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.
本发明涉及一种多色
染料扩散转移生产多色
染料图像的方法,该方法使用具有不同非扩散
染料或
染料前体化合物的照相多层多色材料进行操作。当该材料与
水性碱性液体接触时,这些
染料或
染料前体化合物在碱性渗透胶层中保持不动,但能够被显影剂减少,且减少速度比显影可发展的
银卤化物慢,在碱性条件下处于还原状态,能够释放可扩散的
染料或
染料前体基团。如图所示,由于在碱性处理液中使用了
银卤化物溶剂形成可溶于碱性和可还原的
银络合物,因此可获得具有更高色饱和度的
染料图像,这是由于显影剂在图像区域内更广泛的氧化作用所致。