Patent ID: 7060412

Claim:
Heat-sensitive composition which forms an image without the removal of material, which does not require any developing treatment after the stage of exposure to heat and comprises: a) a switchable polymer, b) an IR absorber, c) a triazine compound, and d) a novolak resin; characterised in that the triazine compound has the structural formula: where at least one of the substituents R1, R2 and R3 is NR′ R″ and the others are H or NR′ R″ and at least one of the substituents R′ and R″ is CH 2 -O-Alk 1-4 c and the others R′, R″, which are the same or different from each other, are H or —CH 2 -O-Alk 1-4 c .