公开(公告)号：US4052937A

公开(公告)日：1977-10-11

申请号：US597989

申请日：1975-07-22

申请人： Leslie Edward Lawson ,  John Sleeman Rogers ,  Peter Edward Watts

发明人： Leslie Edward Lawson ,  John Sleeman Rogers ,  Peter Edward Watts

IPC分类号： B41F7/24 ,  B41F33/00 ,  B41M1/06 ,  B41L25/02 ,  G01N21/48

CPC分类号： B41F33/0054 ,  B41F7/24 ,  B41M1/06

摘要： The amount of water present on a lithographic printing plate during printing is determined by measuring the amount of water present on a surface which is other than that of the printing plate but which carries an amount of water related to the amount of water present on the printing plate. The surface upon which the measurement is made may be the surface of a control pad mounted on the printing roller in the gap between opposite ends of the printing plate, the surface of one of the rollers of the damp train applying water to the printing plate, or the surface of an auxiliary roller contacting one of the rollers of the damp train applying water to the printing plate. The amount of water subsequently applied to the printing plate may be regulated in dependence upon the amount of water determined as being already present on the printing plate.

摘要翻译： 在印刷过程中平版印刷版上存在的水的量通过测量与印刷版不同的表面上存在的水的量来确定，但是与印刷中存在的水的量相关的水的量 盘子。 在其上进行测量的表面可以是安装在印刷辊上的控制垫的表面，该印刷辊在印版的相对端之间的间隙中，湿纸巾的一个辊的表面向印刷板施加水， 或者将辅助辊的表面接触到将印刷板施加水的湿织物的辊之一。 随后施加到印版的水的量可以根据确定为已经存在于印版上的水的量来调节。

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。