Patent ID: 8304168

Claim:
A lithographic printing plate precursor comprising above a support a photosensitive layer comprising (i) a binder polymer, (ii) an ethylenically unsaturated compound, and (iii) a polymerization initiator, the ethylenically unsaturated compound (ii) comprising a compound selected from the group consisting of compounds represented by Formulae (2) to (4) below, wherein L 1 denotes an (a+1)-valent linking group having a urethane bond, L 2 denotes a (c+1)-valent linking group having a urethane bond, L 3 denotes a (d+1)-valent linking group having a urethane bond. L 4 denotes an (f+1)-valent linking group having a urethane bond, L 5 denotes a (g+1)-valent linking group having a urethane bond, A 1 denotes an oxygen atom, a sulfur atom, or NR 30 wherein R 30 denotes a monovalent substituent, D 1 to D 5 each independently denotes a group selected from the group consisting of groups represented by Formulae (A) to (D) below, the Rs each independently denotes a monovalent substituent, R 16 to R 29 each independently denotes a monovalent substituent, a, c, d, f and g each independently denotes an integer of 1 to 19, b denotes an integer of 0 to 3, e denotes an integer of 1 to 10, and h denotes an integer of 1 to 10, wherein X, Y, and Z each independently denotes an oxygen atom, a sulfur atom, or NR 17 , R 4 to R 14 and R 17 each independently denotes a hydrogen atom or a monovalent substituent, R 15 denotes a hydrogen atom or a methyl group, R 16 denotes a monovalent substituent, and k denotes an integer of 0 to 4.