| Patents for G03F 3 - Colour separation; Correction of tonal value (5,370) |
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| 03/06/1991 | CN1049722A Converter technique for grey scale hierarchy for drawing reproduction |
| 03/05/1991 | US4997733 Dry Dot Etching |
| 02/27/1991 | EP0413863A1 Image-forming process and image-forming material |
| 02/27/1991 | EP0264405B1 Process and device for electronic page assembly for use in reproduction |
| 02/27/1991 | CN1049582A Apparatus and method for automatically tensioning and relaxing record material |
| 02/26/1991 | US4996605 Method and apparatus for image scanning input for an image scanning recording apparatus |
| 02/21/1991 | DE3927162A1 Vorrichtung zum automatischen auf- und abspannen von aufzeichnungsmaterial und betriebsweise der vorrichtung Device for automatic up and wind down from record material and operation, the device |
| 02/20/1991 | EP0413559A2 Developer composition for positive working color proofing films |
| 02/20/1991 | EP0413557A2 Image processing apparatus |
| 02/19/1991 | US4994350 Method for forming a color proof having a specified toe gradation |
| 02/19/1991 | US4994345 For proofreading |
| 02/18/1991 | WO1991003121A1 Device for automatically clamping and releasing data supports and its operation |
| 02/18/1991 | CA2065363A1 Device for automatically clamping and releasing data supports and its operation |
| 02/17/1991 | CA2020538A1 Developer composition for positive working color proofing films |
| 02/13/1991 | EP0412495A2 Image-reversal process using photosensitive peel-apart elements |
| 02/12/1991 | US4992864 Image processor having density indicator |
| 02/12/1991 | US4992826 Contact exposure apparatus |
| 02/10/1991 | CA2022627A1 Image-reversal process using photosensitive peel-apart elements |
| 02/07/1991 | DE3925533A1 Producing printing matrix with corrected raster dot sizes - correcting separate partial surfaces w.r.t. standard dependent on their tone value |
| 02/06/1991 | EP0411479A2 Method for electrophotographic image formation |
| 02/06/1991 | CN1049062A Changing method for image tone |
| 01/29/1991 | US4988591 Process for producing color images |
| 01/29/1991 | CA1279521C Method of changing the density of image on simple color proof and a mask used therefor |
| 01/22/1991 | US4987051 Positive image of transparency on coversheet and negative image of transparency on elastomeric layer |
| 01/22/1991 | US4987050 Light-sensitive transfer material and image-forming process using the same |
| 01/22/1991 | US4987048 Image forming material |
| 01/22/1991 | US4986211 Toning method and member for electrostatography |
| 01/16/1991 | CN1048606A Photosensitive leuco dye containing electrostatic master with printout image |
| 01/08/1991 | US4984071 Method of and apparatus for establishing a reference point on a gradation correction curve |
| 01/02/1991 | EP0405543A2 Photosensitive leuco dye containing electrostatic master with printout image |
| 12/31/1990 | CA2019940A1 Photosensitive leuco dye containing electrostatic master with printout image |
| 12/27/1990 | EP0404522A2 Multilayer imaging article for transfer color proofing |
| 12/27/1990 | EP0404507A2 Positive or negative working overlay color proofing system having photoresistive layer |
| 12/26/1990 | CN1048004A Ink-jet printer |
| 12/26/1990 | CN1010987B Photo hardening electro static printing mould containing electron donor and donee |
| 12/26/1990 | CN1010986B Photo-hardening electro static printing mould with improved umkehr effect and electricity erasing ability |
| 12/25/1990 | US4980260 Multi-color image-forming method with microcapsule positive diazotype color image formation and positive light-solubilizing color image formation |
| 12/20/1990 | CA2019058A1 Multilayer imaging article for transfer color proofing |
| 12/20/1990 | CA2019021A1 Positive or negative working overlay color proofing system having photoresistive layer |
| 12/19/1990 | EP0403128A2 Pre-press proofing method |
| 12/18/1990 | CA1277862C Single-layer antihalation system |
| 12/14/1990 | CA2016751A1 Pre-press proofing method |
| 11/22/1990 | EP0398502A2 Method and system for providing a colour match between a scanned colour test pattern and the respective printout of a colour printer, using a closed control loop |
| 11/20/1990 | US4971941 Multilayer imaging sheet, photosensitive microcapsules, dyes, photohardenable composition |
| 11/20/1990 | US4971893 Element containing lower gloss protective covering and a pre-press color proof |
| 11/07/1990 | EP0221139B1 Method for detecting blank frames in a photographic color printer |
| 11/01/1990 | WO1990012685A1 Index marking article for superposed sheets |
| 10/23/1990 | US4965172 Humidity-resistant proofing toners with low molecular weight polystyrene |
| 10/18/1990 | WO1990012342A1 A near infrared laser absorbing coating and method for using same in color imaging and proofing |
