| abstract |
PROBLEM TO BE SOLVED: To provide a positive type image forming material for an infrared laser which has improved image forming properties of a recording layer, is excellent in printing durability, and has good stability in sensitivity to the concentration of a developing solution. SOLUTION: (A) Monomer (a-1) is provided on a support. To at least one of (a-3) as a copolymer component; A layer containing at least 50% by weight of a copolymer containing at least 50% by mole of a copolymer containing at least 50% by weight of a copolymer containing at least 50% by weight of an alkali aqueous solution having a phenolic hydroxyl group; It contains a compound that absorbs light and generates heat. The monomer includes (a-1) a monomer having a sulfonamide group having at least one hydrogen atom bonded to a nitrogen atom, (a-2) a monomer having an active imino group represented by the following formula, and (a-3) A monomer selected from acrylamide acrylate having a phenolic hydroxyl group, hydroxystyrene and the like. Embedded image |