METHOD AND DEVICE FOR PRELIMINARILY GRINDING METALLIC PLATE FOR PRINTING PLATE

摘要

PROBLEM TO BE SOLVED: To prevent a metallic plate for a printing plate from being unevenly ground even in the case of preliminarily grinding it by a non-woven fabric roller for a long time in order to obtain a high preliminary grinding effect. SOLUTION: In the case of preliminarily grinding the traveling web-like metallic plate for the printing plate 12 by the non-woven fabric roller 14 including abrasive, water supply control to a surface to be worked is performed according to water supply quantity and water supply quantity distribution with respect to the unit length of the roller 14. Since the water supply quantity is set to 0.1 to 20 L/min.cm and the water supply quantity distribution is set to <=±30%, the water whose quantity is appropriate for grinding is supplied to the surface to be worked in a nearly equalized state.