СПИСОК патентов США - подгруппа МПК16 H04N1/405


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2017

19609178Color image processing device
29609171Applying luminance conversion processing in accordance with image attribute information to improve edge detection and image data correction for pseudo halftone processing
39609169Interactive decor
49594989Image-processing device determining dot formation state of target pixel by using gradation value of target pixel
59592689Image processing apparatus, image processing method, and storage medium
69588472Image formation apparatus and image formation method
79584784Systems and methods for light field modeling techniques for multi-modulation displays
89584699Image processing apparatus, image processing method and computer-readable storage medium with improved character display
99584698Printing device for providing multiple documents of one type
109578207Systems and methods for selectively screening image data
119578205Method and system for forming a halftone screen
129571695Image processing device adapting halftone process to plural printing modes with different resolution and dot arrangement
139569706Image processing apparatus, image processing method and program
149565338Image processing apparatus, method, and medium to perform image smoothing and brightness correction to remove show through
159565337Computing array of high-resolution halftone pixel values by addressing halftone dot function and averaging values to determine value at printer resolution
169560239Method and apparatus for generating dots in image reproduction
179544471Print control apparatus, print control method, and print control program
189544467Halftone data-bearing encoding system and halftone data-bearing decoding system
199538042Image processing device calibrating value related to halftone process for determining dot formation state

2016

209531914Color changing effects with cross-halftone prints on metal
219521296Inverse halftoning using inverse projection of predicted errors for multi-bit images
229513852Print instruction device, printing system, non-transitory computer readable medium, and print instruction method for increasing quality of a photographic image and read accuracy of a code image
239509885Method for performing dither processing
249503611Image forming apparatus, and method and device for creating dither patterns
259500976Method of manufacturing thermal transfer print sheet, image forming apparatus, and method for same
269497353Image processing apparatus, image processing method, and image processing system
279496519Encapsulation of components of electronic device using halftoning to control thickness
289489602Image forming apparatus and method of forming images
299485388Image processing apparatus, method, and computer storage medium configured for line correction based on a number of linked dots
309479676Printer and program
319473676Image processing apparatus
329469100Printing control device, printing control method, and printing control program
339463638System and method for inoperative inkjet compensation
349462159Image processing device, method and inkjet recording device
359462155Method, device, and program product for dot area extraction based on periodicity of different numbers on pixels in crossing directions
369457585Print apparatus, print method, and serial printer
379456108Image processing apparatus
389454721Document copy with data-bearing halftone image
399454720Method and system for halftone printing
409444969System and method for producing color shifting or gloss effect and recording medium with color shifting or gloss effect
419424499Method for printing a grayscale raster image by grayscale value dispersion
429421803Image processor and image processing method
439411292Image forming apparatus, image forming method, and computer-readable recording medium
449411256Image forming apparatus, image forming method, and method of producing printed material for generating a parallel line dither pattern of uniform concentration
459407788Threshold value data setting device, method and program, and image forming system
469406005Gamma correction table generation method, image processing device using the gamma correction table and control program thereof
479400948Image processing for rendering an indexed color image
489396418Information processing apparatus, information processing method, and storage medium for processing an image and a pattern included in an XOR-and-XOR rendering command set
499392139Method for printing a colour pixel matrix on a physical medium by printing oblique lines and associated control device
509390460System and method for dynamic generation of embedded security features in a document
519387685Image formation device, method, program, and formed image
529384431Image processing apparatus, method, and storage medium that perform quantizing processing of image data for at least N colors
539373032Forensic verification utilizing forensic markings inside halftones
549369610Image processing apparatus and image processing method
559369609Information processing apparatus E.G. printing apparatus to print image based on data to be printed, determines parameter to be used based on degree of compression when error diffusion processing is performed on expanded image data
569369608Printing methods and apparatus
579363416Digital image attribute plane compression
589363415Printing apparatus, printing data generation apparatus and method therefor, and printing data generation program
599363414Halftone mechanism
609361559Image processing device and method, program, and image forming device
619361557Image processing apparatus and control method for performing screen processing
629361514Forensic verification from halftone images
639349083Image halftone processing by dithering or error diffusion based on pixel value or times of printing
649344600Encoding method for generating a data-bearing halftone image, and decoding method for decoding the data-bearing image
659338324Systems and methods for rule-based thin-line enhancement in halftone images
669336473Virtual ink channels
679332155Digital image halftone conversion with selective enhancement
689319557System and method for producing color shifting or gloss effect and recording medium with color shifting or gloss effect
699313365Image processing apparatus, image processing method, and image recording apparatus
709305251Image processing apparatus and computer readable storage medium stored with control program of image processing apparatus
719300844Information processing apparatus, information processing method, and storage medium
729300842Gated edge enhancement using orthogonal rational counters
739298122Image forming apparatus, image forming method, and method of producing printed material for generating a parallel line pattern of uniform concentration
749292777Information processing apparatus, information processing method, and storage medium
759292773Image display apparatus, printing system, and program configured to print image projected by the image display apparatus
769286554System and method for halftone printing in a three-dimensional object printer
779282217Generating data to control the ejection of ink drops
789277099Information processing apparatus, information processing method, and storage medium
799277095Distribution evaluation apparatus and method, distribution determining apparatus and method, image processing apparatus and method, and computer readable medium
809277091Embedding information in paper forms
819275316Method, apparatus and system for generating an attribute map for processing an image
829268252Image forming apparatus and method with additional exposure of photoreceptor drum based on cycle of screen
839264578Image processing apparatus, image processing method and computer readable recording medium storing program
849258457Gamma correction table generation method or image processing method using gamma correction table and control method thereof
859257094Projection display device, projection display method, and computer program
869253369Halftone dot addition apparatus that reduces white void and break at edge portion of image
879253368Image processing device setting binary value without using dither matrix when prescribed condition is satisfied
889251732Method and system for image dithering
899251447Image formation apparatus and method of forming image
909248682Methods of producing articles having three-dimensional topography
919247104Printing apparatus, printing method, program, and image processing apparatus
929247090Printing and printers
939237254Image processing apparatus and image processing method for forming a high-quality image by controlling superimposition of dots to be printed in multi-pass printing
949237253System and method for producing color shifting or gloss effect and recording medium with color shifting or gloss effect
959235791Image processing apparatus
969235789Image processing apparatus, image processing method, and non-transitory computer readable medium
979232109Image processing apparatus and image processing method specifying a type of original based on whether a high frequency component is included in an acquired spatial frequency feature including a feature of fiber of an original
989230196Reuse of binary bitmaps generated for images in a print job
999227424System and method for missing ejector correction for half-toned images in three-dimensional object printing by adding drops in other layers

2015

1009215345Method and system for inverse halftoning utilizing inverse projection of predicted errors
1019208418Method and system for forming a halftone screen
1029208416Image processing apparatus performing halftone process on image data based on a corrected tone value and an error value of target pixels
1039202151Printing apparatus, control method thereof, control program thereof, and manufacturing method of printing material
1049195917Dither pattern forming method and dither pattern
1059191683Image coding method, image coding apparatus, image decoding method and image decoding apparatus
1069189716Generating a threshold matrix to be compared with an original image for performing halftoning of the original image
1079189714Apparatus and method for enlarging object included in image data, and storage medium therefor
1089185266Method of creating an ICC profile for a printing system
1099185264Print control device capable of generating image data using plurality of error matrices
1109182661Screening method and apparatus for use in intaglio printing
1119179039Methods and systems for processing low resolution images via error diffusion
1129167130AM-FM halftone screen design
1139167129Method and apparatus for segmenting image into halftone and non-halftone regions
1149160887Printing medium, information processing method, information processing device
1159160886Image processing apparatus and method for controlling the same
1169153005Method and system for authenticating a secure document
1179152897Printing an image on a substrate
1189148547Printing apparatus, printing method, and image processing apparatus
1199147262Methods and systems for image processing
1209147141Printer sample feature set
1219147140Image processing apparatus, method, and product for converting image data into fewer gradations based on total value of pixels in a group except for a detected pixel having a specific value
1229146514Image forming apparatus and image forming method for correcting registration deviation
1239137422Image processing in contone space and halftone space
1249137416Controlling device
1259135536Image processing apparatus and image processing method generating binary data specifying dot arrangement in a unit area of a print medium
1269132632Printing device and printing method
1279132630Image processing apparatus and image processing method
1289131182Image processing apparatus, method and storage medium
1299126403Inkjet printing apparatus
1309124842Image data generation method, image recording method, image data generation apparatus, and image recording apparatus
1319124841Connected component analysis with multi-thresholding to segment halftones
1329124819Watermark and manufacturing method therefor
1339122977Image processing apparatus and image processing method
1349118862Image processing device having improved quality of its printed images
1359117163Printing apparatus and method configured for re-halftone image data
1369117162Image processing that generates and density corrects ink amount data
1379114610Image processing device
1389113104Image processing apparatus and image processing method to perform screen processing for image data
1399111206Method and apparatus for storing image data in a memory of an image deposition device
1409111200Image forming apparatus combining stamp image with original image
1419106865Multi-bit error diffusion
1429106864Multi-bit error diffusion
1439106863Image processing apparatus and control method thereof
1449105226Spatio-temporal error diffusion for imaging devices
1459104132Apparatus to form latent image using dither matrices having minute and normal exposure areas controlling toner adhesion
1469094644Screen printing techniques
1479094621Document management
1489094542Printing controller, printing control method, and printing control program
1499092720Generating and using blue noise dither patterns with high value thresholds positioned for a high dot concentration ratio
1509092717Data processing device and data processing method
1519087291Image processing apparatus and method setting thresholds of dither patterns based on density range and generating binary data depending on thresholds of target pixels
1529087288Method of generating void pantographs
1539083925Image processing apparatus and method therefor
1549083912Method and apparatus for enabling parallel processing of pixels in an image
1559082161Image processing apparatus, image processing method, and non-transitory computer readable medium
1569079417Color mixing checking method for inkjet print head and printing apparatus
1579076089Image processing apparatus and method for printing according to a dot-arrangement matrix
1589075548Printing control device, image forming apparatus, and image forming method
1599066037Threshold matrix generation device and method for generating threshold matrix for generating threshold matrix of predetermined size used for halftone processing of multitone image data using dithering method
1609053410Raster image processor with printhead profile compensation for a multi level digital printing machine
1619039113Printing apparatus and printing method
1629036213Method for semi-correlated halftoning
1639036212Halftone screen generation mechanism
1649030713Data processing apparatus and data processing method
1659019570Systems and methods for computationally distinguishing handwritten pencil marks from preprinted marks in a scanned document
1669019564Image processing apparatus, image processing method, and computer-readable medium
1679013756Blended halftone with mixed dot sizes for object oriented halftones
1689007659Re-ordered error diffusion for fast implementation
1699001379Image forming apparatus and image forming method thereof
1708995023Amplification modulation screening method and apparatus
1718995022Ink-based layer fabrication using halftoning to control thickness
1728988734Image processing apparatus and control method configured to complement a recording amount assigned to defective nozzles
1738988730Image forming apparatus and control method thereof
1748982419Method and apparatus for generating a halftone image from a continuous tone image
1758982417Image processing apparatus that prevents an occurrence of contouring, non-transitory computer-readable recording medium storing an image processing program, and image processing method
1768970911Image processing apparatus
1778970910Visible and invisible watermarking of printed images via 2.sup.nd generation stochastic seed frequency modulation
1788970909Image forming apparatus
1798958653Image coding method, image coding apparatus, image decoding method and image decoding apparatus
1808958129Forming image on media using screening tile with thresholds determined by displacing center of each cell spot function accoring to displacement vector and dither curve
1818958081Spot color control method, apparatus and system
1828953234Image processing apparatus, image processing method, and printer
1838953223Image processing apparatus for processing multi-values image data corresponding to a predetermined area of a recording medium
1848947737Image processing that generates and density corrects ink amount data
1858947736Method for binarizing scanned document images containing gray or light colored text printed with halftone pattern
1868947717Print data processing apparatus
1878941901Electrophotographic image output device
1888941887Image processing apparatus and image processing method to generate halftone image data based on prediction of density corresponding to resolution of image to be printed
1898941884Method and apparatus for dynamically generating a stochastic threshold table
1908937750Inter-block data management
1918934156Image processing apparatus, image processing method, program, and recording medium
1928934142Halftone screen
1938934131Controlling device
1948928944Document assembly and automated contextual form generation
1958928898Image forming apparatus includes a transport guide member and a detection mechanism

2014

1968923634Image coding method, image coding apparatus, image decoding method and image decoding apparatus
1978922835Color conversion method and color conversion system
1988917426Image processing method
1998917425Image processing apparatus for executing halftone processing, image processing system, image processing method, program product, and computer-readable storage medium
2008917424Screen printing techniques
2018913296Dither matrix creating device
2028913295Printing control device and image formation system
2038913077Image processing apparatus and image processing method
2048907955Vector image drawing device, vector image drawing method, and recording medium
2058902470Image processing apparatus, image forming system, image processing method and non-transitory computer readable medium
2068896884Image processing apparatus, printing apparatus, and image processing method
2078896883Image processing apparatus, printing apparatus, and image processing method
2088885219Printing system color validation swatch methods and systems
2098879122Image processing in contone space and halftone space
2108879113Image forming apparatus forming images in accordance with image forming conditions
2118873105Color monitoring method for printing presses
2128872841Generating and merging two halftoned images
2138867100Image quantization for digital printing
2148861035Threshold matrix diffusion halftoning
2158861033Printing system
2168848253Threshold matrix generation method, image data generation method, image data generation apparatus, image recording apparatus, and threshold matrix
2178848252Control device capable of generating binary image data expressing suitable gradation levels
2188848250Compression of halftoned digital images
2198848249Creating an image to be printed using halftone blending
2208848246Image data generation method, image recording method, image data generation apparatus, and image recording apparatus
2218848245Printing apparatus, method of generating color conversion table, and computer program
2228848233Method for reducing image quality artifacts in three-dimensional printing
2238842341Rescreeining selected parts of a halftone image
2248842340Printing system and program for executing halftone processing on representative values assigned to pixel group
2258837001Image forming apparatus and gradation correction method for the same
2268836982Image display apparatus, printing system, and program configured to print image projected by the image display apparatus
2278833663Image processing techniques for printing identification cards and documents
2288830531Intelligent halftone mechanism
2298824016Image processing device capable of suppressing deformation of printing medium
2308824015Image processing apparatus, image processing method, and storage medium
2318824014System and method for adjustment of coverage parameters for different colors in image data
2328824013Error diffusion halftoning method for dark ink and light ink channels, based on a measure of solvent quantity that should be ejected for each pixel, and apparatus that performs the halftoning method
2338823961Display processing apparatus, image forming system, and computer-readable storage medium
2348817331Transcoding run length limited datastreams for object level halftoning
2358817330Method for adjusting quality of a pantograph background pattern
2368810856Image processing device executing halftone process by using determined parameter based on potential for banding
2378804198Printing data generating apparatus, printing data generating method, and printing data generating program
2388804197Print quality control method
2398804190Image processing method, image processing program, and information processing apparatus
2408797615Image forming apparatus
2418797591Apparatus, system, and method of forming image using inkjet printing, and recording medium storing inkjet printing control program
2428792136Processing condition selecting apparatus, processing condition selecting method, and storage medium
2438792130Image processing apparatus for carrying out enlargement/reduction of image and image processing method for the same
2448786908Image forming apparatus, method of controlling drawing processing, and recording medium storing drawing processing control program
2458786906Image processing apparatus and image processing method
2468786896Image processing method and image processing apparatus for reducing the bad effects of seam lines that appear at the boundary portions for each printing scan in a serial type printer
2478786894Image processing apparatus
2488773720Image processing using halftone image data
2498767265Image processing apparatus and processing method of the image processing apparatus
2508767264Printing device and printing method
2518760725Tone dependent threshold perturbation error diffusion halftone
2528755088System for halftone screen production
2538755087Print apparatus which performs screen processing based on input gradation data
2548755086Image forming apparatus and control method thereof which execute auto color registration
2558749848Methods and apparatus for halftoning continuous-tone images
2568749847Image processing apparatus, image processing method and storage medium
2578743436Color information processing apparatus and recording medium
2588743423Image forming apparatus and method of producing threshold value matrix
2598743420Image processor and image processing method
2608736907Image processing apparatus, control method, and computer program product capable of minimizing cross-linkage between line screens
2618736865Image processing apparatus and image processing method that can print an image in which a pattern or sweeping phenomenon specific to the error diffusion process does not appear
2628730526Printing control device, image forming apparatus, and image forming method
2638730525Method and device for proofing raster print data while maintaining the raster information
2648730523Image processing apparatus and image processing method
2658724175Halftone correction device and method, and image forming apparatus using the halftone correction device and method
2668724172Image processing apparatus, image processing method, and storage medium capable of realizing high speed generation processing of bitmap image data without increasing the load of object combining processing
2678717631Image processing apparatus and method for controlling the image processing apparatus
2688717629Image-processing device
2698711436Tint block image generation program and tint block image generation device
2708705137Apparatus that performs calibration for maintaining image quality
2718705133High dynamic range display systems
2728699087Image generating apparatus, image processing apparatus, image forming apparatus, and recording medium
2738699081Halftoning run length encoded datastreams
2748693057Quantization using dither matrix noise based on noise use rate and accumulated error based on error use rate
27586813832.sup.nd generation dot-off-dot stochastic halftone
2768681382Threshold matrix diffusion halftoning
2778681381Pixel stacking avoidance error diffusion halftone
2788670625Image coding method, image coding apparatus, image decoding method and image decoding apparatus
2798665498Method and system for automatically detecting and processing halftone regions in scanned documents
2808659792Image processing apparatus and image processing method
2818654401Generating 1-bit image data from multiple-bit image data for producing when printed a dot image with reduced graininess and patterning by freeing image of blocks of adjacent dots with densities below a threshold
2828654400Generating 1-bit image data from multiple-bit image data for producing when printed a dot image with reduced dot gain and appearance of patterning caused by isolated diagonally adjacent pixels
2838649062Image processor
2848649061Laser print apparatus with dual halftones
2858649059Mutual optimization system for class matrix and diffusion weighting used in halftone image processing technique
2868649053Printing relief plate producing apparatus, system, method, and recording medium
2878638475Recreating step and repeat geometrical data
2888625164Image forming apparatus and method, computer program, and recording medium using density signal and look-up table
2898625162Image processing apparatus and image forming apparatus with a toner density correction function
2908625161Multibit digital halftoning, indexing 2D and 3D lookup tables
2918625156Image forming apparatus and control method thereof

