发明授权
- 专利标题： Method of engraving printing plates of forms by means of energy beams, especially laser beams
- 专利标题（中）： 通过能量束，特别是激光束雕刻印版的方法
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申请号： US600804申请日： 1975-07-31
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公开(公告)号： US4108659A公开(公告)日： 1978-08-22
- 发明人: Mamiliano Dini
- 申请人： Mamiliano Dini
- 申请人地址： DEX
- 专利权人： European Rotogravure Association
- 当前专利权人： European Rotogravure Association
- 当前专利权人地址： DEX
- 优先权： DEX2241849 19720825
- 主分类号： B23K26/00
- IPC分类号： B23K26/00 ; B41C1/05 ; G03F5/20 ; G03F7/20 ; G03C5/00 ; G03C5/04
摘要：
A process for engraving printing surfaces with unmodulated energy beams by interposing a variable reflectivity mask between the energy beam source and the printing surface. The local reflectivity of the mask varies in correspondence with the tone graduation of the original to be printed and may be formed by conventional photographic or the like techniques directly on the printing surface or on a substrate carrier through which the energy beam is passable.