| 摘要 |
Provided is an on-press development type planographic printing master plate that has outstanding ink adhesion and durability, characterized by having a support body, an image recording layer that contains a sensitizing dye, a polymerization initiator and a polymerizable compound, and is able to eliminate unexposed areas by supplying printing ink and/or dampening water on the printing press after exposure, and an overcoat layer that contains a water-soluble resin, in that order. Said overcoat layer is effectively not mixed with the image recording layer. |