2013

2928619329Print smoothness on clear toner enabled systems
2938619328Image processing apparatus and image processing method
2948619274Image processing apparatus for correcting density unevenness
2958614834Method of generating patterns representing a halftone image
2968614832Dynamic image dithering
2978614830Pixel exposure as a function of subpixels
2988610962Screen design for process variation artifact reduction
2998610958Synthesis of authenticable color multi-halftone images
3008610957Image processing apparatus, image processing method, and non-transitory computer-readable medium
3018610956Halftone dot formation method and apparatus, and image forming apparatus
3028599403Full depth map acquisition
3038593709Color profile selection
3048587815Display method for drivers installed in an information processing apparatus, which is directly or indirectly connected to an image forming apparatus through a communication line such as a network in a printing system
3058582997Image forming apparatus
3068576456Secondary scan to ensure transient document erasure
3078576451Versatile moire-free halftone geometry that uses frequency vector shearing
3088576449Parametrically controlled halftone spot function for an irregular halftone grid
3098576448Clustered halftone generation
3108576447Error diffusion halftoning with bandpass noise shaping
3118576446Deblurring and supervised adaptive thresholding for print-and-scan document image evaluation
3128576267Optical writing device, image forming apparatus, optical writing method, and computer-readable recording medium
3138570604Printer and method for printing of overlapping swathes
3148564840Halftone tiling and halftoning for annular rasters
3158564839Electrophotographic image forming apparatus that selects a screen from a plurality of screens based on distance between toner adhesion or non-adhesion regions
3168559080Image forming apparatus and computer readable medium for image forming
3178553287Pseudo-halftoning device, image forming apparatus, and image forming system
3188553286Halftoning method and apparatus using templates indexed by code
3198547598Polygonal-boundary-based halftone method
3208547597Image forming apparatus, control method of image forming apparatus, and computer program product for forming an image comprised of overlapping color and transparent images
3218537423Method and system for enhancing a digital halftone representation for printing
3228520261Controller and halftone dot signal generating method capable of controlling glossiness of image
3238520260Image forming apparatus and image forming method for correcting registration deviation
3248514455Image processing apparatus and method
3258503035Image forming apparatus and image forming system
3268498019Image forming apparatus that emphasizes a boundary between two objects using a halftoning process
3278493627Method for the digital screening of halftone images
3288493626Binarization-use-pattern generating method and printing apparatus
3298493625Determining composite color for dithered object and contone object
3308493624Determination of optimum merge line locations
3318493610Image reading method and image reading apparatus
3328488199Image output inspection system, image inspection apparatus, and computer program product
3338482802Screened hardcopy reproduction apparatus with compensation
3348477377Mechanism for integration of print quality enhancement (PQE) and multi-bit halftone data
3358472081Color screen sets
3368472066Usage maps in image deposition devices
3378467103Moire-free color halftoning methods, apparatus and systems
3388467100Halftoner block employing average values and shifts
3398467099Directional halftone method with enhanced edge and detail rendition
3408467098Automated ink color matching of solids and tones
3418462389Halftone-independent scanner profiling
3428454109Image forming device
3438451503Print quality control method
3448451502Method of halftoning an image
3458451501Watermark decoding via spectral analysis of pixel spacing
3468451500Watermark encoding via pixel spacing modulation
3478451499Multi-level image conversion using error-diffusion with improved speed by processing quadrangular image segments
3488451498Image processing device, image processing method, tone-correction-parameter generation sheet, and storage medium
3498451493Processor, method and program for processing data using a mask pattern with print permission parts arranged at a distance of corresponding integral multiple areas
3508451479Image forming apparatus and preview display method
3518441690Image processing apparatus and image processing method for processing screen-processed image
3528441689Image data creation device, image data creation method and ink-jet system
3538441688Image processing apparatus and method thereof
3548437045Bitmapped based trapping methods, apparatus and system by modifying non-black halftone pixel bitmap plane using estimated continuous tone value
3558437044Method and device for controlling differential gloss and print item produced thereby
3568432581Image processing apparatus and method
3578432580Error diffusion processing method and apparatus
3588432579Image forming apparatus
3598427706Error diffusion halftoning techniques and configurations
3608416458Rotated halftone screen geometry that avoids beat-based banding
3618416256Programmable dithering for video displays
3628411325Method for screening color separations of a lenticular image, computer program product and method for producing a lenticular image on a printing material
3638405882Method and apparatus for secure document printing
3648405878Apparatus and method of forming images
3658405877Laser print apparatus with dual half tones
3668400463Data processing module for generating dithered data and method thereof
3678391624Apparatus and method for quantizing image data
3688390894System and method for inverse halftoning
3698390893Encoding and screening electronic integral images in printing systems
3708390892Spot color printing color conversion program, color conversion device and color conversion method
3718390890Halftone image generation method and image processing system and computer program product thereof
3728384959Threshold matrix generating method, image data generating method, image data generating apparatus, image recording apparatus and recording medium
3738384958Image forming apparatus, density-shift correction method, and computer program product
3748379273Image processing apparatus and image processing method
3758379270Apparatus and method for controlling printing
3768379269Image forming apparatus and image forming method for correcting registration deviation
3778373902Image forming apparatus, image forming method, and program
3788373738Image forming apparatus and image forming method
3798368961Image processing device and method for creating binary image data using a single set of dither matrices
3808368960Image processing apparatus, computer readable medium, and printing apparatus
3818363280System and method of halftone printing of image spot colors using ranked ordered pairing of colorants and halftone screens
3828355179Multi-tonal copy evident document methods and products
3838351085Moire-free color halftoning methods, apparatus and systems
3848345311Reduction of harmonic artifacts in halftone screens
3858345310Halftone frequency determination method and printing apparatus

2012

3868339674Halftone independent correction of spatial non-uniformities
3878330970Image processing device, image processing method, and recording medium
3888325387Method and apparatus for dithering a pixel value in image
3898320694Surround error diffusion
3908320024Method and apparatus for image forming and computer program product
3918314971Apparatus and method for image processing
3928314970Image processing apparatus, image processing method, image forming apparatus, image forming method, and recorded material
3938305642Method and system for correlating of uniformity compensations across halftone screens
3948305634Image processing device, image recording system, image processing method and computer-readable medium
3958300275Method for reducing the area coverage of a printing plate
3968294952Memory efficient hierarchical error diffusion with color consistency constraints
3978294949Color reproduction sharing method and computer-readable program for carrying out such color reproduction sharing method
3988289568Printing using variable pixel-replication factors
3998284455Visual uniformity adjustment procedure using areas of different screen geometries and frequencies
4008279246Display control apparatus for enhancing the visibility of displayed information
4018253981Formation of a color image by using a plurality of color component materials
4028253979Method of processing neutral gray color print jobs as monochrome black during billing detection and printing as a neutral gray composite black
4038253978Image processing apparatus and image forming apparatus
4048253974Image forming apparatus, image processing apparatus, and control method therefor
4058253949Document color and shades of gray optimization using dithered monochrome surfaces
4068248662Image forming apparatus and method thereof
4078248659Image processing apparatus, image processing method, image forming apparatus, program, and recording medium
4088243335Device for changing screen ruling for image formation in accordance with relationship between luminance and saturation
4098243332Printing structure of medium surface on which dot pattern is formed by printing, printing method, and its reading method
4108243325Method for prepress-time color match verification and correction
4118237989Method to improve a halftone by combining halftoning with algorithmic processing
4128237984Processor, method, and program for processing data using a mask pattern with print permission parts arranged at a distance of corresponding integral multiple areas
4138233196Halftoner block employing average values and shifts
4148228562Image processing apparatus
4158213056Image processing apparatus and line pair pattern identification method
4168213055Color separation into Neugebauer primary area coverage vectors
4178213052Digital image brightness adjustment using range information
4188203760Vector halftoning in an image path utilizing sub-sampled cross-channel image values
4198199368Image data correcting apparatus, computer-readable image data correcting program storage medium, image data correcting method and printing system
4208199365Image forming apparatus and image forming method
4218199364Image processing apparatus, and image forming apparatus
4228194287Apparatus and method to revise halftoned image and image forming apparatus using the same
4238184339Data generation and printing with binarization pattern selected as function of pixel number corresponding to conveying amount of print medium
4248179401Reducing image artifacts in a color sequential display system
4258174733Tint block image generation program and tint block image generation device
4268169667Performing halftoning by plurality of halftoning mechanisms
4278164799Digitally printed color anti-copy document in any resolution and processes and products therefor
4288164795Device, method, and computer program product for creating print data
4298162431System and method for detecting weak and missing ink jets in an ink jet printer
4308149464Clustered dot-screen design method, a device to perform the clustered dot-screen design method based on human vision and printer model characteristics, and an image-forming apparatus to output binary images on a designed screen
4318149463Information processing apparatus, image processing apparatus and method thereof, which create and use a halftone screen
4328149462Line printer
4338149454Color printing
4348144179Image forming apparatus and control method thereof
4358139270Variable data periodic line patterns for composing a font system
4368134750Printing with alternative halftone patterns in ink jet printing to reduce ink penetration
4378134749Multi-bit-depth error diffusion for the reproduction of color or monochrome images
4388134745Image processing apparatus including compensation unit performing compensation in a printing direction and image processing method performing compensation in a printing direction thereof
4398132508Method of controlling ink film thickness on a printing plate
4408130410Image processing method, image processing apparatus, image forming system and recording medium readable by a computer
4418115966Method of embedding a plurality of different two-dimensional codes in an image
4428111429Apparatus and method for dithering for multi-toning
4438111428Halftone image generation method, threshold matrix generation method, threshold matrix, printing plate manufacturing method, and printing plate
4448111425Image processing method and image forming device
4458107129Methods and apparatus for embedding and detecting digital watermarks in a text document
4468102567Image forming apparatus and method calculating a deviation between a) a representative point of threshold information I) nearest to the coordinate of a pixel of interest or II) in dither space nearest to the address coordinate of the pixel of interest in dither space, and b) the address coordinate in dither space corresponding to a pixel coordinate of an integer in pixel space or a pixel coordinate of an integer in pixel space nearest to the representative point
4478098406Image forming apparatus capable of suppressing color variation due to misregistration of colors, image forming method, and computer-readable medium
4488098405Laser print apparatus with dual halftones
4498098403Color error diffusion with error signal offset
4508098394Image processing circuit and printing apparatus
4518094954Image processing apparatus, image processing method and image processing program that performs a level conversion on multilevel input image data

2011

4528085438Printing color images visible under UV light on security documents and valuable articles
4538077356Content-aware halftone image resizing using iterative determination of energy metrics
4548072648Halftone independent correction of spatial non-uniformities
4558068253Recording apparatus
4568064103Information processing apparatus and method
4578064098Device optimizing boundary value table for halftoning reference to correct gradation characteristic based on condition of liquid ejecting head
4588063994Image processing device, image processing method, program, recording medium and integrated circuit
4598059135Image output apparatus, image output method and image output program product
4608049932Image forming apparatus and image density control method therefor
4618049929Color management of halftoned images
4628045232Image display medium, method and system for preparing composite image display data
4638035860Method for processing FM-AM mixed halftone images on a multi-bit depth imaging apparatus
4648031373Method for adaptively screening a continuous tone original and device for carrying out said method
4658031372System and method for distributing image values of a color separation
4668027066Methods, systems, and media to enhance image processing in a color reprographic system
4678023160Encoding message data in a cover contone image via halftone dot orientation
4688023154Image output system for outputting image based on information of number of dots to be formed in predetermined area
4698023153Content-aware halftone image resizing
4708023152Method for frequency-modulation screening using error diffusion based on dual-feedback
4718023151High-image-quality halftone process
4728023150Method and system for improved copy quality by generating contone value based on pixel pattern and image context type around pixel of interest
4738023144Method for generating transposed image data
4748019182Digital image modification using pyramid vignettes
4758018624Methods, systems, and media to enhance image processing in a color reprographic system
4768018621Data generation and printing with binarization pattern selected as function of pixel number corresponding to conveying amount of print medium
4778014036Methods and apparatus for watermarking digitally printed documents
4788014035Decoding message data embedded in an image print via halftone dot orientation
4798014032Electrophotographic image forming apparatus and halftoning correction method thereof
4808009329Fluorescence-based correlation mark for enhanced security in printed documents
4818004720Method for adaptively screening continuous tone originals
4828004717Stack flipping document handling system for utilization with printing lazy-portrait formatted documents
4837995247Embedding computer information into printed media and process method thereof
4847995244Halftoner block employing average values and shifts
4857990592Methods and systems to produce consistent spot colors for multi-color print engines
4867986442Apparatus and method to generate a halftoning screen and image forming apparatus for same
4877986441Embedding watermark into halftone image with low distortion using parity values for overlapping groups of candidate sites
4887982916Color error diffusion with error signal offset
4897982915Inkjet recording apparatus, image processing method, storage medium, pigmented ink, and recorded matter
4907982913Image processing apparatus and image processing method for suppressing jaggies in the edge portions of image
4917978372Printhead driven by multiple print engine controllers
4927973974Method, apparatus and article of manufacture for modifying printing based upon direct on-the-fly media characteristic parameters
4937969617Multilevel screening mapping tone values to control signal values for greater color or shade fidelity and reduced print aberrations
4947969616Systems and methods for efficient print job compression
4957965418Image processing apparatus and image processing method
4967965413Method and system for detection of binary halftone frequencies
4977957031High-image-quality halftone process
4987948659Halftoning device and halftoning method and laser printer including the same
4997948652Processor, method, and program for processing data using a mask pattern to print dots in each area in a non-periodic arrangement by using an integral multiple of the areas
5007940427Image processing apparatus, printing apparatus and image processing method
5017929183Image output control system, image processing device, and image processing method
5027929156Technique for image data recording
5037925074Adaptive background propagation method and device therefor
5047924467Image forming apparatus
5057924465Dither matrix, image processing method, storage medium, image processing apparatus, image forming apparatus, and image forming system
5067924464High-image-quality halftone process
5077920294Data processing method, data processing apparatus, method for generating dither pattern, and dither pattern
5087920293System and method for patterned encoded halftoning
5097916351Image processing apparatus and method, printer device, and computer readable recording medium
5107916350Minimizing visual artifacts in a brick-layer halftone structure
5117911651Method for screening an image
5127898693Fast generation of dither matrix
5137884965Image-forming device
5147881545Image data compression method and image data compression device
5157880934Methods and apparatus for watermarking digitally printed documents
5167876473Apparatus and method for information burying
5177869095System and method to perturb error diffusion patterns
5187869094Selective dithering
5197869085Memory controller, memory control method, rate conversion apparatus, rate conversion method, image-signal-processing apparatus, image-signal-processing method, and program for executing each of those methods
5207864387Color reproduction error minimization method and device

