PURPOSE: To obtain a photosensitive lithographic plate improved in development accelerating property, by forming a photosensitive layer contg. an org. and/or inorg. salt of a diazo resin, a polymer compd. soluble in org. solvents, and a specified compd. on a support.
CONSTITUTION: The photosensitive layer is formed on a support by coating and drying it with a coating soln. obtd. by dissolving or dispersing in an org. solvent, (A) 5W30wt% org. and/or inorg. salt of a diazo resin insoluble or difficultly soluble in water and soluble in org. solvents; (B) 70W95wt% polymer compd. soluble in org. solvents, such as epoxy resin; (C) 0.1W20wt% compd. having the formula as shown in which R is H, 1W2C alkyl, or aryl, and X+1, X+2 are each H, alkali, or alkaline earth metal, or amine; and when needed, 0.5W20wt% basic oil-soluble dye or 10W40wt% pigment.
OOTA TAKATOSHI
EZAKA TERUO
| JPS4945322A | 1974-04-30 |