| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a photosensitive lithographic printing plate material having high sensitivity and good storage stability and capable of making a lithographic printing plate excellent in printing durability. <P>SOLUTION: The photosensitive lithographic printing plate material is obtained by sequentially providing as coatings a photosensitive layer comprising a photosensitive composition containing (a) an alkali-soluble polymer binder, (b) a monomer having an ethylenically unsaturated double bond, (c) a hexaarylbiimidazole derivative, (d) a spectral sensitizer and (e) a mercapto compound and an oxygen blocking layer consisting primarily of polyvinyl alcohol on a support having a hydrophilic surface, wherein a polyamine compound containing two or more nitrogen atoms represented by general formula (1) is contained in a coating liquid for the photosensitive layer in a range of 0.2-4.0 mass%. <P>COPYRIGHT: (C)2009,JPO&INPIT |