2010

5217847980Image processing apparatus and image processing method
5227843608Image processing apparatus capable of preventing pseudo coutour
5237843607Method for processing digital image data
5247843598Image processing method and apparatus, and image recording apparatus
5257839537Method and apparatus for multi-color printing using a rosette or diamond halftone screen for one or more of the colors
5267835035Intelligent toner saving for color printing
5277830569Multilevel halftone screen and sets thereof
5287830554Fiducial artifact detection and compensation algorithm
5297830553Image output system for outputting image based on information of number of dots to be formed in predetermined area
5307830401Information processing apparatus
5317826099Variable-dot halftoning
5327826097Asymmetrical digital filters for dot gain adjustments
5337817306Method of page expansion and printing with a pagewidth printer having low-speed and high-speed firing modes
5347817297Image processing apparatus and image processing method
5357813008System and method for improving an appearance of a raster image comprising glyph shapes
5367813006Enhancement of glossmark images at low and high densities with selective application of clear toner
5377813001Color image processing method, color image processor and storage medium
5387809201Image processing apparatus, image processing method and image processing program that performs a level conversion on multilevel input image data
5397800785Methodology for substrate fluorescent non-overlapping dot design patterns for embedding information in printed documents
5407796300High-speed printing method having parallel processes
5417791766Image processing apparatus and image processing method
5427787154Font printing system having embedded security information comprising variable data periodic line patterns
5437782493Method of generating threshold matrix for creating halftone dot image and method and apparatus for creating halftone dot image and recording medium
5447773265Image correction apparatus and image correction method
5457764402Fast generation of dither matrix
5467760399Method and system for encoding color images to black-and-white bitmaps and decoding color images
5477751088High-image-quality halftone process
5487751084Image processing apparatus, image processing method, and program
5497748813Print apparatus, print method and recording medium driving apparatus
5507746502Dither matrix producing method and apparatus, image processing method and apparatus, image forming method and apparatus, program and recording medium
5517746501Method and device for compressing image data
5527738149System and method for managing electronic transmission of color data
5537733534Image processing method, image processing apparatus, image forming apparatus, and recording medium
5547733532Laser print apparatus with dual halftones
5557729015Methods and apparatuses for controlling print density
5567724395Dot arrangement determination method, program and apparatus, threshold matrix creating method and program, and image forming apparatus
5577724394Image forming apparatus and image forming method using pseudo half tone processing with different resolutions
5587719722System and method of halftoning for multi-pass rendering
5597719721Information processing method and information processing apparatus
5607719719Sharpening a halftoned image
5617719718Threshold modification for limit cycle removal in vector error diffusion
5627715053Halftone process giving specified characteristics to particular dot patterns, and generating and evaluating a dither matrix therefor
5637715051Image forming apparatus and method for forming an image according to image drawing data
5647710605Print system and printer
5657710603Image forming apparatus and image forming method
5667706021Image processing apparatus and image processing method for suppressing jaggies in the edge portions of image
5677701613Image forming apparatus with random number generator
5687701612Image processing method, program and apparatus having plural halftoning methods including error diffusion using a larger number of bits
5697701610Image processing apparatus capable of printing with substitute recording agent and image processing method
5707697168Image processing apparatus and method for generating bitmap data and attribute information from a raster data
5717693346Tally image generating method, decoding method, tally image generator, and decoder
5727689058Conversion of a sub-pixel format data to another sub-pixel data format
5737676083Moving image conversion device, method and program, moving image distribution device, and e-mail relay device
5747672018Image generation such that halftone colors are expressed with dither patterns selected based on densities of gross areas of dots
5757669953High-image-quality halftone process
5767667875Textured HT screens for improved uniformity appearance
5777660016Image-processing apparatus, an image-forming apparatus, and a program
5787656559System and method for generating a signed hardcopy document and authentication thereof
5797656558Image processing system, image processing device, image output device, and method and program product therefor
5807656557Tools to embed tampering indicator into digital visual works using two screens with halftoning elements of different size dots or shapes
5817652793Image processing method and image processing apparatus, and image forming apparatus comprising image processing apparatus
5827649649Determining the color match between image data and graphics objects
5837646513Image processing device and method thereof
5847646508Method and apparatus for processing digital images
5857643179Image forming apparatus and image forming method

2009

5867639887Error diffusion-based image processing
5877639399Image processing method
5887636179Image quantization processing with error diffusion using oscillating quantization threshold to develop dots that spiral outward
5897633650Apparatus and method for processing binary image produced by error diffusion according to character or line drawing detection
5907626741Image processing method and apparatus thereof
5917626731Dot analysis device, dot analysis program storage medium, and dot analysis method
5927626730Method of making a multilevel halftone screen
5937626729Halftoning with color error diffusion of one separation based on color error diffusion of a previous separation
5947623270Method of processing a digital image by means of ordered dithering technique description
5957623268Replacement halftoning
5967619779Method for judging achievability of density correction of image and printing apparatus
5977619777Method of generating halftone screen and system thereof
5987619776Method to produce a hardcopy output of an image formed at least in part by perforations
5997616347System and method for multi-bit halftoning
6007612917Printing method, device, and program, computer-readable recording medium, printing device control program and method, and printing data generation device, program, and method
6017612916Image processing device, image processing method, and computer program
6027605949Image processing apparatus and image processing method adapted to correct color unevenness
6037602531Halftone edge enhancement for production by an image forming device
6047602530Creating high spatial frequency halftone screens with increased numbers of printable density levels
6057602529Method and system for controlling printer text/line art and halftone independently
6067595910Method for making a dot for dot proof
6077593135Digital image multitoning method
6087589868Method and apparatus for creating 3D-prints and a 3-D printing system
6097589865Variable differential gloss font image data
6107586649Method and device for compressing image data
6117586648Variable-dot halftoning
6127580155Tools to embed information into digital visual works
6137580154Printing plates containing ink cells in both solid and halftone areas
6147580153Printed visible fonts with attendant background
6157570390Image processing device and method
6167565027Countdown stamp error diffusion
6177564591Image processing apparatus and image processing method
6187564590Image processing apparatus and method
6197564589Color error diffusion with error signal offsets
6207561307Image processing method and device using dither matrixes with size and density being inversely related to a unit images distance to the center of the dither matrix
6217561303Caching and optimisation of compositing
6227557962System and method for tone-dependent multi-frequency halftone screening
6237557961Method for setting boundary value, image signal processing method and apparatus, and printing apparatus
6247554699Method of watermark with hybrid halftone dots
6257554697Image forming apparatus, image forming method, and image forming program
6267551324Print engine controller for driving a printhead
6277548347Image printing apparatus and image printing method
6287548346Image processing apparatus and method for performing error diffusion based on density values of different color components
6297545537Bandless halftone design for multiple beam printers employing non-orthogonal halftones
6307542169Halftone image processing using a dither matrix with a consecutive order and shifted from an adjoining block in a main scan direction
6317538918Toner image forming apparatus including gradation control
6327538909Defective nozzle compensation
6337532365Threshold matrix generation method, threshold matrix generation apparatus, and recording medium
6347532364Image processing device, image output apparatus, and storage medium storing image processing program
6357532363Apparatus and methods for de-screening scanned documents
6367532362Image processing device and dot data generation method
6377532361Image forming system, apparatus, and method
6387528846Systems and methods to adjust a source image aspect ratio to match a different target display aspect ratio
6397522312Threshold matrix, a method of generating the same, and a method of reproducing color image
6407518755Image processing apparatus, image forming apparatus, method for processing image, computer program, and recording medium
6417515305Systems and methods for measuring uniformity in images
6427515303Process for the modeling of dots for a screen
6437511857Halftoning method and system
6447511856Threshold matrix, storage unit for storing threshold matrix as data, and raster image processor incorporating storage unit
6457508549Method and apparatus for multi-color printing using hybrid dot-line halftone composite screens
6467508546Medical image recording apparatus, medical image correcting method and recording media
6477508543Image processor, image processing method, and recording medium on which image processing program is recorded
6487505177Method for generating a threshold value matrix for frequency modulated half-toning
6497505176Image processing apparatus
6507502145Systems and methods for improved line edge quality
6517502140Image processing apparatus
6527499198Threshold value matrix, image processing apparatus, image forming apparatus and printer driver
6537495805Enhancing an image, such as an image having bi-valued pixel values
6547492481Image output device
6557492480System for halftone screen production
6567491424Reproduction of security documents and color images with metallic inks
6577486420Flexographic printing
6587483169Image processing device, image processing method, image creating device, computer software and record medium
6597480079System and method for sequential kernel density approximation through mode propagation
6607477422Image recording apparatus, image recording method, method for controlling the image recording apparatus, storage medium storing a program capable of being read by a computer, and image processing method
6617477421Halftoning system
6627474443Image formation using dots of different spatial density determined based on comparison of pixel value to threshold value matrix and error added by error diffusion
6637474442High performance coprocessor for color error diffusion halftoning
6647474441Image processing device, method, program and recording medium recording the program
6657474316Bit-depth extension of digital displays via the use of models of the impulse response of the visual system

2008

6667471422Computer program and method for generating a multiple-bit image data file from a 1-bit image data file
6677471421Method of generating threshold matrix and recording medium storing data of threshold matrix
6687466465Load allocation when executing image processing using parallel processing
6697463387Multilevel value output device
6707460285Load allocation when executing image processing using parallel processing
6717460277System and method for halftoning using a time-variable halftone pattern
6727460276Systems and methods for rank-order error diffusion image processing
6737460275Odd/even error diffusion filter
6747460272Image processing apparatus, image processing method, and image processing program
6757457004Halftone dot formation method, halftone dot formation apparatus, threshold matrix generation method used therefor and halftone dot recording medium
6767457001Half-toner compositor for use in a print engine/controller
6777450270Image data processing methods, hard imaging devices, and articles of manufacture
6787450269Gray level halftone processing
6797446904Methods and apparatus for generating dither mask through interpolation between preferred patterns
6807443543Image processing apparatus and image processing method
6817443542Method and apparatus for determining error diffusion coefficients
6827443541Image processing apparatus and image processing method
6837440139Systems and methods for controlling a tone reproduction curve using error diffusion
6847436559Load assignment in image processing by parallel processing
6857436550Image processing method, image processing apparatus, image processing program, printer, print instructing terminal, and image processing system
6867433083Halftone-image processing device
6877430064Rotation dependent halftone rendering in scanning
6887429092Method of printing with a personal computer and connected printer
6897420709Dither matrix generation
6907420708Method for processing color image data employing a stamp field
6917417771Error diffusion halftoning system
6927414757Method for compressing printing hint data sent to a printer
6937414756Image processing apparatus for converting image data by unit of multiple pixels and printing apparatus
6947403309Method for producing printed image having 3-dimensional appearance
6957394572Method and apparatus for processing of half-tone image
6967394571Method for multi-color, clustered, dot-off-dot halftoning
6977391537User interface for differential gloss images
6987382495Reduction of differential gloss
6997379210Image processing apparatus, image forming apparatus, and image processing method
7007375855Image processing apparatus for converting image data by unit of multiple pixels
7017369278Image-processing apparatus, image-processing method, image-processing program and image-recording apparatus
7027369277Image processing apparatus, drawing processing method, and computer program
7037369276Multi-level halftoning providing improved texture uniformity
7047369270Print engine/controller and printhead interface chip incorporating the engine/controller
7057365883Dither matrix design using sub-pixel addressability
7067365882Halftone screen frequency and magnitude estimation for digital descreening of documents
7077362473Image processing technique for tone number conversion of image data
7087359091Multi-bit output sampled threshold array halftoner
7097355755Image processing apparatus and method for accurately detecting character edges
7107352493Enhancement of glossmark images at low and high densities
7117352490Method and system for generating contone encoded binary print data streams
7127345792Segmentation-based halftoning
7137345790Method and apparatus for simulating 2 bit-per-pel printing on a bi-level printer using intelligent double dotting
7147345789Image processing apparatus for prepress printing and prepress printing system
7157342689Methods and apparatus for converting full color images to two-color images for printing at a two-color printer
7167339706Error diffusion processing circuit for an image signal which improves an output image
7177336399Document image scanning device that provides image of proper appearance while preserving image density
7187336398Error prediction method for halftone processing
7197333243Calculating error diffusion errors to minimize memory accesses
7207330191System for secure text display
7217315395Image processing apparatus, image processing method, program for implementing the method, and storage medium

2007

7227312901Image processing apparatus, image processing method, and program
7237310168Method and apparatus for controlling a spot function for digital halftoning
7247307761Methods and apparatus for watermarking digitally printed documents
7257304771Apparatus for printing an image
7267304770Reduction of differential gloss with halftoned clear toner
7277301676Printing method and apparatus, and binary-form dither matrix pattern
7287301675Glossmark images with clear toner
7297301674Translation of an input pixel value to an output pixel value
7307301668Printing apparatus with generating means for generating a mask pattern comprising a plurality of planes, control method therefor, and program
7317298528Network point printed matter and printing method
7327295348Processor for image processing, method of processing image using the same, and printer incorporating the same
7337292373Method and apparatus for image processing capable of high speed processing
7347286268Image processing apparatus capable of preventing pseudo contour
7357286266Printer and image processing device for the same
7367280254Method for maintaining uniform spatial frequency over a dataglyph block
7377280252Error diffusion of multiresolutional representations
7387277204Stochastic halftone screening method
7397277203Method of improving start-up behavior for color error diffusion digital half-toning
7407271936Method for printing an image
7417268920Halftone patterns
7427265876PWM rendering for color/gray-scale text and graphics for laser printer
7437265875Halftone super-cell optimization for artifact reduction
7447262885Stochastic halftone screening method
7457262879Method for screening of halftone images
7467253925System and method for performing halftone processing of color and monochrome data
7477251061Resolution enhancement apparatus, systems, and methods
7487251060Image-processing device using quantization threshold values produced according to a dither threshold matrix and arranging dot-on pixels in a plural-pixel field according to the dither threshold matrix
7497245402Flexographic printing
7507239430Binary halftone detection
7517239429Method and apparatus for generating dispersed cluster screen
7527239426Image conversion apparatus, and image conversion program storage medium
7537239421Image data producing apparatus and image data producing program storage medium
7547239420Corresponding lenticular imaging
7557236269System and method for dithering with reduced memory
7567236268Adaptive screening in raster image processing of complex pages
7577227670Method of selective edge softening and rendering for the suppression of halo
7587227669Method of selective edge softening and rendering for the suppression of halo
7597224489Font characteristic driven halftoning
7607224488Method of correcting threshold array, dot pattern data structure, method of correcting pixel layout of image, and method of determining threshold array for generating image
7617221483Image encoding method and apparatus, image decoding method and apparatus, image processing apparatus, image formation apparatus, and computer-executable programs
7627218419Image processing method and apparatus, and recording medium
7637218418Digital de-screening of documents
7647218416Image processing apparatus and method
7657215444Systems and methods for designing zero-shift supercell halftone screens
7667212315Mixed screen design for multi-mode document
7677206099Media/screen look-up-table for color consistency
7687199905Systems and methods for halftoning multiple color separation layers by interlayer error diffusion
7697196822Security document manufacturing method and apparatus using halftone dots that contain microscopic images
7707196821Image processing device, printing control device, image processing method, and recorded medium
7717193751Tag control for runtime glossmarks
7727190490Method for correcting unadjusted threshold arrays for halftoning by use of parameterized transfer functions that generate adjusted threshold arrays at run time
7737190489Method for printing an image in two colors
7747187475System and method for a robust de-screening filter
7757187474System and method for halftoning using a time-variable halftone pattern
7767184177Method, apparatus and article of manufacture for modifying printing based upon direct on-the-fly media characteristic parameters
7777184053Method for processing video data for a display device
7787180636Image processor and method
7797180635Halftone image gloss control for glossmarks
7807173739Pagewidth inkjet printer having composite image printing control
7817170642Image processing apparatus and method for improving output image quality
7827170641Method of generating medium resolution proofs from high resolution image data
7837170639Halftone method and apparatus that provides simultaneous, multiple lines per inch screens
7847170636Image processing apparatus and its control method
7857167278Image processing apparatus, image processing method, program for implementing the method
7867167273Image processing apparatus and method capable of eliminating image contour distortion
7877164504Image processing apparatus, image processing method and computer program product for image processing
7887158264Method of determining threshold array for generating gradation image
7897158263Dynamic generation of linearized halftone matrix

