发明名称 |
Process of forming super high-contrast negative images and silver halide photographic material and developer being used therefor |
摘要 |
An image-forming process developing a previously image-exposed silver halide photographic material with an alkaline developer containing a reductone compound as a main developing agent in the presence of a 1,2,5-thiadiazole compound and/or a 2,1,3-benzothiadiazole compound, and the silver halide photographic material and the photographic developer being used for the process are disclosed. In this case, the 1,2,5-thuiadiazole compound and/or the 2,1,3-benzothiadiazole may be contained in the silver halide photographic material and/or the alkaline developer. Super high-contrast images for photomechanical process having a gamma of higher than 15 and having no pepper and less fog can be obtained.
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申请公布号 |
US5683854(A) |
申请公布日期 |
1997.11.04 |
申请号 |
US19960713188 |
申请日期 |
1996.09.12 |
申请人 |
DAINIPPON INK AND CHEMICALS INC. |
发明人 |
SUEMATSU, KIYOSHI;MURATAKE, HIROAKI;KAJI, HARUHIKO;OBI, NAOKI;KOJIMA, YASUHIKO;SHIGEMITSU, YASUO |
分类号 |
G03C1/06;G03C1/34;G03C5/30;G03C5/305;(IPC1-7):G03C5/305 |
主分类号 |
G03C1/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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