发明名称 |
IMPROVEMENTS RELATING TO ELECTROPHOTOGRAPHY |
摘要 |
A method of forming an image on an electrophotographic film material is described. This involves a contact printing technique and comprises the following steps: (a) placing an image-bearing master in contact with the film; (b) exposing the film to light through the image-bearing master, the exposure being substantially greater than the minimum necessary to render conductive the photo-conductive layer of the electrophotographic film; (c) applying a substantially uniform charge to the surface of the film in the dark immediately after exposure; (d) leaving the film in the dark for a short time so as to allow the charge to migrate selectively; and (e) then developing the image. |
申请公布号 |
DE3373025(D1) |
申请公布日期 |
1987.09.17 |
申请号 |
DE19833373025 |
申请日期 |
1983.05.17 |
申请人 |
COMTECH RESEARCH UNIT LIMITED |
发明人 |
HUMBERSTONE, VICTOR CAREY;FIHSER, JOHN HORACE |
分类号 |
G03G15/05;G03G13/22;G03G13/26;(IPC1-7):G03G13/22 |
主分类号 |
G03G15/05 |
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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