| 摘要 |
PURPOSE:To provide a photosensitive compsn., a photosensitive planographic printing plate and a developing method of the photosensitive planographic printing plate by which such a planographic printing plate is obtd. that has excellent storage stability and excellent plate strength and does not cause contamination of the plate face even after stored for a long time, and excellent developing property can be obtd. without using an org. solvent which causes problems for health such as toxicity and odor during working, problems of safeness such as fire and explosion of gas, or pollution due to waste liquid. CONSTITUTION:This photosensitive compsn. contains a diazo compd. expressed by formula and an aromatic compd. having one sulfonic acid group and at least two carboxylic acid groups or its salt. In formula, R is H, alkyl group or phenyl group, R<1>, R<2>, R<3> and R<4> are H, alkoxy groups or alkyl groups, X is a counter anion, Y is -O-, -S-, -NH- or single bond, A is an aromatic group having an alkali-soluble group, and m and n represents molar ratio m:n. |
