Photographic processes and materials
Abstract
Abstract PHOTOGRAPHIC SILVER HALIDE EMULSIONS HAVE INCORPORATED THEREIN A FIRST COLORLESS, NON-DIFFUSIBLE PHOTOGRAPHIC SECOND COUPLER, UPON REACTION WITH OXIDIZED COLOR DEVELOPER, FORMS A NON-DIFFUSIBLE DYE IMAGE; A SECOND COLORED, NON-DIFFUSIBLE PHOTOGRAPHIC COUPLER HAVING AN AZO CHROMOPHORIC GROUP IN ITS COUPLING POSITION, WHICH SECOND COUPLER, UPON REACTION WITH OXIDIZED COLOR DEVELOPING AGENT, FORMS DYE AND RELEASES THE AZO GROUP; AND, A THIRD COLORLESS, NON-DIFFUSICBLE PHOTOGRAPHIC COUPLER HAVING A MONOTHIO GROUP IN ITS COUPLING POSITION, WHICH THIRD COUPLER, UPON REACTION WITH OXIDIZED COLOR DEVELOPER, FORMS A DYE AND A DIFFUSCIBLE MERCAPTAN DEVELOPMENT INHIBITOR. THE EMULSIONS MAY HAVE INCORPORATED THEREIN FINELY DIVIDED LIQUID PARTICLES OF WATER INSOLUBLE COUPLER SOLVENT, WHICH PARTICLES CONTAIN THE INDICATED COMBINATION OF COUPLERS. THE EMULSIONS MAY BE PREPARED BY DISPERSING THE COLORLESS, COLORED AND DIR COUPLERS IN PHOTOGRAPHIC COUPLER SOLVENT, AND DISPERSING THE SOLUTIO OF COUPLER SOLVENT INTO THE EMULSIONS.
Inventors
- 👤 Nicholas H Groet
- 👤 Wilho M Salminen
Bibliographic Details
Claims Analysis
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