发明授权
US4542092A Color diffusion transfer element with spacer layer containing pigment and scavenger for oxidized developing agent 失效
具有间隔层的颜色扩散转移元件含有颜料和用于氧化显影剂的清除剂

Color diffusion transfer element with spacer layer containing pigment
and scavenger for oxidized developing agent
摘要:
A photographic element for a diffusion transfer process is described, comprising at least one support having thereon (1) a layer containing a dye-providing compound capable of releasing or forming a diffusible dye or a precursor thereof as a result of development, (2) a silver halide photographic emulsion layer which is in a complementary color relationship with the dye-providing compound, and (3) a substantially non-sensitive spacing layer between the layers (1) and (2) containing a solid pigment, a hydrophilic colloid, and a nondiffusible compound capable of undergoing a redox reaction with the oxidation product of a silver halide developing agent under an alkaline condition.
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