发明名称 |
Silver halide photosensitive materials containing thiourea and analogue derivatives |
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 an acid function. The urea compound is an effective silver halide grain growth-modifying agent. A process for modifying the grain growth of silver halide is also described.
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申请公布号 |
US4749646(A) |
申请公布日期 |
1988.06.07 |
申请号 |
US19870029128 |
申请日期 |
1987.03.23 |
申请人 |
EASTMAN KODAK COMPANY |
发明人 |
HERZ, ARTHUR H.;BURGMAIER, GEORGE J. |
分类号 |
G03C1/015;G03C1/07;(IPC1-7):G03C1/02 |
主分类号 |
G03C1/015 |
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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