| 10/16/1990 | US4963462 Positive working, peel developable, color proofing system having two photosensitive layers |
| 10/10/1990 | EP0183133B1 Method and apparatus for the production of photographic pictures by point-by-point illumination |
| 10/09/1990 | US4962314 Image transfer apparatus |
| 10/03/1990 | EP0390104A2 Adjustable dot gain simulation for color proofing |
| 10/03/1990 | EP0389691A1 Process for the formation of multicolour colloid patterns |
| 10/03/1990 | CN1045870A Dispersed laser speckle contact screen and optical system for its manufacture |
| 10/02/1990 | US4960677 Dry nonelectroscopic toners surface coated with organofunctional substituted fluorocarbon compounds |
| 09/30/1990 | CA2013211A1 Adjustable dot gain simulation for color proofing |
| 09/26/1990 | CN1045652A Photosensitive reproduction element containing a photorelease layer |
| 09/25/1990 | US4959790 Apparatus and method for producing color corrected reproduction of colored original images |
| 09/25/1990 | US4959712 Method and apparatus for color adjustment |
| 09/11/1990 | US4956718 Tonal conversion method for pictures |
| 09/05/1990 | EP0385466A2 Photosensitive reproduction element containing a photorelease layer |
| 09/05/1990 | EP0221133B1 Method of detecting and printing color photographic images exposed with narrow band illuminant |
| 09/03/1990 | CA2010619A1 Photosensitive reproduction element containing a photorelease layer |
| 08/30/1990 | DE3906335A1 Support for a recording material, and a process for the production thereof |
| 08/23/1990 | WO1990009619A1 Device for producing separation films for print reproduction |
| 08/21/1990 | US4951132 Color scanner having monitoring apparatus capable of displaying a plurality of originals in parallel |
| 08/21/1990 | US4950577 Multilayer; removal transparent carrier sheet |
| 08/16/1990 | EP0382044A2 Electronic camera system with detachable printer |
| 08/15/1990 | CN1044618A Printing method and printed product |
| 08/14/1990 | US4948693 Containing naphthoquinone diazide compound and an adhesive layer comprising polyvinyl acetate;, laminating |
| 08/14/1990 | US4947746 Print control strip |
| 08/10/1990 | CA2007744A1 Electronic camera system with detachable printer |
| 08/09/1990 | WO1990008657A1 Novel printing method and printed product |
| 08/08/1990 | CN1044544A Method for color image processing |
| 07/31/1990 | US4945020 Mixture of polymierc binder, photooxidant, leuco dye, halogenated hydrocarbon and plasticizer |
| 07/24/1990 | US4943517 Color separation for photolithography |
| 07/19/1990 | DE3936860A1 Auxiliary equipment for photocopier printing plate scanning - enables print density to be automatically controlled for individual items of range of input documents during copying |
| 07/18/1990 | EP0378448A2 Colour image processing |
| 07/17/1990 | US4942460 Method of and apparatus for recording a halftone dot color image on a color photosensitive material |
| 07/10/1990 | US4941057 Digital image proofing |
| 07/10/1990 | US4941039 Color image reproduction apparatus having a least squares look-up table augmented by smoothing |
| 07/10/1990 | US4941038 Method for color image processing |
| 07/04/1990 | EP0376209A2 Under-color removal method and device therefor |
| 07/04/1990 | EP0375733A1 Production of formes using washable image carriers |
| 07/03/1990 | US4939029 Compressible temporary support for transfer layer |
| 06/28/1990 | WO1990007145A1 Humidity-resistant proofing toners with low molecular weight polystyrene |
| 06/27/1990 | EP0221113B1 Digital exposure adjustment for photographic images |
| 06/26/1990 | US4937676 Electronic camera system with detachable printer |
| 06/26/1990 | US4937168 Solid transfer negative- or positive-working color proofing method on diverse paper stocks |
| 06/22/1990 | CA2006216A1 Humidity-resistant proofing toners with low molecular weight polystyrene |
| 06/20/1990 | EP0373532A2 Process for making a reverse image using a pigmented peel apart photosensitive element contaning a photoinhibitor |
| 06/19/1990 | US4935331 Photopolymerizable and colored layer on support |
| 06/13/1990 | EP0372390A2 Method of and apparatus for establishing reference point on gradation correction curve |
| 06/12/1990 | US4933258 Use of photosensitive image receiving sheet material in imaging transfer process |
| 06/12/1990 | CA2004956A1 Process for making a reverse image using a pigmented peel-apart photosensitive element containing a photoinhibitor |
| 06/12/1990 | CA1270141A1 Photographic materials and colour proofing system |
| 06/05/1990 | US4931861 Method of and apparatus for correcting color pattern in multicolor process |
| 05/29/1990 | US4930007 Digital 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 |
| 05/29/1990 | US4929532 Multilayer laminate using polyvinyl acetate adhesive |