公开(公告)号：US06573021B2

公开(公告)日：2003-06-03

申请号：US10040672

申请日：2002-01-07

申请人： Julie Baker ,  Ian Barford ,  Philip J. Coldrick ,  Dawn J. Jenkins ,  Roger H. Piggin

发明人： Julie Baker ,  Ian Barford ,  Philip J. Coldrick ,  Dawn J. Jenkins ,  Roger H. Piggin

IPC分类号： G03C1295

CPC分类号： G03C1/061 ,  G03C2001/108 ,  G03C2200/42

摘要： The invention relates to an ultrahigh contrast photographic material comprising a support bearing a silver halide emulsion layer, containing a combination of two or more hydrazide nucleating agents in the emulsion layer and/or a hydrophilic colloid layer, characterized in that the combination comprises a nucleating agent(s) of formulae (I) and/or (I) with a nucleator of formula (III), in which the nucleating agent of formula (I) comprises (a) two nicotinamide moieties, which may be the same or different, which are linked by a linking group, and (b) a hydrazide moiety linked to only one of those nicotinamide moieties; the nucleating agent of formula (II) comprises a dimeric molecule comprising two monomers linked by a linking group, each monomer of which (a) may be the same or different and (b) comprises a hydrazide moiety and a nicotinamide moiety; and the nucleating agent of formula (III) comprises an aryl sulfonamido aryl hydrazide. The combination of nucleating agents show less sensitivity to variation in the development conditions than do the individual nucleating types, leading to significant improvements in processing robustness with less change in image quality with processing and tolerance to a wider range of developer solutions.

摘要翻译： 本发明涉及一种超高对比度照相材料，其包含载体，该载体含有卤化银乳剂层，其在乳剂层和/或亲水胶体层中含有两种或更多种酰肼成核剂的组合，其特征在于，所述组合包含成核剂 式（I）的成核剂包含（a）两个可以相同或不同的烟酰胺部分，其可以相同或不同，其中式（I）和/或（I） 通过连接基团连接，和（b）仅与那些烟酰胺部分中的一个连接的酰肼部分; 式（II）的成核剂包含包含通过连接基团连接的两个单体的二聚体分子，其每个单体（a）可以相同或不同，（b）包含酰肼部分和烟酰胺部分; 并且式（III）的成核剂包括芳基亚磺酰氨基芳基酰肼。成核剂的组合对显影条件的变化的敏感性比单独的成核类型显示更小的灵敏度，导致加工鲁棒性的显着改善，图像质量的变化较小 具有处理和容忍更广泛的开发人员解决方案。