| Patents for G03F 3 - Colour separation; Correction of tonal value (5,370) |
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| 03/18/1982 | WO1982000902A1 Method and circuit for partial correction of the drawing during the colour image reproduction |
| 03/10/1982 | EP0047145A2 A method of producing a half-tone reproduction |
| 03/10/1982 | EP0046988A2 Method for lightness imaging |
| 02/23/1982 | US4316951 Multilayer photosensitive element with solvent-soluble layer |
| 02/09/1982 | US4315280 Method for reproducing color separation pictures on a recording material from original pictures |
| 02/02/1982 | US4314274 Digital color correction method |
| 02/02/1982 | CA1117430A1 Automatically control apparatus for color scanner |
| 02/02/1982 | CA1117350A1 Etch-bleaching liquid containing citric acid and alkylene oxide polymer as stabilizing agents for hydrogen peroxide |
| 01/05/1982 | US4309496 Method for optimization of image reproduction processes |
| 12/29/1981 | US4307962 Determination of the standard color values of colors represented on a color monitor |
| 12/08/1981 | US4305094 Color control simulator for a picture reproducing machine |
| 12/08/1981 | US4305093 Method of producing multiple images in a scanning apparatus |
| 12/08/1981 | US4304839 Positive working multilayer photosensitive tonable element |
| 12/08/1981 | US4304836 Surlay proofing method |
| 12/02/1981 | EP0040796A2 Method for the automatic differentiation between image and text or graphic regions on printed originals |
| 11/25/1981 | EP0040320A2 Flat bed scanner system and method |
| 11/24/1981 | US4302235 Producing a multi-color image in polychromatic glass |
| 11/10/1981 | US4300170 Picture outline tracing and recording machine |
| 11/10/1981 | US4299906 Light-sensitive color proofing film with surfactant in a light-sensitive coating |
| 11/10/1981 | US4299893 Film forming layer on a transparent support |
| 11/10/1981 | US4299165 Color separation orientation gauge and method |
| 11/03/1981 | CA1111697A1 Light sensitive copying material containing a diazonium salt polycondensation product in a fish glue binder |
| 10/20/1981 | CA1111130A1 Circuit arrangement for recognizing and adjusting color components |
| 10/13/1981 | US4294909 Photosensitive negative-working toning process |
| 10/06/1981 | US4293873 Method and a device for producing separation images having the effect of being orthogonally screened |
| 10/06/1981 | US4293872 Production of printing blocks or forms |
| 10/06/1981 | US4293216 Method of producing color separation negatives with reduced contrast |
| 10/06/1981 | CA1110096A1 Process for producing a relief original information carrier |
| 09/30/1981 | EP0036418A1 Process for transforming chrominance numerical signals of an orthogonal system of colour coordinates into numerical colour signals and into saturation signals of a system of colour coordinates and transformation circuit. |
| 09/09/1981 | EP0035028A1 Single sheet color proofing diazo oxide system. |
| 09/08/1981 | US4288157 Apparatus for controlling the quality of a picture which is to be processed in a reprapparatus |
| 09/01/1981 | CA1108062A1 Automatically colour printing control device |
| 08/25/1981 | US4286046 Process for preparation of multicolor surprint proofs with silica overcoat |
| 08/25/1981 | US4285759 From a photosensitive film sandwich |
| 08/18/1981 | US4285009 Apparatus for producing corrected color chromatic components |
| 08/12/1981 | EP0033493A1 Method and circuit arrangement for colour recognition |
| 08/06/1981 | WO1981002206A1 Process for obtaining a better image restitution in the reproduction technique |
| 08/06/1981 | WO1981002205A1 Process and device for the partial post-correction of the colour recognition domains in the recognition of colours |
| 08/05/1981 | EP0033106A1 Method for improved picture rendition in reproduction technique |
| 08/04/1981 | US4282308 Negative-working multilayer photosensitive element |
| 07/28/1981 | US4281049 Color separation transparency and process for the preparation thereof |
| 07/28/1981 | CA1105731A1 Apparatus to ensure the quality of printed work |
| 07/08/1981 | EP0031566A1 Photosensitive negative-working tonable element |
| 07/07/1981 | CA1104503A1 Method of and a system for color separation using scanning light beams |
| 06/23/1981 | US4275413 Linear interpolator for color correction |
| 05/27/1981 | EP0029049A1 Method and device for partial electronic retouching during the reproduction of colour images. |
| 05/26/1981 | US4270141 Method and machine for reproducing a color picture by storing signal streams, one entirely, and the rest partially |
| 05/26/1981 | US4269932 Process for preparing an original information carrier for zero-order diffraction |
| 05/19/1981 | CA1101260A1 Presensitized positive-proofing sheet containing a poly-complex oxygenated anion-diazonium salt and a colour layer |
