| 摘要 |
PURPOSE:To obtain a lithographic printing plate for electronic photograph, which is excellent in desensitizing property and fatigue resistance in relation to color ink and etchant liquid, resistance to wearing and scratching, and handleability and also has good printing durability and net-point reproducibility as well as free of ground and spot staining, by subjecting the surface of the photo conductive layer of a lithographic printing plate for electronic photograph to the irradiation of corpuscular rays. CONSTITUTION:A corpuscular rays, such as electron rays, ion rays, neutral corpuscular rays, etc., is irradiated onto a photo conductive layer to decompose a resin binder into lower molecules, thereby obtaining the photo conductive layer surface of a low resin binder ratio and also of improved desensitizing property. As a supporter used, a metal such as conductive zinc, iron, copper, etc., or a base paper may be cited. The photo conductive layer provided to the supporter is composed a photo conductive substance (e.g., zinc oxide, titanium oxide, etc.) and a binder (e.g., silicone resin) in a photo conductive substance to binder ratio of 3:1-20:1 by weight. |
