| abstract |
PROBLEM TO BE SOLVED: To provide a photopolymerization initiator, a photopolymerization composition and a lithographic printing plate capable of writing at around 488 nm or 532 nm, forming an image having good resolution and sensitivity, and having good storage stability. Providing photosensitive materials. SOLUTION: Barbituric acid or thiobarbituric acid-based methine, azo represented by general formulas (A) to (D), Photopolymerization initiator containing azomethine and dimethine sensitizing dye and radical generator, photopolymerization composition containing this photopolymerization initiator and compound having ethylenically unsaturated bond, and this photopolymerization initiator and ethylenically unsaturated bond A photosensitive material for preparing a lithographic printing plate, comprising a compound having the formula: and a binder component. |