| abstract |
(57) [Summary] A lithographic plate that can record from digital data using an infrared laser, suppresses ablation during laser scanning during recording, has a high strength of the formed image portion, and has excellent printing durability. Provided is a negative image recording material capable of forming a printing plate. SOLUTION: (A) a polymer compound which has at least one group represented by the following general formulas (1) to (3) in a side chain and is insoluble in water and soluble in an aqueous alkali solution; It contains a conversion agent and a compound that generates radicals by heat mode exposure to light having a wavelength that can be absorbed by the photothermal conversion agent (C) and (B), and is capable of image recording by heat mode exposure. Heat mode negative image recording material. In the formula, R l to R ll represent a monovalent organic group, X, Y, Z represents an oxygen atom, a sulfur atom, an -N-R 12 or a phenylene group, R 12 represents a hydrogen atom or a monovalent organic group. Embedded image |