2006

7907151619Image formation apparatus
7917151618Halftone dot producing apparatus and halftone dot producing program storage medium
7927148999Variable glossmark
7937148995Printing adjustment system and method
7947145694Image processing apparatus and method
7957142330Image processing method, image processing apparatus and recording medium
7967139103Screening method and a screening apparatus
7977139101Anisotropic stochastic screen
7987136193Image processing technology performing designated processing on normal orthogonally transformed images
7997133161Rehalftoning of gray halftones with optimal screen frequency for robust suppression of moire
8007130085Half-tone dot elimination method and system thereof
8017130084Electrophotographic apparatus and image processing program
8027130083Image recording apparatus, image recording method, method for controlling the image recording apparatus, storage medium storing a program capable of being read by a computer, and image processing method
8037130081Image processing method, image processing apparatus and recording medium
8047126724Flexographic printing
8057126722Image data conversion method and apparatus
8067126721Protecting printed items intended for public exchange with glossmarks
8077123383Dither pattern for image forming device
8087119928Systems and methods for generating threshold array halftone images with partial pixel position resolution
8097116448Image forming apparatus, image forming system, printer controller, and computer-readable record medium
8107116447Halftone dot-growth technique using a dot edge-detection scheme
8117116446Restoration and enhancement of scanned document images
8127110144System and method of performing halftone gamma correction in a printing environment
8137110141Image processing apparatus and method intensively providing dots in halftone process
8147106964Light amount adjustment method for use in image exposure apparatus
8157102791Mask producing method, image outputting device and computer readable recording medium
8167099046Image processing apparatus and image processing method
8177092128Application of glossmarks for graphics enhancement
8187092124Image processing apparatus, image forming apparatus, and image processing method with judging pixels in halftone-dot areas based on isolated pixel counts
8197088473System and method for effectively implementing a dither matrix for an electronic printer device
8207085017Polar halftone methods for radial printing
8217085016Method and apparatus for dithering and inversely dithering in image processing and computer graphics
8227085014Method, apparatus and article of manufacture using media roughness as a print parameter
8237081972Image processing apparatus and image processing method
8247081901Display system with framestore and stochastic dithering
8257079290Halftoning method and system providing increased number of densities per basic halftone cell for constant input
8267057773Error diffusion using next scanline error impulse response
8277054037Method and apparatus for dithering or undithering data words in a data stream
8287050200Lookup table for adjusting dot-gain on bitmap files based on average number of dots
8297043089Overflow error diffusion
8307034963Method for adjusting edges of grayscale pixel-map images
8317031019Printer control apparatus, printer and printing system
8327027189Image processing apparatus and method
8337016079Method of and apparatus for generating proof image
8347016073Digital halftone with auxiliary pixels
8357009736Tile map based multi-level supercell screening
8367006254Method and system for data hiding and authentication via halftoning and coordinate projection
8376999202Method for generating a halftone of a source image
8386999201Diffusion method using adaptation of diffusion ratio and an apparatus therefor
8396999199Method and system of individualizing tone-reproduction curves calibration and applying thereof
8406995872Reduced-buffer error diffusion
8416985262Method for four-color zero-moire halftoning using non-orthogonal halftone cells
8426983076Control system for digital de-screening of documents

2005

8436963615Pixel modulation apparatus and method thereof
8446956676Methods and systems for providing halftone screens
8456956675Method, processor and program for error diffusion modified with AM-FM sine wave
8466956674Image processor capable of reducing gradation at high speed
8476950207Printer system and image processing method, and computer-readable recording medium with a program for making a computer execute the image processing method recorded therein
8486947173Inkdrop printer with multi-segment printhead
8496943814Gradation display method
8506943808System and method of reducing aliasing in printed images
8516940620Image processing method to reduce moire in image
8526937365Rendering images utilizing adaptive error diffusion
8536934057Image-processing device independently controlling each of functions that correct density of image
8546930801Method of determining threshold arrangement for generating gradation image, and apparatus for generating gradation image data
8556930800Halftone generation system and halftone generation method
8566924910Image forming apparatus and image forming method
8576922262Image processing apparatus
8586921144Drop firing control in multicolor ink jet printheads
8596917446Image processing apparatus and image processing method
8606916078Inkjet proofing with matched color and screen resolution
8616914700Method for reducing migrating residual error in error diffusion halftoning
8626912068Image processor, image processing method, and program product storing proguram for controlling the image processor method
8636900908Method, system, and program for halftoning data for rendering in a multitone output device
8646900907Overlapping drop assignment for multi-level ink jet printing
8656894810Color conversion method using look up tables for compact printer system
8666882444Image drawing apparatus, image drawing method, and computer-readable recording medium recorded with program for making computer execute image drawing method
8676882443Pulse width position modulator and clock skew synchronizer
8686870643Method and system for error diffusion with a plurality of error measures
8696870642Halftoning by enhanced error diffusion
8706870641Image processing apparatus, method of image processing, print control apparatus, and recording media
8716870638Halftone processing apparatus using distributing PWM method
8726863360Method for adjusting dot-gain for a halftone binary bitmap
8736862112System and method for color dither matrix creation using human-vision-system gray matrix with multi-cell replacement
8746853469Method and system for digital printing by density scheduling
8756853467Multistage screening with screens of any desired screen resolutions and screen angles
8766837563Method and device for image processing

2004

8776836346Method and apparatus for image processing, and a computer product
8786833933Stochastic screens for printing
8796831756Image processing method and apparatus for performing halftone conversion
8806829063Method for designing sets of color matrices that tile together
8816828068Binary half tone photomasks and microscopic three-dimensional devices and method of fabricating the same
8826824240Image processing apparatus and method and recording medium
8836816285Digital darker/lighter for halftone images
8846813044Narrow band, anisotropic stochastic halftone patterns and methods of creating and using the same
8856809840Image processing method for adaptively sub-sampling an image
8866804031Method and apparatus for image processing capable of efficiently performing a gray-scale correction
8876801338Image data binary coding method
8886799824Printing with variable dot-recording rate in response to dot size error
8896798541Systems and methods for generating binary clustered, irrational halftone dots
8906798538Halftoning at multiple different resolutions
8916796651Ink cartridge for an inkjet printer
8926796629Color image processing apparatus, color image forming method, and recording medium
8936795215Print engine/controller and printhead interface chip incorporating the engine/controller
8946791718Halftone printing with dither matrices generated by using cluster filters
8956791717Image processing apparatus for performing pseudo-halftone processing and image processing method
8966791715Color electrophotographic apparatus and method of processing an image produced thereby
8976786565Inkjet proofing with matched color and screen resolution
8986783203Printing with multiple pixels as unit of gradation reproduction
8996781719Halftone imaging with reduced dot isolation
9006778299Error diffusion with partial dots method and system
9016775032Apparatus and method for halftone hybrid screen generation
9026774873Method for implementing error diffusion on plasma display panel
9036771391Image forming method and device
9046771388Halftone gradation processing method and apparatus
9056765694Color image processor
9066765692Image processing method and apparatus and image forming method and apparatus using the same
9076763144Halftone image reproduction
9086760126Adaptive halftoning method and apparatus
9096753877Halftone dot image display unit, and halftone dot image display program storage medium
9106753119Method of and apparatus for generating proof image
9116747760Print engine controller for a multi-segment printhead
9126747759Image forming apparatus, image processing method and recording medium
9136747669Method for varying initial value in gray scale modification
9146741735Method and apparatus for compensating for dot gain in stochastic printing
9156734991Method and apparatus for determining halftone line frequency estimates using MIN/MAX detection
9166731317Pulse modulation signal generation circuit, and semiconductor laser modulation device, optical scanning device and image formation device using the same
9176724501Apparatus and method for dither matrix design for color halftoning using dispersed dot clusters
9186724498Method of correcting halftone dot image data and image processing apparatus with halftone dot image data correction
9196717696Systems and methods for moire-reduced halftoning
9206714322Image processing apparatus, image processing method, and storage medium therefor
9216714320Image processor and color image processor
9226714225Image formation apparatus and image formation method
9236710778Method for halftoning using a difference weighting function
9246707577Gray scale image processing apparatus and gray scale image processing method therefor
9256707576Noise modulation error diffusion of digital halftoning
9266700992Adaptive message embedding error diffusion method
9276700680Image formation apparatus
9286697170Devices and methods for offset and similar printing systems
9296697169Enhanced error diffusion using a correlated chromatic noise pattern
9306697168Method for calibrating image recording equipment
9316693727Image processing apparatus for performing high-speed error diffusion
9326693659Image forming apparatus with a print head having variable lighting period
9336690837Screening method for overlapping sub-images
9346690389Tone modifying dithering system
9356687023Data processing system and method for producing shifted-element halftone screens
9366687021Method for digitally rasterizing half-tone images with rasters of any width and angle
9376683702Compact-dot reproduction of scanned halftone screens
9386680786Image processing method and device for half-tone representation
9396678073Error diffusion method and apparatus
9406674547Image processing apparatus for performing image formation using signals obtained by pulse-width modulating an image signal by a plurality of modulating methods

2003

9416671071Threshold bias circuits for enhanced color error diffusion
9426671068Adaptive error diffusion with improved edge and sharpness perception
9436655773Gray scale pattern and recording method and recording apparatus employing the gray scale pattern
9446654146Method of and apparatus for generating halftone dot image
9456643032Marking engine and method to optimize tone levels in a digital output system
9466643031Image processing apparatus
9476641241Method of generating halftone threshold data
9486637851Color halftoning for printing with multiple inks
9496635914Microelectronic programmable device and methods of forming and programming the same
9506633412Smoothness enhancement in laser printing through periodic modulation of halftone cell
9516628427Method and apparatus for image processing which improves performance of gray scale image transformation
9526628318Method for driving an optical write device
9536625327Method and apparatus of image processing capable of gradation reducing process with high image quality
9546614556Apparatus for quantizing a digital image by using an error diffusion coefficient and threshold modulation in zigzag quantization
9556608702Method for generating threshold patterns and gradation image binarizing device
9566608701Compact high addressability rendering
9576608700Removal of error diffusion artifacts with alternating distribution weights
9586606168Narrow band, anisotropic stochastic halftone patterns and methods of creating and using the same
9596603575System and apparatus for single subpixel elimination with local error compensation in a high addressable error diffusion process
9606597813Masks with modulated clustering and aperiodicity and rescaling of masks
9616590600Method and apparatus for controlling exposure amplitude and printed track width by pulse width modulation
9626587222Image processing apparatus for converting image data in accordance with characteristics of an image obtained at the time of expansion
9636584225Frequency domain halftoning
9646582046Method and device for image processing
9656563957Tone dependent error diffusion
9666563604Method of gradation reproduction
9676557964Printing apparatus and method
9686554384Ink jet recording apparatus and ink jet recording method
9696552824Method of processing pixels with binary or multibit error diffusion
9706552823Enhanced error diffusion by using peak position profiles
9716549657Image processing apparatus and method
9726543870Image processing apparatus and printing apparatus
9736538772Methods of converting and reproducing an image, an ink transfer member, and a medium including such an image
9746538771Image processor
9756538768Image processing apparatus and method thereof and storing medium
9766532082Halftone printing plates containing microscopic perforations and methods for producing same
9776530637Gradation reproduction method and gradation-reproduced image
9786519367Method and system for propagating selective amounts of error in a hybrid screening device
9796519056Halftoning device and image forming apparatus
9806515770Dither mask generation with calibration-independent number of threshold levels
9816515768Frequency modulation halfstone screen and method for making the same
9826512598Image forming apparatus capable of preventing linear nonuniformity and improving image quality
9836512597Method and apparatus for correcting unadjusted threshold arrays for halftoning by use of parameterized transfer functions that generate adjusted threshold arrays at run time
9846510252Image processing method and apparatus
9856507666Method and apparatus for compensating for dot gain in stochastic printing

2002

9866498661Method and apparatus for rendering grayscales at a facsimile presentation device using a calibrated threshold matrix
9876498660System and method for the dynamic thresholding of grayscale image data
9886496603Enhanced error diffusion by using directional guided line thresholding
9896493112Method and apparatus for producing halftone images using green-noise masks having adjustable coarseness
9906491373Printing method and a printing apparatus
9916486973Image forming apparatus and method for correcting density level of pixel data corresponding to each dot in a dot image
9926476934Geometrically reducing influence halftoning
9936474766System and method for color dither matrix creation using human-vision-system gray matrix with cluster radii
9946459817Image-processing method and apparatus generating pseudo-tone patterns with improved regularity
9956456396Method and apparatus for generating a screened reproduction of an image
9966456392Image processing apparatus capable of high-quality image formation
9976449396Compact rendering for processing binary high addressability images
9986449061System and method for providing dynamic noise profile selection for hybrid and error diffusion image processing
9996445466System and method for level based image reproduction
10006445465Digital halftoning combining dot size modulation screen with dot frequency modulation screen within a single image
10016445464Image processing method and apparatus
10026443549Continuous tone reproduction using improved ink jet droplet dispersion techniques
10036442300Three-pixel line screen with high addressability and error diffusion
10046439682Printing method, printing apparatus, and recording medium
10056437879Interpolation of greyscale levels
10066437877Print data processing method and apparatus
10076433891Stochastic screening method with dot pattern regularity control and dot growth
10086427030Method and system for image conversion utilizing dynamic error diffusion
10096424431Apparatus for generating one-dimensional dither values
10106414757Document security system and method
10116411401Programmable gray scale halftoner with object oriented resolution capability
10126406833Use of frequency-modulated screening for lightening offset printing surfaces
10136404508Gradation reproduction
10146400469Printing apparatus for color electronic photograph
10156389172Image processing apparatus and storage medium that stores program associated with the apparatus
10166385344Image processing apparatus
10176384935Image process apparatus, image process method and storage medium
10186382757Printer, method of printing, and recording medium for implementing the method
10196377361Image processing device and image forming apparatus
10206376138Rendering of continuous tone images by reducing clustering of halftone dots
10216373990Image processing utilizing luminance-density conversion
10226369912Image processing apparatus capable of applying line component to image
10236369911Apparatus for generating pulse-width data for toner-transfer-type printing apparatus
10246366362METHOD AND APPARATUS FOR ADJUSTING INPUT BINARY IMAGE HALFTONE DOTS USING TEMPLATE MATCHING CONTROLLED BY PRINT ENGINE XEROGRAPHIC DENSITY INFORMATION TO MAINTAIN CONSTANT TONE REPRODUCTION ON PRINTED OUTPUT OVER TIME
10256366307Clock independent pulse width modulation
10266362898Pulse width position modulator and clock skew synchronizer
10276356363Method for halftoning using interlocked threshold arrays or interlocked dot profiles
10286356362Halftoning by enhanced error diffusion
10296356361Image processing apparatus and method for processing gradation image data using error diffusion
10306356360Apparatus and method for rendering halftone dot structures using grey level dots
10316353687System and apparatus for single subpixel elimination with local error compensation in an high addressable error diffusion process
10326351319System and apparatus for single subpixel elimination with local error compensation in an high addressable error diffusion process
10336347159Method and system for processing image information using screening and error diffusion
10346346993Tone-variation-resistant phase-shiftable halftone screen system and method of using
10356335989Halftone printing using donut filters

