申请人:Minnesota Mining and Manufacturing Company
公开号:US05212056A1
公开(公告)日:1993-05-18
A multilayer silver halide color photographic element comprising at least one blue-sensitive silver halide emulsion layer comprising a blue spectral sensitizing dye and a supersensitizing amount of a disulfide compound of formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4, equal or different, each represents a hydrogen atom or a lower alkyl group, R.sub.5 represents a hydrogen atom, a formyl group or an acetyl group, R.sub.6 and R.sub.7, equal or different, each represents a hydrogen atom or a lower alkyl group, or R.sub.6 and R.sub.7 represent the elements needed to complete an unsaturated cyclic nucleus. The combination provides a blue-sensitive silver halide emulsion layer having high sensitivity, low fog and good resistance against fading of the latent image.
一种多层次的银卤化物彩色感光元件,包括至少一层蓝色敏感的银卤化物乳剂层,其中包括一种蓝色光谱敏化染料和一定量的式为##STR1##的二硫化物化合物,其中R.sub.1,R.sub.2,R.sub.3和R.sub.4,相同或不同,分别表示氢原子或低烷基基团,R.sub.5表示氢原子、甲酰基或乙酰基,R.sub.6和R.sub.7,相同或不同,分别表示氢原子或低烷基基团,或R.sub.6和R.sub.7表示完成不饱和环核所需的元素。该组合提供了一种具有高灵敏度、低雾度和良好抗潜影图像褪色的蓝色敏感银卤化物乳剂层。