| 摘要 |
PROBLEM TO BE SOLVED: To provide a negative photosensitive lithographic printing plate that ensures high printing durability in an image part and sufficient scumming resistance in a non-image part.SOLUTION: The negative photosensitive lithographic printing plate includes at least a hydrophilic layer and a photopolymerizable photosensitive layer, sequentially layered on a plastic film support. The hydrophilic layer contains a water-soluble resin and vapor-phase process silica as a single material or together with other inorganic fine particles, and the mass ratio of the total solid content of the vapor-phase process silica and inorganic fine particles to the solid content of the water-soluble resin is from 0.7:1 to 1.5:1. |