2001

10366333793Image quality in error diffusion scheme
10376331040Method of driving ink jet recording head
10386330368Method for generating dither values for one-dimensional dither arrays
10396328400Printer system, method of generating image, and recording medium for realizing the method
10406320605Image information processing apparatus and method
10416317220Image forming apparatus capable of preventing linear nonuniformity and improving image quality
10426315391Ink-jet printer and print control method thereof
10436310698Process for calibrating electronic imaging devices
10446307978System and method for parallel error diffusion dithering
10456307647Digital halftoning with error diffusion
10466307638Image processing apparatus and electronic equipment and their control method
10476304341Image processing method and apparatus and image forming method and apparatus using the same
10486304340Composite halftone screens with stochastically distributed clusters or lines
10496292268Image processor and image processing method handling multilevel image data
10506289137Image processing apparatus and method
10516288795Method and apparatus for converting continuous-tone images to bi-level images
10526285800Apparatus and method for processing image
10536285464Apparatus and method for producing a half-tone image
10546282325Image processing technique for binarizing an image scanned by a shuttle type scanner
10556281924Image forming method
10566278802Frequency-modulation halftone screen and method for making same
10576278530Multi-dimensional dithering using one-dimensional dither arrays
10586271936Combining error diffusion, dithering and over-modulation for smooth multilevel printing
10596271926Printing system with print job programming capability
10606266157Method of error diffusion using 2.times.2 color correction and increment matching
10616266155Half-tone screen calibrations
10626266154Grayscale enhancement system and method
10636266079Half-tone dot generation
10646262811Increased functionality for holladay halftoning
10656262809Image processing apparatus shifting image data between adjacent picture elements
10666262745Digital halftoning using prioritized textures
10676256051Electrophotographic device, electrophotography, and process for preparing sheet bearing toner images
10686252679Composite halftone screens with stochastically distributed clusters or lines
10696252678Image formation method
10706252675Apparatus and method for halftone hybrid screen generation
10716249357System and apparatus for tonal reproduction curve adjustment in a hybrid error diffusion process
10726249355System providing hybrid halftone
10736236466System and method for converting a gray-level image into a binary image
10746233360Method and system for hybrid error diffusion processing of image information using adaptive white and black reference values
10756233036Optical printer
10766222643Probability error diffusion for digital image printing
10776211893Multi-gradation recording method
10786208430Increased functionality for Holladay halftoning
10796203133Apparatus and method for enhancing image resolution using multi-level data generated by halftone processor
10806201612Image processing method and apparatus employing block error diffusion
10816201560Multibeam modulation driver for a hyperacuity printer
10826198545Method and apparatus for generating halftone images by evolutionary screen dot contours
10836195468Error-distributing image conversion method
10846191868Distributed PWM halftoning unit and printer
10856190058Image processing method and apparatus and image forming method and apparatus using the same
10866185014Multi-color image forming method and apparatus
10876185008Multilevel screening for color laser printer
10886185006Error-distributing image conversion method
10896185005Half tone image enhancement for printers
10906184916Multiple-pulse, pulse width and position modulation systems and methods
10916181827Image processing method and apparatus
10926178267Image processing apparatus
10936178011Adaptive image resolution enhancement technology
10946175424Image processing apparatus and image processing method
10956173081Image processing method and apparatus with variation of error amount for error diffusion
10966172773Void and cluster apparatus and method for generating dither templates
10976172770Method of and apparatus for correcting halftone-dot image data, and method of correcting halftone-dot threshold data
10986172768Halftoning with changeable error diffusion weights
10996170930Method for producing gradient tonal representation and a printhead for producing the same

2000

11006167166Method to enable the recognition and rendering of antialiased images
11016166821Self calibrating pulse width modulator for use in electrostatic printing applications
11026166751Image forming apparatus
11036163382Devices and methods for offset and similar printing systems
11046160921Error diffusion with homogeneous distribution in highlight and shadow regions
11056154195System and method for performing dithering with a graphics unit having an oversampling buffer
11066147771Method of image density adjustment and apparatus using the method
11076144775Method and system for storing error values for an image conversion process utilizing dynamic error diffusion
11086141121Method and apparatus for color halftoning
11096141114Edge enhanced error diffusion with artifact correction in areas of highlights and shadows
11106134355Binarization using a local average, and using error diffusion
11116134351Image processing device performing the conversion of gradation value by means of error diffusion method
11126134025Dot image data output apparatus
11136134024Dithering device
11146133927Image forming apparatus
11156133902Gray scale level reduction method, apparatus and integrated circuit, and computer readable medium storing gray scale reduction program
11166130661Seamless parallel neighborhood process halftoning
11176128099Halftone screen generator, halftone screen and method for generating same
11186124844Force field halftoning
11196122407Method and apparatus for producing threshold arrays using variance minimization and sparse image calculations
11206122070Non-casual error diffusion method and apparatus
11216120123Ink jet recording apparatus and ink jet recording method
11226120121Recording apparatus and a method of forming driving data
11236118935Digital halftoning combining multiple screens within a single image
11246118547Image processing method and apparatus
11256118513Method and apparatus for copying transparencies to light-sensitive material
11266115504Image processing apparatus employing error diffusion type binarizing system
11276115140Method and system for half tone color conversion
11286111658Dither method and printing apparatus
11296109799Method of activating individually energizable elements in a thermal recording head
11306108452Geometrically reducing mask error diffusion
11316108450Threshold matrix-employed error diffusion image conversion method
11326108105Dot image output apparatus
11336104502Method and apparatus for generating halftone dots for color printing
11346101002Halftone-screen dither pattern generating method
11356101001Target patterns controlled error management
11366100996Image processing apparatus and method, print control apparatus and method, and printer
11376097502Multilevel screening for color laser printer
11386091858Method of converting continuous tone image into pseudo-halftone binary image
11396091849Method for halftoning a multi-channel digital color image
11406091512Image processing apparatus and method for improving image reproducibility
11416088123Dithering masks with very large periods
11426081653Color imaging
11436081349Image processing device, image processing system, and method for generating screens for image processing
11446072592Method and apparatus for preparing color screens in a halftone image
11456072590Method and apparatus for forming halftone dots
11466069609Image processor using both dither and error diffusion to produce halftone images with less flicker and patterns
11476067406Automatic calibration for output devices based on device output mode
11486064412Image forming apparatus using irradiation to form halftone image and method
11496061145Image processing apparatus and method using dot patterns
11506061143System and apparatus for single subpixel elimination with local error compensation in an high addressable error diffusion process
11516057946Tonality correction system
11526057933Table based fast error diffusion halftoning technique
11536055065Printer independent halftone image rendering
11546052203Printing system, printer, printer driver and program storage medium
11556052113Methods and apparatus for processing data values representative of an image with efficient dither matrices
11566049395Method and system for achieving enhanced gray levels in a screen cell array
11576040927Color halftoning options influenced by print-mode setting
11586034787Image processing apparatus having a high gradation mode and a high resolution mode of operation
11596031638Image forming device
11606031554Halftone recording method and apparatus
11616028677Method and apparatus for converting a gray level pixel image to a binary level pixel image
11626026199Method and apparatus for halftoning grey value signals
11636025930Multicell clustered mask with blue noise adjustments
11646025586Image processing device, image recording apparatus, and image reading device and image forming apparatus
11656020979Method of encoding high resolution edge position information in continuous tone image information
11666020978Method and apparatus for color halftoning using interlocked threshold arrays
11676020908Method and structure for modulation in a laser printer
11686016370Image data processing apparatus having pixel quantity conversion and error diffusion functions
11696016206Image processing method and apparatus and image forming method and apparatus using the same
11706014500Stochastic halftoning screening method
11716014499Image forming apparatus which forms an image by dot images
11726014227Printer with progressive column error diffusion system and method of using same for improved printer throughput
11736012796Ink jet recording apparatus and ink jet recording method
11746011878Image processing method and apparatus

1999

11756008792N.times.n window processing method and system for an image processing system
11766007230Engraving system and method with arbitrary toolpath control
11776006011Target patterns controlled error management
11786005596Method for recording color image, apparatus for recording color image, and method for controlling recording of color image
11796002493Method for reproducing an image
11805999704Image output apparatus
11815995669Image processing method and apparatus
11825991513Method and apparatus for suppressing moire patterns
11835990923High resolution dynamic pulse width modulation
11845978556Clustered halftone dot design process
11855978554Image processing method and system with selection of threshold matrix, from group including matrix with thresholds interpolated from other matrixes, based on edge resemblance in reference area
11865974231Driving apparatus for printer capable of recording multiple gradation, and printer with driving apparatus
11875974228Image rendition by plural-row error diffusion, for faster operation and smaller integrated circuits
11885973794Half-tone processing method
11895970178Adaptive halftoning based on image content
11905963715Color stochastic screening with optimal color dot placement for display devices having arbitrary aspect ratios
11915957593Halftone pattern geometry for printing high quality images
11925956157Method and apparatus for locally blending gray dot types of the same or different types to reproduce an image with gray level printing
11935953459Dither matrix producing method
11945953038Multilevel image recording method
11955949966Multiple tonal range image processing system
11965949964Method and apparatus for halftoning of images in a printer
11975949438High resolution real time Raster image processing system and method
11985946455Model based error diffusion with correction propagation
11995946454Image enhancement during half-toning using low-pass and high-pass filtering
12005946452Partially correlated minimum visibility halftone patterns for digital printers
12015946103Halftone patterns for trusted printing
12025943477Microlocal calibration of digital printers
12035940541Digital halftoning of a continuous tone image using error diffusion
12045937146Binarization processing apparatus and method
12055937109Automoire phase error correction for a hyperacuity halftoner
12065933539Method and system for hybrid error diffusion processing of image information using programmable screen modulation
12075931960Method and apparatus for handling error diffusion values
12085930404Image processing system and method
12095930396Method and apparatus for generating halftone output
12105930010Method and apparatus for color halftoning using different halftoning techniques for halftoning different dot planes
12115926582Method and system for converting multi-gradated image data into binary image data
12125926571Method of establishing halftone dot thresholds, apparatus for generating binary data, and image film/plate-making system
12135926570Optical scanner using dithering with adaptive threshold
12145923823Method and apparatus for generating halftone dots
12155920683Image enhancement system for high addressability printing
12165920682Multiple layer cluster dither matrix for reducing artifacts in printed images
12175920653Multiple spatial channel printing
12185917951Clustered aperiodic mask
12195917614Method and apparatus for error diffusion screening of images with improved smoothness in highlight and shadow regions
12205914731Data recording using randomized variations to prevent visual artifacts due to non-uniformities in a printing apparatus
12215912745Void and cluster apparatus and method for generating dither templates
12225912683Method of printing with an ink jet printer using an enhanced horizontal resolution
12235911009Method and apparatus for binary coding of image data including adding error accumulated for a target pixel and a pixel in the vicinity to be later coded
12245905816Method of and apparatus for binarizing image signals
12255905490Generating color-correction look-up-table addresses by multi-level half-toning
12265903361Method and system for processing image information using background error diffusion
12275898822Using the phase information in the halftone dot structure to minimize artifacts when switching between halftone dots on a scan line
12285898821Printing system with halftone substitution capability
12295898820Device for injecting high energy laser beam into optical fiber
12305898796Method of processing image having value of error data controlled based on image characteristic in region to which pixel belongs
12315898507Image processing apparatus
12325898505Resolution enhancement procedure and apparatus for a color laser printer
12335892852Image processing apparatus
12345892851Parallelized error diffusion
12355892588Digital halftoning combining dot size modulation screen with dot frequency modulation screen within a single image
12365886792Engraver for defining/generating edges or edge signals
12375884013Autotypical screening with optimised dotshape
12385884011Image processing apparatus and method
12395880857Error diffusion pattern shifting reduction through programmable threshold perturbation
12405875287Banding noise reduction for clustered-dot dither
12415872587Light signal generating device with reduced light leakage
12425867632System and method for providing glossy compression and contone/bitonal image conversion
12435867599Screenings of continuous tone images utilizing physical interactions of adjacent pixels
12445864406Method and apparatus for forming halftone images on organic-silver-salt-based printing plates
12455859955Stochastically clustered dot halftoning system
12465858589Intensity modulated stochastic screening for preparing a lithographic printing plate
12475855433Method of color halftoning using space filling curves

1998

12485854882Halftone correction systems
12495848224Optimally pipelined error diffusion architecture for converting scanned image into four-color printed image
12505847724Method for diffusing errors according to spot size in a printed liquid ink image
12515838462Hybrid imaging system
12525835687Methods and apparatus for providing digital halftone images with random error diffusion dithering
12535835238Phantom level edge enhanced error diffusion
12545835117Nonlinear dithering to reduce neutral toe color shifts
12555833376Method of activating individually energisable elements in a thermal recording head
12565832122Method of processing image data
12575831626Method and apparatus for generating halftone image with halftone dot rate correction
12585828815High quality multilevel halftoning for color images with reduced memory requirements
12595828463Printing plate for a halftone image having toner dependent rosette structures BV phase modulation
12605828397Image forming method and apparatus
12615825940Image processing method and apparatus for binary-coding multivalue image data
12625825932Method of establishing halftone dot thresholds, apparatus for generating binary data, and image film/plate-making system
12635825509Image processing device with error-diffusion quantization function
12645825503Engraving apparatus and method for adjusting a worn stylus using a midtone correction
12655822502Cluster dither ink duty limit control
12665822464Method and system for processing image information using video dependent dampened screening and error diffusion
12675822451Method for halftoning a multi-channel digital color image
12685822086Method and device for adaptive screening of continuous tone originals
12695819018Image data converting method and image processing apparatus
12705818971Method and image reproduction device for reproducing grey values using a combination of error diffusion and cluster dithering for enhanced resolution and tone
12715818604High precision gradation compensation for stochastic screening
12725815287Image forming processor having first and second image processing sections
12735815286Method and apparatus for producing halftone image with threshold matrix
12745809177Hybrid error diffusion pattern shifting reduction using programmable threshold perturbation
12755808755Toner dependent rosette structures in multi-layer screening by phase modulation
12765808622Image display using irregularly placed curving structures
12775805738Image processing apparatus and method
12785805734Hybrid imaging system
12795805724Method and system for hybrid error diffusion processing of image information using dynamic screens based on brightness/darkness settings
12805805305Image forming apparatus capable of producing a pseudo half-tone image by using dither patterns
12815805304Image processing apparatus
12825803127Coaxial piping systems
12835802212Clustered-dot dither with white-fleck suppression
12845799136On-line ink-duty reduction
12855796931Image data converting method and image processing apparatus
12865796411High resolution real time raster image processing system and method
12875793500Devices and methods for offset and similar printing systems
12885790704Image processing apparatus for performing random mask process
12895790273Method and apparatus for producing a grey scale stencil
12905790272Multi-tone image processing method and apparatus
12915787238Clustered halftone dot design process
12925787206Method and system for processing image information using expanded dynamic screening and error diffusion
12935786843Two-dimensional modulation for line screen printing
12945784496Error sum method and apparatus for intercolor separation control in a printing system
12955784495Image processing device for producing a variable period pulse-width modulated binary image signal
12965784049Image display using evenly distributed intensity clusters
12975781308High speed system for threshold matrix alignment and tiling, during creation of a binary half-tone image
12985778091Method and apparatus for generating halftone images with adjusted screen angles
12995777759Image processing method and apparatus
13005774236Multi-resolution halftone tilier
13015774229Halftone screen generator and halftone screen and method for generating same
13025774167Image processing device with dot diameter control
13035771105High speed system for grey level image scaling, threshold matrix alignment and tiling, and creation of a binary half-tone image
13045768432System and apparatus for pixel growth compensation in a hybrid error diffusion process
13055766807Halftone screen and methods for making and using the same
13065764811Image processing apparatus and computer readable medium for implementing image processing
13075764810Screenless conversion of continuous tone images with alterable dot spacing patterns
13085764378Image forming apparatus
13095761347Method and system for halftoning by tiling subsets of a threshold array over portions of an image
13105761325Digital halftone rendering of a gray scale image with frequency-dependent diagonal correlation
13115757976Adaptive filtering and thresholding arrangement for reducing graininess of images
13125757517Adaptive error diffusion method
13135754706System and apparatus for single subpixel elimination in an high addressable error diffusion process
13145754311Method and apparatus for generating simultaneously derived correlated digital halftone patterns
13155754303Image forming apparatus with a digital modulator
13165754218Variable dot density printing system using sub-microdot matrixing and a zoom lens
13175751920System and method for adapting the thresholds of a dither matrix to the amplitude of an input signal
13185751862Self-timed two-dimensional filter
13195751470Method for enhanced print quality on print engines with at least one high resolution dimension
13205748772Image processing method and apparatus including an error calculation for calculating a difference between the values of error correction data and stored representative values
13215748336Image processing method and image processing apparatus
13225745660Image rendering system and method for generating stochastic threshold arrays for use therewith
13235745259Void and cluster apparatus and method for generating dither templates
13245745250Method of producing tint dots with pairs of holladay halftones
13255745249Pipelined architecture for patterned halftone generation
13265742743Apparatus and method for generating a screen reproduction of a color image including dot shape rotation
13275740279Cluster dot halftoning system
13285739842Image forming method and apparatus using rotated screen with pulse width modulation
13295737453Enhanced error-diffusion method for color or black-and-white reproduction
13305737452Method of generating a threshold array
13315737091Error detection apparatus and method for use with engravers
13325732162Two dimensional linearity and registration error correction in a hyperacuity printer
13335729634Document processing system for enhancing halftone images including multiple centered dots
13345729632Reproduction apparatus and method for adjusting rendering with toners of different particle sizes
13355726772Method and apparatus for halftone rendering of a gray scale image using a blue noise mask
13365724158Image processing apparatus for selectively using MTF correction process for different regions of a composite image
13375724090Image forming method and apparatus thereof with control of dot position
13385721625Method and apparatus for generating halftone image considering spatial frequencies of original image
13395721578Methods of gradation control and picture quality improvement in a thermal printer which adapts a staggered printing system
13405719967Iimage processing apparatus
13415715073Processing by separate stages monochrome digital images to provide halftone color images
13425712929Image processing apparatus
13435712927Method and apparatus for binary-encoding image data using error diffusion with edge enhancement
13445712711Halftone image processing system for setting density threshold values
13455710836System and apparatus for tonal reproduction adjustment in an error diffusion process
13465710828Method and apparatus for converting a threshold matrix which is then used to binarize image signals
13475710636Method and apparatus for generating halftone images having human readable patterns formed therein
13485708518Method and apparatus for halftone rendering of a gray scale image using a blue noise mask
13495708514Error diffusion method in a multi-level image recording apparatus utilizing adjacent-pixel characteristics
13505706105Dither method and apparatus
13515706099Method and apparatus for generating serpentine halftone images
13525706075Exposure apparatus for controlling the duration of exposure operations according to compensated exposure data

