Patent ID: 8778590

Claim:
A lithographic printing plate precursor comprising a coating provided on a support having a hydrophilic surface, the coating containing thermoplastic polymer particles and an IR-dye, wherein the IR-dye contains a structural element according to Formula I, wherein A represents a hydrogen, an optionally substituted alkyl, aralkyl or aryl group, halogen, —OR c , —SR d , —NR f R g , —NR h (SO 2 R i ) or —NR j (CO 2 R k ) wherein R c represents an optionally substituted aryl group, R d represents an optionally substituted alkyl, aralkyl, aryl or heteroaryl group, R f represents an optionally substituted alkyl, aralkyl or aryl group, R g represents an optionally substituted aryl group, R h represents an optionally substituted alkyl or aryl group, R i represents an optionally substituted alkyl or aryl group or —NR i1 R i2 wherein R i1 and R i2 represent hydrogen, an optionally substituted alkyl or aryl group, R j represents an optionally substituted alkyl or aryl group and R k represents an optionally substituted alkyl group; Y and Y′ independently represent —CH— or —N—; R 1 and R 2 independently represent hydrogen, an optionally substituted alkyl or aryl group or represent the necessary atoms to form a ring; and * represent the linking positions to the rest of the molecule.