发明名称 |
Silver halide photosensitive materials containing thiourea and analogue compounds |
摘要 |
A photographic silver halide emulsion comprising a 1,1,3,3-tetrasubstituted middle chalcogen urea compound is described wherein at least one substituent comprises a nucleophilic center. The urea compound is an effective chemical sensitizing agent. A process for chemically sensitizing silver halide is also described.
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申请公布号 |
US4810626(A) |
申请公布日期 |
1989.03.07 |
申请号 |
US19880174576 |
申请日期 |
1988.03.29 |
申请人 |
EASTMAN KODAK COMPANY |
发明人 |
BURGMAIER, GEORGE J.;HERZ, ARTHUR H. |
分类号 |
C07C335/08;G03C1/09;(IPC1-7):G03C1/10 |
主分类号 |
C07C335/08 |
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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