发明授权
US5221593A Silver halide photographic materials containing novel nucleating agent 失效
含有新型核化剂的银色摄影材料

Silver halide photographic materials containing novel nucleating agent
摘要:
The improved silver halide photographic material contains a novel nucleating compound that is useful either as a contrast increasing agent in light-sensitive material for use in photochemical processes or as a foggant in direct positive light-sensitive materials.
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