Color diffusion transfer process and negative material thereof

Claim 1

A PROCESS FOR PRODUCING A DYE IMAGE ON AN UNSENSITIZED RECEIVING SHEET WHICH COMPRISES EXPOSING TO LIGHT A PHOTOGRAPHIC NEGATIVE COMPRISING A SILVER HALIDE EMULSION OVERCOATED WITH A HARDENED, STRIPPABLE, HYDROPHILIC COLLOID COATING, SAID EMULSION HAVING DISPERSED THEREIN OILY PACKETS CONTAINING A COLOR FORMER, SAID OILY PACKETS BEING PRODUCED BY DISSOLVING THE COLOR FORMER IN A SUBSTANTIALLY WATER INSOLUBLE, LOW MOLECULAR WEIGHT, ORGANIC CRYSTALLOIDAL MATERIAL HAVING A BOILING POINT ABOVE ABOUT 175*C., SAID CRYSTALLOIDAL MATERIAL HAVING A HIGH SOLVENT ACTION FOR THE COLOR FORMER AND FOR THE DYE FORMED THEREFROM AND BEING PERMEABLE TO PHOTOGRAPHIC PROCESSING SOLUTIONS, THE NATURE AND PROPORTIONS OF THE COLOR FORMER AND CRYSTALLOIDAL MATERIAL BEING SO CHOSEN THAT PARTICLES THEROF ARE LIQUID UNDER CONDITIONS OF COATING AND PROCESSING THE EMULSION, SAID COLOR FORMER BEING CAPABLE OF REACTING WITH THE OXIDATION PRODUCTS OF A PRIMARY AROMATIC AMINO COLOR DEVELOPER TO PRODUCE A NON-DIFFUSIBLE DYESTUFF IMAGE SELECTED FROM THE CLASS CONSISTING OF A QUINONEIMINE AND AZOMETHINE DYE IMAGE, SAID COLOR FORMER BEING FREE FROM WATER SOLUBILIZING GROUPS BUT SUFFICIENTLY SOLUBLE IN THE AFORESAID CRYSTALLOIDAL MATERIAL AS TO BE INCORPORATED IN AN OILY PACKET AND CONTAINING SUCH ORGANIC GROUPS THAT AT A PH OF AT LEAST AS HIGH AS 12.5, THE COLOR FORMER BECOMES DIFFUSIBLE IN AN AQUEOUS ME-