| 摘要 |
PROBLEM TO BE SOLVED: To provide a photosensitive composition applicable to a positive- working original plate of a planographic printing plate capable of direct recording from digital data of a computer or the like by recording with a laser, excellent in image forming property and having such good preservability as to cause no change in printing stains and printing resistance even after long-term storage. SOLUTION: The photosensitive composition comprises a polymer having a hydroxyaryl group in a side chain, a thermally decomposable onium salt and an IR absorbent. |
