Patent ID: 7144678
Filing Date: 2006-12-05
Classification: B41C,G03F,Y10S

Abstract:
1. A lithographic printing plate precursor comprising: an aluminum support; and a photosensitive image-forming layer comprising a light-heat converting agent, a binder resin and a fluoroaliphatic group-containing copolymer, in which the photosensitive image-forming layer can increase or decrease in the solubility in an alkaline developer upon exposure to laser beams, wherein the fluoroaliphatic group-containing copolymer contains a repeating unit corresponding to monomer (i) below, a repeating unit corresponding to monomer (ii) below, and a repeating unit corresponding to monomer (iii) below: (i) a fluoroaliphatic group-containing monomer represented by formula (I) below, (ii) at least one of a poly(oxyethylene) acrylate and a poly(oxyethylene) methacrylate, and (iii) at least one of a poly(oxypropylene) acrylate and a poly(oxypropylene) methacrylate, wherein the terminal end of the poly(oxypropylene) chain is a hydrogen atom:  wherein R and the fluoroaliphatic group-containing copolymer contains the repeating unit corresponding to the monomer (i) in an amount of 25 mol % or more, based on total amount of repeating units in the copolymer.