| 摘要 |
PURPOSE: To provide photosensitive composition for a lithographic printing plate excellent in the visible image property, aging stability, and bright room workability. CONSTITUTION: A photosensitive composition for a lithographic plate contains a ziazo resin, an organic polymer compound, and a blue dye. The ziazo resin contains a compound expressed by formula I or II, and the photosensitive compound contains a compound expressed by the formula III. In formulas I and II, X indicates organic anion, R<1> -R<3> indicate the hydrogen atom, alkyl group, alkoxy group, or hydroxy group, R<4> indicates the hydrogen atom, alkyl group, or phenyl group, and (n) indicates an integer of 1 or more. In the formula II, A indicates the group introduced from an aromatic compound having the carboxyl group and/or hydroxyl group. |
