| abstract |
A photosensitive lithographic printing plate material including a support and, superimposed thereon, a negative photosensitive layer, characterized in that the photosensitive layer contains a polymerizable compound with ethylenic double bond, a photopolymerization initiator, a polymer binder, a sensitizing dye and a copolymer having a structural unit represented by the following general formula (1), a structural unit represented by the following general formula (2) and a structural unit represented by the following general formula (3). The provided photosensitive lithographic printing plate material is good in coatability and oxygen barrier layer adherence, having high sensitivity and excels in dot reproducibility, preheat latitude and sludge staining prevention. |