1997

13535703695Multi-dot dither matrix generation
13545701366Halftoning with gradient-based selection of dither matrices
13555701135Display control method and apparatus
13565700610Time modulated stochastic screening
13575699174Apparatus and technique for generating a screen reproduction of an image
13585697712Image processing method and apparatus
13595696853Image processing system having variably controllable pixel density patterns
13605696846Method of and apparatus for binarizing image signals
13615696604Analytical halftone dot construction for a hyperacuity printer
13625696603Image formation apparatus having a gradation control unit
13635696602Method for halftoning using stochastic dithering with minimum density variance
13645696601System and method for redistributing error values from an error diffusion process
13655694527Image forming apparatus which processes input data based upon parameter data representative of a characteristic of image processing data
13665694224Method and apparatus for tone adjustment correction on rendering gray level image data
13675692109Method and apparatus for minimizing artifacts in images produced by error diffusion halftoning
13685691828Apparatus and technique for generating a screen reproduction of an image
13695691823Apparatus and method for random screening
13705691822Rapid variable angle electronic halftone screening using unrotated threshold matrices
13715691818System and method for enhancing edges and the like for engraving
13725689624Stochastic based increased tonal range flexographic screening process and apparatus
13735689623Spread spectrum digital screening
13745689344Mitigation of tenting deletions in color xerographic printers
13755687005Method of optimizing the reproduction of a picture copy through minimization of elementary halftone cell overlap
13765685652Method of preparing threshold matrix and method of and apparatus for generating halftone image
13775684932Method and apparatus for dither array generation to reduce artifacts in halftoned image data utilizing ink reduction processing
13785680485Method and apparatus employing erosion-based filter pairs for image mapping
13795677725Image forming apparatus and method performing a halftone image by pulse-width modulation
13805677093Size modulated stochastic screening
13815673121Stochastic halftoning screening method
13825673120Image output device
13835668638Error diffusion method with symmetric enhancement
13845666444Image processing apparatus
13855663810Method and apparatus for producing a digital half-tone representation of an image
13865663803Engraving method and apparatus for engraving areas using a shaping signal
13875661570Image-data processing apparatus
13885657070Circuit for driving an LED print head of an electro-photography machine
13895655061System and method for providing a high addressable printing system
13905654808Screening method for a rendering device having restricted density resolution
13915649073Automatic calibration of halftones
13925648801Grayscale printing system
13935646739Print device having a recording matrix switching device
13945642439Digital image processing method suitable for halftone representation based on dither process
13955642436Method for generating and storing digitalized density threshold values for the rastering of a half-tone picture original
13965642204Error diffusion method
13975640249Image processing apparatus using derived ordered dither matrix
13985638188Image processing method and apparatus with storing and selecting of dot patterns
13995638187Image dithering method enabling conversion of a gray level pixel image into a binary pixel image
14005638110Two dimensional slope thresholding in a hyperacuity printer
14015636331Patterned intensities printer
14025627919Image forming method and apparatus
14035627659Image processing system capable of selecting from among a plurality of error diffusion matrices
14045627652Multibit RAM for parallel lookup of high resolution halftone screens
14055625756Efficient use of dither matrix based gray level patterns
14065625755Method and apparatus for tonal correction in binary printing devices by predistortion of image data utilizing ink reduction processing
14075625716Method for compensating for transfer characteristics of a printing system in a halftone screening process
14085625460Method and apparatus for locally switching gray dot types to reproduce an image with gray level printing
14095621542Image processing apparatus and method with weighting of error data generated in quantization
14105621476Reducing the effects of noise in level number transformation
14115619334Continuous-tone printer with edge enhancement
14125619242Image forming apparatus with edge point detector based on image density charge
14135617217Engraving method and apparatus for generating engraving drive signals for engraving engraved areas of accurately controlled size in the surface of a workpiece using coefficient values and associated set up parameter values
14145617123Image processing method utilizing multiple binarizing and recording agent depositing steps
14155615311Image processing apparatus
14165615021Print N-tone images with imperceptible dots
14175611022Color imaging
14185608822Apparatus and method for generating half-tone dot in image reproduction
14195608821Method of high addressability error diffusion
14205606648Apparatus and method for modulating image signals in a high addressability printing machine
14215604605Method and device for intralinearly halftoning digitized grey value images
14225604527Dot printer and method for grey level recording with different bit-depth dimensions
14235602943Digital halftoning space filling curves
14245602653Pixel pair grid halftoning for a hyperacuity printer
14255600448Apparatus and method for generating a screened reproduction of an image
14265598204Image halftoning system capable of producing additional gradations
14275592592Method and apparatus for minimizing artifacts in images produced by error diffusion halftoning utilizing ink reduction processing

1996

14285587811Halftone screen using spot function to rank pixels following one or more design rules
14295587772Image forming apparatus having image signal discrimination device
14305583661Method of and apparatus for processing an image
14315583660Non-perpendicular, equal frequency non-conventional screen patterns for electronic halftone generation
14325581372Method for generating and storing digitized density thresholds for rastering a half tone original image
14335581371Error diffusion method
14345579457Image display apparatus and method using irregularly placed curving structures
14355577136Image processing apparatus
14365568572Method and apparatus for tonal correction in binary printing devices by predistortion of image data
14375565995System for correcting a pulse-width-modulated signal in a recording apparatus
14385565907Image forming apparatus capable of producing high quality halftone images
14395563956Apparatus for filing data used for identifying an individual and for executing bi-level printing and multi-gradation printing on the basis of the data
14405557709Method and apparatus for dither array generation to reduce artifacts in halftoned images
14415555103Half-tone conversion mask for digital images
14425555102System and method for generating images with improved visual quality using local correlation, ordered dither
14435553166Image processing apparatus
14445553165Parallel error diffusion method and apparatus
14455550647Image processing apparatus for converting a multilevel image signal into a bi-level image signal
14465548319Gradation data method processing including repeated reading and recording of high density data
14475546197Method and apparatus for generating halftone images with adjusted screen angles
14485546194Method and apparatus for converting a video image format to a group III fax format
14495543941Method and apparatus for halftone rendering of a gray image using a blue noise mask
14505543936Image adjustment system for translating raw input levels to adjusted input levels
14515543935Halftoning method using space filling curves
14525543855Image processing method and apparatus with error diffusion
14535542029System and method for halftoning using an overlapping threshold array
14545541743Method of and apparatus for generating halftone image with compensation for different dot gain characteristics
14555541740Image processing apparatus
14565539843Image processing system
14575539667Method and apparatus for improved digital film recorder
14585537496Method of any apparatus for converting gradient of image data
14595537223Rotating non-rotationally symmetrical halftone dots for encoding embedded data in a hyperacuity printer
14605535672Laser plate making method and press plate made thereby
14615535020Void and cluster apparatus and method for generating dither templates
14625535019Error diffusion halftoning with homogeneous response in high/low intensity image regions
14635533150Method and apparatus for improving the display of greys in a two-tone digitized image
14645532828Image forming apparatus with edge smoothing
14655532827Apparatus for reproducing image densities using pixel processing and method of use thereof
14665530561Method of and apparatus for binarizing image signal
14675530555Method and apparatus for recording halftone dot image with different repeating units
14685528384System and method for implementing fast high addressability error diffusion process
14695526445Spot function endtone noise and growth
14705526438Digital halftone rendering of a gray scale image with frequency dependent diagonal correlation
14715526143Apparatus and technique for generating a screened reproduction of an image
14725526021Dithering optimization techniques
14735521989Balanced error diffusion system
14745519792Method and apparatus for generating a screened reproduction of an image by digital interpolation
14755519791Block parallel error diffusion method and apparatus
14765519509Image processing method utilizing error diffusion technique
14775517584Method and apparatus for high-speed implementation of scaling, dithering, and data remapping operations with a single processor
14785517231Apparatus and method for increasing the productivity of a thermal printing apparatus for the production of finely detailed images of photographic quality
14795515480System and method for enhancing graphic features produced by marking engines
14805515456Process for providing digital halftone image with random error diffusion, color correction and enlargement
14815513280Discrimination of an edge portion of an image from a screen dot portion in an image processing system
14825508828Apparatus and method for generating a screened reproduction of an image employing a non-periodic screen function
14835508822Imaging system with multilevel dithering using single memory
14845506698Image reproducing apparatus and process wherein minimized average error technique is used for each of fractions of original pel intensity value
14855504462Apparatus for enhancing pixel addressability in a pulse width and position modulated system
14865502495Image processing capable of providing higher resolution in low-density regions
14875500744Method and appparatus for image scaling using parallel incremental interpolation
14885499305Method and apparatus for coalescing a grayscale image and rendering the coalesced grayscale image as a binary image
14895499111Image signal processing apparatus
14905497248Method and apparatus for viewing screened images
14915497180Image recording apparatus for representing a halftone by use of a plurality of recorded dots
14925495345Imaging system with two level dithering using comparator
14935495341Image processing apparatus which selects from one of plural generated clock counts
14945495278Image forming apparatus including a pulse width modulator
14955494361Color image recording method
14965493416Method combining error diffusion and traditional halftoning with arbitrary screen orientation
14975493411Image forming apparatus that modulates image density data
14985493410Printer varying pixel-shape to reduce jaggedness
14995489991Method for generating digital halftone images
15005488673Image processing with fixed or variable threshold
15015488487Image forming apparatus, and modulating method therein
15025486927Digital image forming apparatus using subdivided pixels
15035485289Hyperacuity printer architecture
15045485288Image processing apparatus for converting a color image into a pattern image with a synthesized gradation image increasing in density closer to contour portions of the pattern image

1995

15055479538Error diffusing method in image reproducing process and image processing apparatus using such a method
15065479263Gray pixel halftone encoder
15075477305Method and apparatus for halftone rendering of a gray scale image using a blue noise mask
15085477257Image forming method and apparatus using rotated screen with pulse width modulation
15095477179Apparatus for generating a modulated pulse signal
15105475497Two-dimensional display model-based halftoning
15115475496Image processing apparatus for binarizing multi-value image data
15125473734Method and apparatus for exposure calibration in recording devices
15135473733Technique for generating image reproduction
15145471543Mixed screen frequencies with image segmentation
15155469516Method for generating and storing digitized density thresholds for rastering a half tone original image
15165469515Halftone image formation using dither matrix generated based upon printed symbol models
15175469268Display model-based error criterion halftoning
15185469267Halftone correction system
15195467422Image forming apparatus with neighboring pixel processing
15205467201Iterative error diffusion system
15215463720Blue noise based technique for use in a halftone tile oriented screener for masking screener induced image artifacts
15225463478Image processing method and apparatus
15235463473Siphen for correcting a pulse-width modulated signal in a recording apparatus
15245463472Model-based halftoning
15255463471Method and system of color halftone reproduction
15265461410Gray scale printing using spatial light modulators
15275457488Method and apparatus for controlling array of light-emitting elements
15285454052Method and apparatus for converting halftone images
15295453848Picture processing apparatus
15305452095Recording apparatus and method having a recording mode which repeatedly records recording data for one line a plurality of times
15315450212Image forming apparatus and method
15325448656Binary image processing apparatus
15335448366Apparatus and method for noise distorting the painting of a halftone dot
15345446561Method and apparatus for digital scale halftoning with variable screen structure for electrophotographic printing devices
15355446558Apparatus and associated method for representing elliptical halftone dots
15365446550Image forming apparatus with random density pattern growth
15375444552Method for compressing, processing, and storing grayscale bitmaps
15385444551Process for specifying mean-preserving mutli-level halftone matrices with varying amounts of modulation
15395442461Screen generation for halftone screening of images with reduction of irrational correction artifacts
15405440684Parallel to serial conversion of information data
15415438634Dither processing method
15425438431Method and apparatus for generating digital halftone images using a rotated dispersed dither matrix
15435436736Image processing apparatus
15445436644Image forming method
15455434672Pixel error diffusion method
15465432536Process for printing on a surface of an object utilizing a specific toner particle size and minimum print element dimension
15475430557Image processing unit
15485426519Method and apparatus for implementing accurate angle screens
15495425112Method for optimizing frequency-modulated rasters upon utilization of threshold hills
15505424854Image processing apparatus for half-tone processing and reproducing high speed images of different resolutions
15515422742Method and apparatus for generating halftone images by discrete one-to-one dither tile rotation
15525420614Digital image forming apparatus
15535418627Screen dot image recording method
15545418626Image processing device for resolution conversion
15555418618Tone processing method for forming a halftone image
15565410414Halftoning in a hyperacuity printer
15575406392Image recording apparatus using multiple recording of the same image information to obtain high resolution and tonality
15585406379Method of hybrid halftone printing by limiting the number of gray pixels and gray pixel levels
15595398118Automatical generation of a periodic pattern without occurrence of moire
15605396607Matrix address generator and multivalue gradation processor having the same
15615394250Image processing capable of handling multi-level image data without deterioration of image quality in highlight areas
15625390263Method and apparatus for context sensitive post processing to select an appropriate modulation pattern for a pixel based upon neighboring pixels
15635389953Non-impact printer module with improved burn-in testing capability and method using same
15645387987Method and apparatus for reproducing half-tone images
15655386301Apparatus for producing a bilevel image suitable for a printing characteristic of a printing unit
15665383033Image processor for an improved tone level expression
15675383028Method and apparatus for recording rastered images
15685382965Wax transfer type thermal printing method and thermal printer
15695379130Text/image separation method
15705379126Image processing method and apparatus having high tone quality
15715379118Methods and apparatus for eliminating Moire interference using quasiperiodic patterns

