发明名称 |
High contrast photographic materials. |
摘要 |
<p>Pepper fog may be reduced in high contrast photographic materials comprising silver halide emulsion in association with a hydrazine by the presence of at least 0.001 mole per mole of silver halide of a water-soluble bromide and/or water-soluble chloride. Suitable water-soluble bromides and chlorides are alkali metal bromides and chlorides which are advantageously added to the silver halide emulsion after physical ripening and washing.</p> |
申请公布号 |
EP0285308(A2) |
申请公布日期 |
1988.10.05 |
申请号 |
EP19880302513 |
申请日期 |
1988.03.22 |
申请人 |
MINNESOTA MINING AND MANUFACTURING COMPANY |
发明人 |
HALL, KEVIN PETER |
分类号 |
G03C1/035;G03C1/005;G03C1/06;G03C1/08 |
主分类号 |
G03C1/035 |
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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