发明名称 |
Process for forming high-contrast silver images |
摘要 |
Process for forming high-contrast silver images which comprises treating a light-sensitive silver halide photographic material provided with a hydrophilic colloidal layer containing a silver halide emulsion layer coated on a support and containing a tetrazolium compound, after imagewise exposure, with a developer and/or a processing solution prior to the developing, both of which contains at least a nitrogen-containing heterocyclic compound substituted with at least mercapto, thioketone or thioether group.
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申请公布号 |
US4169733(A) |
申请公布日期 |
1979.10.02 |
申请号 |
US19780871348 |
申请日期 |
1978.01.23 |
申请人 |
KONISHIROKU PHOTO INDUSTRY CO LTD |
发明人 |
HABU, TAKESHI;IYTAKA, TATESHI;MATSUO, SYUNJI;NAGATANI, TOSHIO;TAKAHASHI, KAZUO |
分类号 |
G03C5/29;G03C1/06;G03C5/305;(IPC1-7):G03C5/26;G03C5/30 |
主分类号 |
G03C5/29 |
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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