Process for the production of a multicolor image by image-wise dye diffusion transfer

摘要

A process for the production of a multi-color dye image by dye diffusion transfer operating with a photographic multilayer multi-color material containing different non-diffusing dyes or dye precursor compounds that when contacted with an aqueous alkaline liquid remain immobile in an alkali-permeable colloid layer but are capable of being reduced by a developing agent at a rate slower than the reduction of image-wise developable silver halide and in reduced state under alkaline conditions are capable of releasing a diffusible dye or dye precursor moiety, and wherein as illustrated in the drawing dye images with higher color saturation are obtained by more extensive oxidation of developing agent in the image-wise photo-exposed area due to the use in the alkaline processing liquid of a silver halide solvent forming an alkali-soluble and reducible silver complex compound.