| 摘要 |
<p>Photographic silver halide colour materials and process for the production of dye images by diffusion transfer Photographic material and process suitable for producing by diffusion transfer a colour image and comprising on a support at least two differently spectrally sensitive negative working silver halide emulsion layers (Fig. 3, layers 12, 14 and 16) and having operatively associated with each of said emulsion layers a different non-diffusing dye providing compound that is initially immobile in an alkali-permeable colloid medium and wherefrom by reduction in alkaline medium a dye or dye precursor can be split off in diffusible state, wherein at least one of said negative working silver halide emulsion layers is associated in water-permeable relationship with a visible light-sensitive direct-positive emulsion layer (Fig. 3, layers 13 and 15) whereby interimage effects can be obtained. GV.1146</p> |
