公开(公告)号：US5609986A

公开(公告)日：1997-03-11

申请号：US638068

申请日：1996-04-25

申请人： Rino Feduzi ,  Cristina Soncini ,  Antonella Celada ,  Salvatore Selvaggio ,  Ivo Zullo

发明人： Rino Feduzi ,  Cristina Soncini ,  Antonella Celada ,  Salvatore Selvaggio ,  Ivo Zullo

IPC分类号： G03C1/04 ,  G03C1/06 ,  G03C1/295 ,  G03C1/76

CPC分类号： G03C1/04 ,  G03C1/061

摘要： The present invention relates to a process for improving the ageing properties of a silver halide photographic element, free of photolytically generated latent images, comprising a support bearing at least one light-sensitive silver halide emulsion layer and at least one light-insensitive layer, the silver halide light-sensitive emulsion layer including negative acting surface latent image-type silver halide grain in association with a contrast promoting agent and a hydrazine compound, by adding a total amount of at least 0.40 grams per square meter of dextran to at least said light-sensitive silver halide emulsion layer and/or to at least said light-insensitive layer.

摘要翻译： 本发明涉及一种改善不含光解产生的潜像的卤化银照相元件的老化性能的方法，其包括至少一个感光卤化银乳剂层和至少一个不透光层的载体， 通过将至少0.40克/平方米的葡聚糖的总量与对比促进剂和肼化合物相结合，将至少含有所述光的至少所述光的卤化银感光乳剂层包括负性表面潜像型卤化银颗粒 感光卤化银乳剂层和/或至少所述不透光层。