| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a photosensitive composition which is free from variation in sensitivity, excels in adhesion to a support and in scratch resistance, is also free from a banding phenomenon, has high printing durability and does not require an overcoat layer, and a lithographic printing original plate. <P>SOLUTION: The photosensitive composition contains an alkali-soluble copolymer (A) having a structural unit represented by a general formula (I), a polymerizable compound (B), a polymerization initiator (C) and an infrared absorbent (D), wherein R<SP>1</SP>represents H or methyl; R<SP>2</SP>represents H or cyano; X represents -OCO- or -COOC<SB>n</SB>H<SB>2n</SB>OCO- (n represents an integer of 1-5); and m represents 0 or 1. <P>COPYRIGHT: (C)2007,JPO&INPIT |
