| 摘要 |
A photographic color diffusion transfer process comprising the steps: (1) image-wise photo-exposing a photographic material which contains on a support at least one waterpermeable silver halide emulsion layer, the silver halide of which essentially consists of silver chloride, and in operative contact therewith at least one non-diffusing ballasted dye or dye precursor which when contacted with an aqueous alkaline liquid remains immobile in a waterpermeable colloid layer, and in reduced state is capable of releasing (a) dye(s) or dye precursor(s), (2) treating the photographic material with an alkaline processing liquid in the presence of a silver halide developing agent, (3) maintaining said photographic material in contact with the alkaline processing liquid in the presence of said developing agent to release said dye or dye precursor in diffusible state; and (4) transferring at least a portion of said released dye or dye precursor to a non-light-sensitive layer and carrying out the development in the presence of a substance providing iodide ions, increasing speed and reducing color fog.
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