| 摘要 |
<p>A photopolymer printing plate precursor comprising in this order a photosensitive coating and a protective coating on a support, wherein said photosensitive coating comprises a composition that is photopolymerizable upon absorption of light, said composition comprising a binder, a polymerizable compound, a radical stabilizer, a sensitizer and a photoinitiator, characterized in that the photoinitiator is a hexaaryl-bisimidazole compound and the protective layer has a dry coating weight from 0.5 to less than 2.0 g/m<2> and contains at least one type of poly(vinyl alcohol), having a saponification degree less than 93 mol%, and a poly(vinyl pyrrolidone) in an amount from 0 to 10 parts by weight of the poly(vinyl alcohol), is very stable at high pre-heat temperatures.</p> |
