发明授权
US3730717A Photohardenable element with light developable direct writing silver halide overcoating
失效
具有可开发直接写入银色阴极氧化物的光电元件
- 专利标题： Photohardenable element with light developable direct writing silver halide overcoating
- 专利标题（中）： 具有可开发直接写入银色阴极氧化物的光电元件
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申请号： US3730717D申请日： 1969-03-28
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公开(公告)号： US3730717A公开(公告)日： 1973-05-01
- 发明人: FU HUA CHU V , COHEN A
- 申请人： DU PONT
- 专利权人： Du Pont
- 当前专利权人： Du Pont
- 优先权： US81160869 1969-03-28
- 主分类号： G03C1/49
- IPC分类号： G03C1/49 ; G03F7/095 ; G03C5/04 ; G03C1/68 ; G03C11/12
摘要：
AN ELEMENT COMPRISING A LIGHT-HARDENABLE LAYER UPON WHICH IS COATED A PHOTODEVELOPABLE COLLOID SILVER HALIDE EMULSION. THE PHOTODEVELOPABLE SILVER HALIDE EMULSION IS EXPOSED, PHOTODEVELOPED, AND THE IMAGE USED AS A NEGATIVE TO EXPOSE THE UNDERLYING COMPOSITION WHICH IS TREATED TO REMOVE THE COMPOSITION IS UNEXPOSED, BUT NOT IN EXPOSED AREA. PRINTING RELIEFS SUITABLE FOR LETTERPRESS AND OFFSET PRINTING AND PRINTED CIRCUITS CAN BE MADE FROM THE ELEMENTS OF THE INVENTION, USING WASH-OFF PROCEDURES OR THERMAL TRANSFER MEANS WHEREBY UNHARDENED IMAGE AREAS ADHERE TO A PREVIOUSLY OR SUBSEQUENTLY APPLIED RECEPTOR SHEET OR PLATE.
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