发明名称 |
Direct positive silver halide elements |
摘要 |
Direct positive silver halide emulsions are provided which contain fogged silver halide grains with a layered grain structure wherein the external shell of the silver halide grains comprise up to 20 mole % of silver iodide based on the silver halide of the shell. The emulsions show improved sensitivity and produce images of improved maximum density.
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申请公布号 |
US4059450(A) |
申请公布日期 |
1977.11.22 |
申请号 |
US19730417499 |
申请日期 |
1973.11.20 |
申请人 |
AGFA-GEVAERT N.V. |
发明人 |
VANASSCHE, WILLY JOSEPH;PATTYN, HERMAN ALBERIK;MOISAR, ERIK;KLOTZER, SIEGHART |
分类号 |
G03C1/485;(IPC1-7):G03C1/36;G03C1/28 |
主分类号 |
G03C1/485 |
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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