| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lithographic printing original plate which enables direct plate-making by a scanning exposure based on digital signals, is superior in printing durability and free from stain of non-image areas. <P>SOLUTION: The lithographic printing plate precursor has an intermediate layer containing a polymer having a structure represented by the formula (I) at its side chain and an infrared laser photosensitive positive recording layer, disposed on a support in this order. In the formula (I), Y represents a linking group linked with a main chain of the polymer, R<SP>1</SP>represents a hydrogen atom or a hydrocarbon group and R<SP>2</SP>represents a divalent hydrocarbon group. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
