公开(公告)号：US4086853A

公开(公告)日：1978-05-02

申请号：US704969

申请日：1976-07-13

申请人： Murray Figov ,  Alan Walter Kent ,  Raymond Owen Stephenson ,  Peter Edward Watts

发明人： Murray Figov ,  Alan Walter Kent ,  Raymond Owen Stephenson ,  Peter Edward Watts

IPC分类号： B41C1/10 ,  G01D15/08 ,  G01D15/20

CPC分类号： B41C1/1033

摘要： In addition to having two lithographic layers of complementary lithographic character, an electrically inscribable lithographic printing blank may be provided with a solid but solvent-removable protective surface layer serving to inhibit spurious abrasion of the underlying layer during inscription of the blank and prior handling and storage. To prepare a printing plate from the blank, an electric current is passed between the blank and an electrical stylus so as to inscribe through the protective layer and immediately underlying layer and expose the bottom layer locally, whereafter the protective layer is removed by treatment with solvent to expose the surface of the underlying layer.

摘要翻译： 除了具有互补光刻特征的两个光刻层之外，可电刻印的平版印刷坯料可以设置有固体但是可溶解的可去除的保护表面层，其用于在印刷坯料和预先处理和存储期间抑制下层的杂散磨损 。 为了从坯料制备印版，电流在毛坯和电针之间通过，以便穿过保护层和直接下面的层并且局部暴露底层，然后通过用溶剂处理除去保护层 暴露下层的表面。