| 摘要 |
PURPOSE: To provide a processing method to produce an offset printing plate having a silver image having excellent printing durability during printing and high ink-accepting property. CONSTITUTION: This process of an offset printing plate features that a silver image is used as an ink-accepting material and an image is developed in the presence of a compd. expressed by formula. In formula, R<1> is a hydrogen atom, alkyl group, or alkoxy group and two or more R<1> may be bonded to a benzene ring, and M<+> is alkali metal ion, ammonium ion or cationic org. ion. |
