| abstract |
(57) [Summary] [PROBLEMS] By recording using an infrared laser, Direct recording from digital data, when used as a lithographic printing plate precursor, high sensitivity, excellent image area curability even under low exposure conditions, and heat-mode negative image recording material with excellent printing durability I will provide a. (A) An image recording material containing an infrared absorber that is a cyanine dye in which at least one of the substituents on the nitrogen atoms at both ends forms a ring structure, Further, it comprises (B) a radical generator and (C) a radical polymerizable compound, and is characterized by being recordable by infrared irradiation. In such a cyanine dye, at least one of the substituents on the nitrogen atoms in the heterocyclic ring at both ends forms a ring structure, and the methine chain of the cyanine dye at the time of being excited by exposure and heating. It is preferable to have a function of suppressing rotation. |