1994

15725377015Image processing device for converting a scanned image into a monochrome image
15735374997High addressability error diffusion with minimum mark size
15745373455Positive feedback error diffusion signal processing
15755371612Method of and apparatus for forming halftone images
15765371524End pulse width modulation for digital image printer with halftone gray scale capability
15775371515Method and apparatus for non-linear dithering of digital images
15785369497Apparatus and method for modulating the area of pixels for tone reproduction
15795367384Method of and apparatus for generating halftone dots
15805365602Integrated half-tone screening and enlarging using an enlargement mapping pattern having linked, unique pattern segments
15815365348Process for printing a halftone image
15825363210Apparatus outputting quantized image data, selecting from filters with different error spreading effects
15835363125Method and device for correcting shading in thermal printer
15845361142Image processing apparatus and method for multi-level image signal
15855359433Image processing apparatus with reduced image deterioration in highlight portions
15865359431Classification to change exposure within a cell of different pixels
15875359424Thermal transfer image forming apparatus using different gamma functions for different density ranges
15885357344Method of and apparatus for recording halftone image
15895355303Printing apparatus
15905353128Method and arrangement for producing rastered color separations and printing forms
15915353127Method for quantization gray level pixel data with extended distribution set
15925351312Spatial filter of an image signal processor providing alternating line images without moire
15935343283Scan/print system for performing image processing and an image selection unit for use in the scan/print system
15945341228Method and apparatus for halftone rendering of a gray scale image using a blue noise mask
15955341221Facsimile apparatus
15965339172Apparatus and method for segmenting an input image in one of a plurality of modes
15975339171Image processing apparatus especially suitable for producing smooth-edged output multi-level tone data having fewer levels than input multi-level tone data
15985337167Halftone image forming apparatus including density based dot enlargement
15995337160Error diffusion processor and method for converting a grey scale pixel image to a binary value pixel image
16005335089Electronic high-fidelity screenless conversion system and method using a separable filter
16015333262Imaging system with multilevel dithering using two memories
16025333260Imaging system with multilevel dithering using bit shifter
16035331432Image forming apparatus
16045331430Electronic high-fidelity screenless conversion system
16055331429Digital generation of halftone images with error diffusion and frequency matched periodic screen rulings
16065329380Image processing machine
16075327339Image forming method
16085327167Printing cylinder engraving
16095325448Image treatment method and apparatus with error dispersion and controllable quantization
16105325211Error diffusion with output and input based feedback
16115325160Half tone recording method and light source device for writing
16125323247Method and apparatus for halftoning and inverse halftoning and the transmission of such images
16135323245Perpendicular, unequal frequency non-conventional screen patterns for electronic halftone generation
16145321525Clustered halftoning with dot-to-dot error diffusion
16155321523Image processing apparatus
16165319391Thermal printing apparatus
16175317653Method for quantization gray level pixel data with application of under compensated error diffusion
16185317418Halftone images using special filters
16195315669Dither processing method
16205315407Method of and apparatus for generating halftone dots
16215315406Screen generation for halftone screening of images using arbitrary distribution of transformed screen coordinates
16225313309Method and apparatus for printing halftones with a gray level printer with contour suppression and/or minimization of moire patterns
16235313287Imposed weight matrix error diffusion halftoning of image data
16245309526Image processing system
16255309258Pattern image generation device for image processing system
16265309254Image processing apparatus capable of processing halftone image data
16275309246Technique for generating additional colors in a halftone color image through use of overlaid primary colored halftone dots of varying size
16285307426Image processing apparatus with improved dithering scheme
16295307425Bi-level halftone processing circuit and image processing apparatus using the same
16305307181Screen generation for halftone screening of images using scan line segments of oversized screen scan lines
16315305118Methods of controlling dot size in digital halftoning with multi-cell threshold arrays
16325303334System for generating a rasterized graphic image
16335299020Method and apparatus for generating a screened reproduction of an image using stored dot portions
16345297217Tile-oriented technique for collectively performing image rotation scaling and digital halftone screening
16355294996Image processing apparatus adaptable for use at variable resolution
16365291310Screen generation for halftone screening of images
16375291309Image processing apparatus and method for multi-level image signal
16385291296Specific set of rotated screens for digital halftoning
16395289294Image processing apparatus
16405289293Pixel density conversion and processing
16415289291Image reading apparatus
16425287419Image signal processer reproducing halftone images in a recording system printed thickened or thinned dots
16435287209Image forming device for enhancing tone reproduction by changing dot size
16445285291Methods of assigning pixels to cells of a halftone grid
16455283658Image forming apparatus with TTL to ECL conversion between reading and printing circuits
16465283140Halftone image screening array of parallel lines with effective maximum and minimum optical density and method of generating a halftone image utilizing the screening array
16475278672Image signal processing apparatus
16485278671Image processing apparatus with correction of diffusion errors of overlapping dots
16495278670Content-based resolution conversion of color documents
16505276535Method and apparatus for halftoning of images using grayscale error diffusion

1993

16515274473Rapid variable angle digital screening
16525274472High addressability image generator using pseudo interpolation of video and screen data
16535272546Laser beam controller
16545272544Digital/analog converter and image processing apparatus using the same
16555271070Multi-dimensional error diffusion technique
16565268774Halftoning with enhanced dynamic range and edge enhanced error diffusion
16575268772Method of and apparatus for obtaining halftone image
16585267054Method and apparatus for the reduction of memory space required for a digital halftone system
16595265196Image forming apparatus
16605264926Perpendicular, equal frequency non-conventional screen patterns for electronic halftone generation
16615260810Image processing apparatus with improved dithering scheme
16625260807Method and apparatus for imbedding controlled structure for gray scale rendering
16635259042Binarization processing method for multivalued image and method to form density pattern for reproducing binary gradations
16645258854Converting between write-white, write-black and neutral bitmaps
16655258850Line screen design for gray scale rendering
16665258849Halftone dot arrangement in gray level halftone printing
16675258832Non-perpendicular, unequal frequency non-conventional screen patterns for electronic halftone generation
16685258780Beam recorder forming low density dots
16695257116High definition image generating system for image processing apparatus
16705257115Image recording apparatus using pseudo tone generated images
16715255351Pulse-width modulation device
16725255014Image forming apparatus having a high .gamma. photoreceptor
16735255013Multiple address grey level LED printing with binary architectured printhead
16745253084General kernel function for electronic halftone generation
16755253082Image forming apparatus
16765252986Image processing method for superposing plural dots on a recording medium at a predetermined interval and apparatus utilizing same
16775251267Image recording apparatus for processing image data based on characteristics of image data
16785249067Method of and apparatus for producing halftone dot image
16795249042Electronic color screening system using color-dependent trigonometric functions
16805245678Image conversion with lossy adaptive error diffusion
16815245444Image reproduction using error diffusion or dither matrix
16825245355Method and apparatus for grey level printing with amplitude and pulsewidth modulation
16835243446Adaptive clumped dithering with clump plane separation
16845243443Halftoning with error feedback and image dependent enhancement
16855243441Half tone image processing circuit with improved scale reduction images and method for reducing half tone images
16865241328Apparatus and method for thermal printing of finely detailed images of photographic quality
16875239391Apparatus for generating halftone dots from dot envelope parameters
16885239390Image processing method to remove halftone screens
16895235435Method of producing halftone images
16905235432Video-to-facsimile signal converter
16915233441Method for representing halftone dots with dot envelope parameters
16925233366Half-tone printing with thermal ink jet using random spot distribution in one dimension
16935232294Recording head driving device for printer
16945229867Method of and apparatus for making a half-tone reproduction of an image
16955229861Electronic gravure engraving apparatus including photo tone and character/solid tone processing
16965227895Method and apparatus for image reproduction
16975226096Digital halftoning with selectively applied dot-to-dot error diffusion
16985226094Method for making image conversions with error diffusion
16995225915Image processing with noise enhancing operators for moire reduction and/or random dot generation
17005223953Screening circuit for variable angle screening of image pixels
17015221971Area modulation printing apparatus
17025220432Methods and apparatus for half-tone imaging utilizing a rotated half-tone dot map
17035220357Image forming method and apparatus
17045218377Laser printing device with control of oscillation amplitude
17055216753Halftone compression with sharpness preservation
17065216443Programmable intensity smart laser system capable of being fabricated on a semiconductive substrate
17075214517Digital halftoning with correlated minimum visual modulation patterns
17085208871Pixel quantization with adaptive error diffusion
17095208684Half-tone image processing system
17105204916Tile-oriented technique for collectively performing image rotation, scaling and digital halftone screening
17115204760System and method for converting continuous half tone image into pseudo half tone image
17125204753Multi-bit rendering method and arrangement for continuous tone picture representation and printing
17135202772Color halftone screen utilizing preselected halftone dots placed at preselected distance and screen angles from center halftone dots
17145201013Dither processing method
17155200841Apparatus for binarizing images
17165200839Image processing apparatus
17175200831Method and arrangement for locally switching gray dot types to reproduce an image with gray level printing
17185198910Mixed matrix image processing for rendering halftone images with variable dot sizes
17195196942System and method for determining picture element values
17205194879Image forming apparatus capable of changing dotting density
17215193011Method and apparatus for producing variable width pulses to produce an image having gray levels
17225191640Method for optimal discrete rendering of images
17235189441Image forming apparatus having density control
17245187594Method of creating and applying half tone screen patterns
17255187592Image communication method and apparatus with selection of binarization method for transmission
17265187495Image forming apparatus for obtaining image upon scanning with laser beam
17275184226Digital video pulse width and position modulator
17285184213Binarizing method for color image using modified error diffusion method
17295182575Image forming apparatus
17305179448Methods and apparatus for eliminating Moire' interference using quasiperiodic patterns
17315177795Image processing apparatus
17325177623Image processing apparatus and method

1992

17335175635Picture printing apparatus using multivalued patterns, binary patterns and dither patterns selectively
17345172247High speed digital error diffusion process for continuous tone image-to-binary image conversion
17355172132Digital image forming device and method for forming an image from a plurality of dots
17365170261Printing method
17375166809Apparatus and methods for digital halftoning
17385164717Method and apparatus for the dithering of antialiased vectors
17395161036Picture digitizing system using randomly varied binary threshold data
17405159470Image processing method and apparatus with reduction of granular noise, etc.
17415157741Image processing method and apparatus for out-putting dot-processed data with suppression of false contours and other noise
17425155599Screening system and method for color reproduction in offset printing
17435155598Method and apparatus for processing and reproducing images
17445153925Image processing apparatus
17455153576Mapping of color images to black-and-white textured images
17465151973Printing apparatus and information processing apparatus using the same
17475150429Image processor with error diffusion modulated threshold matrix
17485150428Method for generating halftone image data with randomly selected threshold array
17495150225Apparatus for generating a screened reproduction of an image
17505148287Image processing apparatus with good highlight reproduction
17515144338Image recorder using pulse width modulation
17525142374Image recording method and apparatus therefor
17535142301Gradation control circuit for a thermal head
17545140432Method and system for printing in one or more color planes with improved control of error diffusion
17555140431Digital electronic system for halftone printing
17565140349Recording apparatus
17575138337Apparatus for grey level printing using a binary architectured printhead
17585136316Printing press and method
17595134668Masked combinations of video slices for computer display
17605130823Error diffusion system
17615130821Method and apparatus for digital halftoning employing density distribution for selection of a threshold template
17625130819Image processing apparatus
17635128692Symmetric binary weighted exposure method and apparatus employing center pulse width modulation for continuous tone printer
17645126757Multi-gradation image recording apparatus
17655125045Image processing system
17665124803Method and apparatus for generating digital, angled halftone screens using pixel candidate lists and screen angle correction to prevent moire patterns
17675124802Electrostatic lasar printer with a short side length of a modulation area formed by pulse width modulation set relative to a detected toner particle size
17685124726Non-impact printer apparatus for grey level printing
17695122883Raster scanning engine driver which independently locates engine drive signal transitions within each pixel
17705122792Electronic time vernier circuit
17715121447Apparatus for performing gradation processing on image data
17725121446Image processing apparatus capable of obtaining multi-level data
17735121223Method and apparatus for generating a binary representation of an image
17745113264Method of and apparatus for forming halftone dots
17755111310Method and apparatus for halftone rendering of a gray scale image using a blue noise mask
17765111302Method and system for enhancing the quality of both color and black and white images produced by ink jet and electrophotographic printers
17775111217Dot printer and method for grey level recording
17785111194Artificial halftone processing apparatus
17795109283Raster scanning engine driver which independently locates engine drive signal transistors within each cell area
17805109282Halftone imaging method and apparatus utilizing pyramidol error convergence
17815107349Multiple screen frequency half-toning with one screen angle
17825107346Process for providing digital halftone images with random error diffusion
17835105280Image forming device which can form an image by printing a plurality of pixel unit areas which are composed of multiple sub pixels
17845101283Halftone image generating apparatus
17855097343Apparatus for driving thermal printer head image printer
17865087981Error diffusion of overlapping dots
17875086484Image processing apparatus with fixed or variable threshold
17885081528Image forming apparatus
17895079721Apparatus for generating a screened reproduction of an image
17905079638Image reading apparatus

1991

17915077812Image processing apparatus
17925077615Halftone image recording apparatus combining error scattering and multi-level tone conversion techniques
17935075780Method of reproducing gradations according to a ratio of fine pixels turned on to fine pixels turned off
17945075698Method of driving a recording head and a recording apparatus utilizing this method
17955072291Image information signal processing apparatus for improving reproduced image quality by discriminating the type of input image and selecting a particular processing in accordance therewith
17965068914Apparatus for reducing artifacts in error diffused images
17975068746Image processing apparatus
17985067025Method of recording halftone dot image
17995065441Image processing apparatus
18005065256Method of and apparatus for processing image signal
18015060284Adaptive error diffusion thresholding for document images
18025055944Image signal processing apparatus
18035055943Method of and apparatus for recording halftone image
18045055942Photographic image reproduction device using digital halftoning to screen images allowing adjustable coarseness
18055055923Method of and apparatus for recording halftone images and halftone images produced thereby
18065053887Technique for producing a fine grained dithered halftone image having an increased number of gray levels
18075051844Digital halftoning with error diffusion
18085051841Process for providing digital halftone images with random error diffusion
18095051755Thermal printing apparatus
18105050000Error diffusion of subcells in digital halftoning
18115045952Method for edge enhanced error diffusion
18125043749Printing press and method
18135041920Image halftone generation by static RAM look-up table
18145040080Electronic screening
18155034990Edge enhancement error diffusion thresholding for document images
18165031050Method and system for reproducing monochromatic and color images using ordered dither and error diffusion
18175029227Image processing apparatus
18185025322Method and apparatus for grey level recording using multiple addressability
18195025272Dot exposure type image forming apparatus
18205019916Digital copier with a facsimile function
18215017944Control system for information recording laser beam
18225014333Image processor with smooth transitioning between dither and diffusion processes
18235014138Process for recording semihalftone images and device for conversion of image dot tonal value data
18245014124Digital image processing apparatus
18255008950Image processing method and apparatus for error-dispersion digitization without moire or spurious stripe formation
18265008837Gray scale generating circuit for thermal printer
18275006938Half-tone image generator using white noise source
18285006937Imaging data processing apparatus
18295006704Optical scanner and method for generating and detecting a composite dot on a scanning medium
18305005027Thermal recorder
18314999718Image processing apparatus with interference suppression
18324999629Two tone and multiple image discrimination and signal binarization system
18334994822Pulse count modulation for thermal printing
18344992955Apparatus for representing continuous tone and high contrast images on a bilevel display
18354992804Modulated beam scanning with pixal exposure control
18364991113Thermal transfer printer with image data processing
18374989098Processing apparatus using selectable period triangular or sawtooth waves
18384989096Producing half-tone images of higher resolution through interpolation of original data
18394987498Method of forming halftone screen
18404987495Image processing apparatus with image formation condition detection for control of processing
18414985779Improved method and apparatus for generating halftone images
18424984097Halftone reproduction with enhanced gray level reproducibility
18434984092Halftone image gradation data converted to bit-train data with data retained after thresholding converted to pulse-train data

