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。