| 发明名称 |
Negative working diazo contact film |
| 摘要 |
A photographic element comprising a transparent support and a coating on the support comprising a diazonium composition having a light absorbency of about 45% or less, and a colorant composition, said coating having a light transmission of not more than about 0.1%.
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| 申请公布号 |
US4448873(A) |
申请公布日期 |
1984.05.15 |
| 申请号 |
US19820359460 |
申请日期 |
1982.03.18 |
| 申请人 |
AMERICAN HOECHST CORPORATION |
发明人 |
WALLS, JOHN E.;DHILLON, MAJOR S. |
| 分类号 |
G03F1/12;G03F7/016;(IPC1-7):G03C1/60;G03C1/78 |
主分类号 |
G03F1/12 |
| 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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