Photographic diffusion transfer process

Claim 1

A PROCESS OF FORMING SILVER DIFFUSION TRANSFER IMAGES WHICH COMPRISES THE STEPS OF DEVELOPING AN EXPOSED PHOTOSENSITIVE SILVER HALIDE EMULSION BY CONTACT OF SAID EMULSION WITH AN AQUEOUS ALKALINE PROCESSING SOLUTION WHICH INCLUDES A SILVER HALIDE DEVELOPING AGENT AND A SILVER HALIDE SOLVENT; CONTACTING UNEXPOSED AND UNDEVELOPED SILVER HALIDE THEREIN WITH SAID SILVER HALIDE SOLVENT AND FORMING THEREBY AN IMAGEWISE DISTRIBUTION OF SOLUBLE SILVER COMPLEX IS UNEXPOSED AREAS OF SAID EMULSION, AS A FUNCTION OF THE POINT-TO-POINT DEGREE OF EXPOSURE THEREOF; TRANSFERRING FROM SAID EMULSION, AT LEAST IN PART, BY IMBITION, SAID IMAGEWISE DISTRIBUTION OF SOLUBLE SILVER COMPLEX TO AN IMAGE-RECEIIVING LAYER CONTAINING SILVER PRECIPITATION NUCLEI POSITIIONED IN SUPERPOSED RELATIONSHIP WITH SAID EMULSSION, SAID IMAGE-RECEIVING LAYER CONTAINING DEACETYLATED CHITIN IN A CONCENTRATION SUFFICIENT TO RENDER SAID IMAGE-RECEIVING LAYER SUBSTANTIALLY WATER INSOLUBLE UPON REACTION OF SAID DACETYLATED CHITIN WITH SAID AQUEOUS ALKALINE PROCESSING SOLUTION; AND THERE PRECIPITATING SAID SILVER COMPLEX TO PROVIDE THEREBY A SILVER TRANSFER IMAGE.