1990

18444977464Method of producing halftone images by choosing a conversion function based on virtual and reference solid pixels
18454977458Apparatus for addressing a font to suppress Moire patterns occurring thereby and a method for use therein
18464975786Image processing method and apparatus with error diffusion capability
18474974067Multi-step-digital color image reproducing method and apparatus
18484972502Image signal binary encoder
18494969053A color film reading apparatus providing high-gradation color signals
18504969052Image processing method and apparatus
18514969047Processor for detecting the number of bit times in portions of a binary video signal to produce a corresponding number of width adjustable dot pulses
18524965672Method and apparatus for halftone imaging
18534965599Scanning apparatus for halftone image screen writing
18544963989Method and apparatus for grey level printing
18554962542Method for reducing artifacts in error diffused images
18564959730False density contour suppression using randomly modified input signals for comparison to threshold values
18574958239Method of gradation and selection of micro picture elements therefor in a picture display
18584958238Image processing method and apparatus with conditional correction of error data
18594958236Image processing method and apparatus therefor
18604958218Image processing method and apparatus with dot-processing
18614955065System for producing dithered images from continuous-tone image data
18624951159Digital modulation technique
18634951152Circuit for controlling thermal array recording head
18644945422False density contour suppression using stored random probabilities to form print/no-print decisions
18654939589Process for recording semihalftone images and device for conversion of image dot tonal value data
18664935822Method for image reduction processing according to criterion points
18674933777Method of real-time converting analog video signal to digital half-tone data and converters thereof
18684933686Method of and apparatus for transferring an image in a thermal transfer printer
18694930023Halftone dot generator using grained screen patterns
18704930022Method and device for image reduction in image processing
18714930007Digital color image processing method and apparatus for discriminating high resolution areas of a color image signal and controlling image processing in accordance with the discrimination
18724926268Image processing apparatus which converts m-bit image data to n-bit (n>m) image data
18734926267Reproduction of halftone original with reduced moire
18744926248Scanning recording type printing method and apparatus for increasing image quality by controlling tone dot locations within image pixels
18754924322Bi-level image display signal processing apparatus
18764924301Apparatus and methods for digital halftoning
18774922335Color film reading apparatus providing high-gradation color signals
18784920501Digital halftoning with minimum visual modulation patterns
18794918622Electronic graphic arts screener
18804918543Apparatus for thresholding an image signal
18814916545Electronic graphic arts screener that suppresses Moire patterns using pseudo-random font selection
18824916530High resolution halftone dot generator system including LED array
18834914524Image reading apparatus and method
18844914455Process control for electrostatographic printers
18854912569Method for thresholding an image signal
18864912568Halftone dot image recording apparatus and method employing high density screen pattern signal for light beam modulation
18874912562Method of and means for printing a multilevel representation of an image
18884905294Image processing apparatus
18894905022Image forming apparatus having laser light source
18904903147Method and apparatus for processing an image
18914903123Image processing apparatus using inclined line screens to reduce Moire
18924897736Color image processing apparatus using a deformed dot matrix
18934897734Image processing apparatus
18944894727Image processing system and method
18954894726Methods and apparatus for eliminating Moire interference using quasiperiodic patterns
18964894712Density gradation control type thermal printer
18974891714Apparatus for non-linear error diffusion thresholding of multilevel video images
18984891710Bi-level image display signal processing apparatus

1989

18994890167Apparatus for processing image signal
19004890121Halftone image printing device
19014884080Color image printing apparatus
19024879753Thresholding algorithm selection apparatus
19034878126Imgae processing apparatus
19044878125Method and apparatus for image processing with fed-back error correction
19054876611Process for recording semihalftone images
19064876610Image processing apparatus with binarization-error dispersal
19074876609Digital copier with a facsimile function
19084873428Image processing apparatus using conversion means
19094870499Image processing apparatus
19104868684Image processing apparatus
19114866534Image processing apparatus
19124866533Image processing device
19134864419Image processing apparatus
19144864326Dual beam recorder
19154860115Digital copier with a facsimile function
19164849980Laser beam recording method and apparatus
19174847695Image processing apparatus in which the minimum and maximum widths of a pulse-width modulated signal can be independently adjusted in accordance with predetermined data signals
19184841377Continuous image estimation method
19194837846Method of the image processing
19204835551Optical recorder with plural resolution recording
19214831392Image processing apparatus using pulse width modulation with improved sensitivity
19224825298Halftone dot-generator and generating method
19234821334Image processing apparatus
19244821115Color hard copy apparatus having simplified analog-to-digital conversion with adjustable threshold levels
19254821109Generating half-tone representations
19264819193Gradation processing method for color images
19274819066Image processing apparatus
19284815058Optical information processing apparatus
19294814886Image processing process and apparatus therefor
19304812918Method and apparatus for scanning and digitizing optical images
19314812910Image reproducing equipment
19324811239Digital facsimile/image producing apparatus
19334809082Method of and apparatus for generating image data used to record an image having gradation
19344806950Image recording apparatus for heat generation type
19354806946Light beam scanning recording method
19364805033Method of forming oblique dot pattern
19374800443Method and apparatus for carrying out a dithering operation
19384800442Apparatus for generating an image from a digital video signal
19394797943Gradation data processing apparatus

1988

19404786976Image processing apparatus
19414783837Image processing apparatus
19424783680Halftone screening system for printer/copier
19434783145Multiple gradation dot-matrix picture forming method
19444782400System for encoding or decoding analog video signals
19454782398Image processing apparatus
19464780768Halftone image recording method and apparatus
19474777536Thermal printing device
19484777535Apparatus for recording CT images directly on a recording medium without using a CRT
19494773734Method of forming halftone screen
19504768042Thermosensitive gradation printer
19514763199Image processing apparatus and method of adjusting same
19524755813Screening circuit for screening image pixels
19534754291Light beam scanning recording apparatus width modulation of both total pulse duration and intensity
19544752822Color halftone image processing apparatus producing various screen angles and having an adaptive color image data conversion look-up table and a small-capacity masking memory
19554751568Image information reading apparatus which discriminates between colors
19564750010Circuit for generating center pulse width modulated waveforms and non-impact printer using same
19574745466Digital color image processing apparatus with color masking processing unit addressed by a plurality of multi-bit color component signals using various combinations of the bits of the signals
19584742400Digital image processing device for intermediate tone
19594742399Method of and apparatus for generating high-resolution bilevel image data
19604740844Method of changing magnification of image
19614736254Method and apparatus for generating pseudo-halftone dots by comparing gray scale values of an original with dither threshold values stored in cells of a matrix array divided into imaginary matrices of elemental areas each containing one cell
19624736253Method and apparatus for producing a halftone dot by selectively comparing image signals with highlight and shadow reference values or with halftone dot sub-cell reference values
19634734790Video printing process and apparatus
19644734786Image processing apparatus
19654734784Image processing apparatus
19664734782Image processing apparatus or system with plural reading units, capable of differently processing various areas of an original
19674733230Method of displaying continuous tone picture using limited number of different colors or black-and-white levels, and display system therefor
19684731673Image output device
19694730221Screening techniques by identification of constant grey components
19704727430Halftone image recording method and apparatus therefor

1987

19714712116Means and method of symmetrical energization of individual array LED's for image exposure
19724710822Image processing method
19734709395Method and apparatus for minimizing errors in the digital processing of electrical signals
19744709274Image processing apparatus
19754709149Copying machine
19764706077Halftoning implementation for interactive image editing
19774704618Signal-processing circuit for heat-sensitive recording apparatus
19784701811Tone reproduction method and apparatus
19794701808Image processing apparatus with variable magnification and gray level processing
19804701806Adaptive pseudo halftone generator
19814700235Method and apparatus for producing half-tone printing forms with rotated screens on the basis of randomly selected screen threshold values
19824700233Image sensors having alternating arrays of high and low sensitivity picture elements
19834700201Dot corrected laser printer
19844698778Method of processing gradation information with variable magnification
19854698691Halftone image processing method
19864698690Image signal processor
19874698688Image processing system
19884692879Method of and apparatus for forming the address signals of a screen memory of a half tone dot generator
19894692811Apparatus for processing image signal
19904691211Thermal printer
19914680646Image forming device for reproducing a half-tone image
19924680645Method for rendering gray scale images with variable dot sizes
19934680596Method and apparatus for controlling ink-jet color printing heads
19944677571Electronic publishing
19954675831Method of processing gradation information
19964675743Electronic publishing
19974674861Image processing apparatus
19984673971Halftone dot formation
19994668996Method and apparatus for generating halftone dots
20004668995System for reproducing mixed images
20014667250Halftone digital image processing device
20024663662Picture signal processing system featuring simple or dithering binarization processing selected in response to local variations in picture density
20034661859Pulse width modulation greyscale system for halftone printer
20044659113Method of screening half-tone picture themes
20054654721System for reproducing multi-level digital images on a bi-level printer of fixed dot size
20064652892Gradation control device for thermal ink-transfer type printing apparatus
20074651287Digital image processing algorithm for output devices with discrete halftone gray scale capability
20084651228Method and arrangement for the representation of a halftone image by use of a detection-adapted grid
20094647962Method and apparatus for generating a half-tone image representation with individual groups of one or more scanning beams controlled in response to half-tone dot information and either low-or high-resolution image data
20104644392Method for simultaneously recording a halftone picture portion, a line drawing portion with a desired screen tint, and a boundary portion between them on a plurality of color separations
20114638373Method and apparatus for improving gray scale resolution in an ink jet printing system
20124635131Method of and apparatus for producing halftone dot film of gradated density distribution

1986

20134633328Picture scanning and recording method
20144633327Enhancement halftoning
20154628366Picture scanning and recording method
20164626923Image processing apparatus
20174626902Method and system for processing a border pixel
20184626901Image processing apparatus using multiple dither matrices
20194623972Half-tone dot imaging
20204622595Image display unit capable of tone reproduction
20214611217Thermal transfer color gradation printing apparatus
20224595956Image processing apparatus
20234593297Halftone image recording system
20244590491Thermal transfer printer
20254583127Reproducing machine
20264578714Halftone image recording apparatus
20274578713Multiple mode binary image processing
20284566042Electrophotographic imaging apparatus by variably placing pixel elements

1985

20294558328High resolution thermal ink transfer printer
20304557596Method of screening half-tone picture themes
20314556918Method and apparatus for generating screened halftone images
20324554594Apparatus for scanning and digitally processing half-tone images
20334553173Image processing apparatus
20344553172Picture scanning and recording method
20354551768Method and apparatus for processing image signal
20364549220Apparatus for processing image into binary data
20374547814Method of recording a halftone picture electronically
20384547812Method and apparatus for forming high resolution halftone images
20394547811Method and apparatus for gray level signal processing
20404543613Method for producing halftone dots in a halftone plate recording apparatus
20414538184Method and apparatus for processing video signals
20424533941Method and apparatus for half-tone reproduction of a varying tone original image
20434532523Tone control for thermal ink-transfer printing apparatus
20444532503Sequence controlled pixel configuration
20454525748Method and apparatus for scanning and digitizing optical images
20464521790Electrostatic printer of video pictures with grey tones
20474517606Apparatus for processing video signals
20484517605Image signal processing apparatus
20494507685Image recording device
20504504115Digital facsimile communication system capable of representing tone differences
20514499489Production of screen printing blocks
20524498108Screen for reproducing continuous-tone pictures
20534498090Electrostatic printing apparatus
20544496989Method for composing and recording a picture and a character by using picture signals and character signals for use in a picture reproducing machine
20554496987Conversion of an analog image signal into a binary image signal
20564495522Recording apparatus and method of picture image
20574491875Apparatus and method for tonal image processing

1984

20584486788Method for producing a halftone plate for use in a picture reproducing machine
20594485408Halftone processing method for digital facsmile apparatus
20604485397Method for producing printing forms with irregularly distributed printing points
20614482923Method for autotypical tonal value analysis
20624468706Imaging by varying the placement of elements in the pixels
20634468442Method for manufacturing half-tone printing plates
20644467367Half-tone picture recording device
20654467354Video format unit
20664456924Screened image reproduction
20674455578Electronics for arrayed photosources
20684450485Image scanning and recording method
20694449150Method of processing medium tone picture
20704447831Method and apparatus for encoding graphics
20714443121Thermal printing apparatus with reference gray scale comparator
20724439789Binary scan system
20734438453Constant light greyscale generator for CRT color camera system
20744432613Exposure light beams control method for use in a picture reproducing machine

1983

20754419691Method for the improved reproduction of image in reproduction technology
20764419690Method and apparatus for producing a half-tone reproduction
20774415920Image signal processing unit
20784415913Gray tone recorder
20794414581Image signal processing method and apparatus therefor
20804413286Method and apparatus involving digital screen generation
20814413269Method of and apparatus for controlling gray scale while printing on charge sensitive recording mediums
20824412256Method and apparatus for the representation of gray scale values in facsimile transmission
20834404570Laser recorder
20844403258Method and device for sequentially imaging an original
20854401993Heat-sensitive type multi-gradation image recording apparatus
20864400738Image signal processing method and apparatus
20874399468Printer
20884395766Laser type recording device
20894394662Dot printer for reproduction of halftone images
20904393452Method of reproducing a picture having improved resolution
20914389712High information density laser image recording method and apparatus
20924384297Laser recorder reproducing a picture having half-tones of high accuracy
20934378568Light valve imaging apparatus and method for providing gray scale
20944375065Laser recorder
20954375064Laser recorder
20964374388Method and an arrangement for depicting a half-tone image
20974370667Laser recorder
20984368491Driving equipment for multi-gradation level reproduction

1982

20994366507Shaded picture signal processing system and method
21004353628Apparatus for producing images on radiation sensitive recording mediums
21014350996Screened image reproduction
21024349846Picture processing method
21034347523Laser recorder
21044342051Method of and system for reproducing or transmitting half-tone images
21054340912Random screen generator apparatus for producing halftone images
21064339774Apparatus and method for generating a dispersed dot half tone picture from a continuous tone picture
21074335968Tint restoring device employing a thermal printing head
21084321631Control method and device for reproducing a halftone dot cut away along a picture outline

1981

21094278999Moving image scanner
21104276567Recording line elements
21114264932Picture signal receiver for facsimile and the like
21124258393Picture processing method
21134257072Method and apparatus using multiple deflections for reproducing a halftone image by scanning
21144251625Method of producing a halftone picture by vibrating light source
21154245258Method and apparatus for reduction of false contours in electrically screened images

1980

21164237495Circuit for doubling the number of output bits of a photodiode array
21174232344Device for reproducing a halftone picture by scanning
21184214277Halftone implementation apparatus
21194210936Method and apparatus for reproducing an original gray scale image
21204208677Facsimile circuit
21214196454Tone error control for relatively large image areas
21224196453Image screening system
21234196452Tone error control for image contour removal
21244196451Electronic halftone generator
21254194221Automatic multimode continuous halftone line copy reproduction
21264189752Electronic screening with galvanometer recorders
21274185304Electronic halftone screening

1979

21284151555Optical scanning and encoding device
21294150400Methods of a coarse-scan/fine-print character reproduction with compression
21304149195Method and apparatus for producing rastered printed forms
21314149194Variable angle electronic halftone screening
21324149183Electronic halftone generator

1978

21334130841Variable frequency half-tone imaging apparatus
21344122496Apparatus and method for digital halftone reproduction
21354115816Electronic screening
21364106061Density control for ink jet copier
21374084259Apparatus for dot matrix recording
21384084196Electronic half-tone generating means for facsimile reproduction system
21394084183Method for the electro-optical reproduction of half-tone pictures
21404081828Method for halftone reproduction of continuous tone images
21414080634Halftone reproduction device with high resolution scanning and recording system
21424074319Light emitting diode array imaging system - parallel approach
21434074318LED array imaging system-serial approach
21444071849System for printing images having a half tone

1977

21454052715Digital half-tone grey scale expansion system
21464051536Electronic halftone imaging system
21474040094Electronic screening
21484033443Logic circuit for grey-tone printer
21494032978Pseudo halftone print generator and method
21504012584Apparatus for making a screen reproduction of an image
21514004079Method and apparatus for dual resolution photographic reproduction of line and continuous tone graphic materials
21524001492Half tone reproducing process in facsimile

1976

21533997911Screened image reproduction
21543983319Electronic screening for image reproduction
21553977007Gray tone generation
21563965290Video-to-binary conversion apparatus having moire suppression characteristics
21573961132Sequential image-modulated dot-area recording
© 2017, ПАТ-Инфо, В.И. Карнышев
Дата формирования списка: 03.04.2017