Patent ID: 6482768
Filing Date: 2002-11-19
Classification: B41M,Y10S

Abstract:
A laser thermal transfer material comprising at least a light-to-heat conversion layer and an image forming layer on a support, said image forming layer comprising at least one compound selected from the group consisting of compounds represented by the following general formulas (1), (2), (4) and (5): wherein Rh represents a hydrogen atom, an alkyl group having 1-5 carbon atoms, an alkoxy group having 1-5 carbon atoms, a halogen atom, a carboxylate ester group having an alkyl group having 1-5 carbon atoms, or an amide group having an alkyl group having 1-5 carbon atoms; u is an integer of 1-4; and if u is at least two, Rh's may be the same as or different from each other; wherein R1 and R2 each independently represents an alkyl group having 1-5 carbon atoms or an alkoxy group having 1-5 carbon atoms; R3 and R4 each independently represents an aromatic group, or a condensed heterocyclic group wherein a heteroring is condensed with an aromatic ring; aromatic groups comprising Ri or Rj are connected to each other through a bivalent connecting group X; Ri and Rj each independently represents a hydrogen atom, an alkyl group having 1-5 carbon atoms, an alkoxy group having 1-5 carbon atoms, or a halogen atom; p and q each independently represents an integer of 1-4; and if p or q is at least 2, Ri's and Rj's may be the same as or different from each other; wherein Rm represents an alkoxylcarbonyl group having 2-5 carbon atoms, an alkyl group having 1-5 carbon atoms or an alkoxy group having 1-5 carbon atoms; s is an integer of 1-5; and if s is at least two, Rm's may be the same as or different from each other; wherein Ar represents an arylene group; Rn represents a hydrogen atom, an alkoxylcarbonyl group having 2-5 carbon atoms, an alkyl group having 1-5 carbon atoms or an alkoxy group having 1-5 carbon atom; t is an integer of 1-5; Rx represents an hydrogen atom, an alkyl group having 1-5 carbon atoms or an alkoxy group having 1-5 carbon atoms; y is an integer of 1-4; and if t or y is at least 2, Rn's or Rx's may be the same as or different from each other.