Diffusion transfer color processes

Claim 1

IN A PROCESS FOR FORMING MULTICOLOR DYE IMAGES BY DIFFUSION TRANSFER INCLUDING THE STEPS OF EXPOSING A MULTILAYER PHOTOSENSITIVE ELEMENT COMPRISING A SUPPORT HAVING THEREON IN SUPERPOSED RELATIONSHIP A RED-SENSITIVE SILVER HALIDE LAYER, A GREEN-SENSITIVE SILVER HALIDE EMULSION LAYER, AND A BLUE-SENSITIVE SILVER HALIDE EMULSION LAYER, A LAYER CONTIGUOUS WITH EACH OF SAID RED-SENSITIVE GREEN-SENSITIVE, AND BLUE-SENSITIVE SILVER HALIDE EMULSIONS CONTAINING, RESPECTIVELY, A CYAN DYE DEVELOPER, A MAGENTA DYE DEVELOPER, AND A YELLOW DYE DEVELOPER, EACH OF SAID DYE DEVELOPERS BEING A COMPOUND WHICH IS BOTH A DYE AND A SILVER HALIDE DEVELOPING AGENT, APPLYING AN AQUEOUS ALKALINE PROCESSING COMPOSITION TO SAID PHOTOSENSITIVE ELEMENT, EACH SAID DYE DEVELOPER WHERE UNOXIDIZED BEING DIFFUSIBLE IN SAID PROCESSING COMPOSITION, DEVELOPING SAID EXPOSED PHOTOSENSITIVE ELEMENT, OXIDIZING SAID DYE DEVELOPER IN DEVELOPED AREAS THEREBY FORMING IN UNDEVELOPED AREA OF EACH OF SAID SILVER HALIDE EMULSIONS AN IMAGEWISE DISTRIBUTION OF EACH SAID ASSOCIATED DYE DEVELOPER IN UNOXIDED CONDITION, AND TRANSFERING, BY DIFFUSION, AT LEAST PART OF EACH OF SAID IMAGEWISE DISTRIBUTIONS OF SAID DYE DEVELOPERS TO A SUPERPOSED IMAGE-RECEIVING LAYER TO PROVIDE SAID MULTICOLOR DYE TRANSFER IMAGE, THE IMPROVEMENT WHEREIN SAID YELLOW DYE DEVELOPER IS POSITIONED, PRIOR TO SAID EXPOSURE, IN A LAYER WHICH IS SUBSTANTIALLY FREE OF SILVER HALIDE, SAID LAYER OF YELLOW DYE DEVELOPER BEING POSITIONED BETWEEN AND CONTIGUOUS WITH TWO LAYERS CONTAINING BLUESENSITIVE SILVER HALIDE EMULSION, SAID YELLOW DYE DEVELOPER BEING PRESENT DURING EXPOSURE IN A FORM TRANSMITTING BLUE LIGHT WHEREBY BOTH OF SAID BLUE-SENSITIVE SILVER HALIDE EMULSION LAYERS ARE EXPOSED BY BLUE LIGHT DURING SAID EXPOSURE, WHEREBY SAID YELLOW DYE DEVELOPER DIFFUSING INWARDLY TOWARD SAID GREEN SENSITIVE SILVER HALIDE EMULSION IS OXIDIZED BY DEVELOPING OF SILVER HALIDE EXPOSED BY BLUE LIGHT THEREBY PRIVIDING IMPROVED CONTROL OF THE IMAGEWISE DIFFUSION OF SAID DYE DEVELOPERS AND SAID MULTICOLOR TRANSFER IMAGE EXHIBITS IMPROVED COLOR SEPARATION.