| abstract |
Disclosed is a negative working light sensitive planographic printing plate material comprising a support and provieded thereon, a light sensitive layer containing a spectral sensitizing agent, a polymerization initiator, a polymerizable compound, and a polymer as a polymeric binder, wherein the polymer has in the molecule a monomer unit with a polymerizable group and at least one of a polyvinyl ether chain, a polyvinyl pyrrolidone chain and a polyvinyl caprolactam chain. |