| 摘要 |
PROBLEM TO BE SOLVED: To provide a lithographic printing plate precursor for a thermal negative plate having a photosensitive layer that has high sensitivity and excellent reproducibility in FM screening, and excels in print durability and chemical resistance in a minute image part, safe light property in UV and visible ray regions, and storage stability, and to provide a photosensitive composition for the photosensitive layer.SOLUTION: The photosensitive composition comprises at least: an alkali-soluble resin having a monomer unit expressed by formula (I); at least one silane coupling agent selected from a group represented by the general formulae (II-1) to (II-5); an infrared absorbent; a tetraphenyl borate in which a phenyl group may be substituted; a radical polymerizable initiator excluding a tetraphenyl borate; and a polymerizable compound having an ethylenic double bond. |