| 05/12/1981 | US4266872 Method of measuring the amount of reduction of a dot film, and device for practicing same |
| 05/12/1981 | CA1100806A1 Continuous-tone dyed diazo imaging elements |
| 05/05/1981 | CA1100347A1 Photographic materials suited for the production of colour separations |
| 04/16/1981 | WO1981001065A1 Process for transforming chrominance numerical signals of an orthogonal system of colour coordinates into numerical colour signals and into saturation signals of a system of colour coordinates and transformation circuit |
| 04/14/1981 | US4262071 Spacer layer |
| 04/07/1981 | US4261011 Color separation production using color recognition circuit |
| 04/07/1981 | US4260673 Presensitized, diazo oxide |
| 04/07/1981 | CA1099039A1 Color dot display |
| 03/24/1981 | US4258125 Method of making hand proofs of color prints |
| 03/19/1981 | WO1981000772A1 Single sheet color proofing diazo oxide system |
| 03/17/1981 | CA1097726A1 Apparatus and method for producing images on sensitized surfaces |
| 03/17/1981 | CA1097529A1 Light sensitive film composition containing a diazo material and a linear copolyester adhesion promoter |
| 03/10/1981 | US4255761 Apparatus for mixing image signals to obtain a printing master |
| 03/10/1981 | CA1097109A1 Device for producing variable colors |
| 03/03/1981 | US4254425 Electric discharge printing device having a laminar stylus |
| 02/17/1981 | US4251622 Containing a dye, an aryl ketone sensitizer, and an n-substituted polyamide or a vinyl acetate polymer of high molecular weight |
| 02/10/1981 | US4250522 Color facsimile previewer |
| 01/27/1981 | US4247619 Negative-working multilayer photosensitive tonable element |
| 01/13/1981 | CA1093368A1 Radiation-sensitive copying composition containing carboxylic acid ester or amide acetal |
| 01/07/1981 | EP0020494A1 Reproductive procedure for original models, which are explored in as much as concerns their degree of coloring, by a three component method. |
| 01/06/1981 | US4243741 Hexaarylbiimidazole |
| 12/24/1980 | WO1980002819A1 Laser device for manufacturing printing plates |
| 12/23/1980 | US4241153 Process for making color separation negatives and positives for use in multi-color printing |
| 12/10/1980 | EP0019896A2 Colour testing foil |
| 12/09/1980 | US4238561 Diffusion of a nonvolatile compound from the tonable layer and dusting |
| 12/02/1980 | US4237481 Image reproduction using sharp and unsharp signals |
| 11/27/1980 | WO1980002607A1 Switching process and device by partial electronic retouching during the reproduction of colour images |
| 11/26/1980 | EP0019270A2 Multicolour print and process for the manufacture of the printing forms for this print |
| 11/25/1980 | US4236174 Color correction of image display |
| 11/18/1980 | CA1089771A1 Apparatus for producing corrected color chromatic components |
| 11/11/1980 | CA1089279A1 Multilayer photosensitive tonable element and process for image reproduction |
| 11/04/1980 | US4232219 Photosensor |
| 10/21/1980 | US4229520 Photo-polymerization and development process which produces dot-etchable material |
| 10/21/1980 | US4229518 Photohardenable elements with a non-tacky matte finish |
| 10/15/1980 | EP0017563A1 Object for the manufacture of visual aids comprising a photopolymerisable composition on a transparent carrier |
| 09/09/1980 | US4222077 Analog-digital conversion method, and a picture reproduction method using the same |
| 09/02/1980 | US4220700 Mordants, anionic dyes |
| 08/19/1980 | US4217822 Color printing method |
| 08/05/1980 | US4216495 Electro-optical scanning |
| 07/22/1980 | CA1082109A1 Method for digital color correction in color picture recording systems |
| 06/17/1980 | CA1079565A1 Dot-etchable photopolymerizable elements and image reproduction process |
| 06/11/1980 | EP0011722A2 Process and device for the digital control of the making of colour reproductions |
| 05/20/1980 | US4204223 Method and apparatus for making color corrections in the manufacture of printing plates |
| 05/20/1980 | US4203770 Negative tonable photohardenable element |
| 05/20/1980 | US4203765 Hydrogen peroxide, citric acid and an alkylene oxide polymer to improve stability |
| 05/20/1980 | US4203360 Method for silk-screen printing |
| 04/30/1980 | EP0010323A1 A method for producing orthogonally screened colour separation images |
| 04/17/1980 | WO1980000753A1 Reproductive procedure for original models which are explored in as much as concerns their defree of coloring,by a three component method |
| 04/01/1980 | CA1074703A1 Document copying apparatus with programmed computation means |
| 04/01/1980 | CA1074611A1 Compact apparatus for making large color printing records |
| 03/25/1980 | US4194839 Circuit arrangement for recognizing and adjusting color components |