Patent ID: 6852469

Claim:
A lithographic printing plate precursor comprising a support and a hydrophilic layer capable of hydrophobicizing by heat, wherein the hydrophilic layer comprises: a particulate hydrophobicizing precursor; a photo-heat converting agent; a hydrophilic polymer having a terminal silane coupling group, and a metal complex catalysts, wherein the hydrophilic nolymer is a polymer represented by the following general formula (1-1): wherein R 1 , R 2 , R 3 and R 4 each independently represents a hydrogen atom or a hydrocarbon groud having 8 or less carbon atoms, m represents an inteaer of 0 to 2, n represents an integer of from 1 to 8, p represents an inteaer of from 30 to 300, Y represents —NHCOCH 3 , —CONH 2 , —CON(CH 3 ) 2 , —COCH 3 , —OH, —CO 2 M or —CONHC(CH 3 ) 2 SO 3 M, M represents a hydrogen atom, an alkaline metal, an alkaline earth metal or onium, and L represents a single bond or an organic connectina group.