Process for forming direct positive images, direct positive silver halide elements, compositions and compounds as characteristic feature of such processes and elements
申请人:MINNESOTA MINING AND MANUFACTURING COMPANY
公开号:EP0168730A2
公开(公告)日:1986-01-22
Direct positive photographic elements are disclosed employing internal latent image silver halide emulsions associated with developer autoxidation promoter agents constituted by 5 or 6 membered nucleus-containing heterocyclic compounds comprising an azomethine group, whose methine group is substituted with a 5-amino-1,2,4-triazolyl group, and/or copper complex compounds thereof.
Preferably said direct positive photographic elements are multilayer elements comprising internal latent image type type silver halide emulsion layers sensitized to different regions of the visible light and associated with image-dye providing compounds (photographic color couplers).
本发明公开了直接正像照相元件,该元件采用了与显影剂自氧化促进剂有关的内潜像型卤化银乳剂,该促进剂由包含偶氮甲基的 5 或 6 个含核杂环化合物构成,其甲基被 5-氨基-1,2,4-三唑基取代,和/或其铜络合物。
上述直接正像感光元件最好是多层元件,包括对可见光的不同区域感光的内部潜像型卤化银乳剂层,并与提供图像染料的化合物(感光颜色耦合剂)相关联。