发明名称 |
Photographic masks for tonal correction. |
摘要 |
<p>Process for production of photographic masks for tonal correction by dry dot etching comprising exposing a mask film, e.g. positive film, behind a film combination of half-tone positives and negatives that contains at least one pair of a positive and a negative of the same color separation, said pair being separated from one another by a spacer film or color separation film.</p> |
申请公布号 |
EP0244241(A2) |
申请公布日期 |
1987.11.04 |
申请号 |
EP19870303850 |
申请日期 |
1987.04.29 |
申请人 |
E.I. DU PONT DE NEMOURS AND COMPANY |
发明人 |
DUSDIEKER, GERHARD FRITZ DIS HARD AND SOFTWARE |
分类号 |
G03F1/00;G03C5/08;G03F1/02;G03F3/06;G03F3/08;(IPC1-7):G03F3/06 |
主分类号 |
G03F1/00 |
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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