| 摘要 |
<p>A dye-donor element for laser-induced thermal dye transfer comprising a support having thereon a dye layer and an inf rared-absorbing material which is different from the dye in the dye layer, characterized in that the infrared-absorbing material is a bis(chalcogenopyrylo)polymethine dye which is located in the dye layer. In a preferred embodiment, the bis(chalcogenopyrylo)polymethine dye has the following formula: <CHEM> wherein: R<1>, R<2> and R<3> each independently represents hydrogen, halogen, cyano, alkoxy, aryloxy, acyloxy, aryloxycarbonyl, alkoxycarbonyl, sulfonyl, carbamoyl, acyl, acylamido, alkylamino, arylamino or a substituted or unsubstituted alkyl, aryl or hetaryl group; or any two of said R<1>, R<2> and R<3> groups may be joined together to form a 5- to 7-membered substituted or unsubstituted carbocyclic or heterocyclic ring; or R<1> may be joined to Z<1> to form a fused 5- to 7-membered substituted or unsubstituted carbocyclic or heterocyclic ring; or R<3> may be joined to Z<1> to form a fused 5- to 7-membered substituted or unsubstituted carbocyclic or heterocyclic ring; Y<1> and Y<2> each independently represents sulfur, oxygen, tellurium, or selenium, with the methine chain being joined ortho or para to each of Y<1> and Y<2>; Z<1> and Z<2> each independently represents hydrogen; a substituted or unsubstituted alkyl group having from 1 to 6 carbon atoms; a substituted or unsubstituted aryl or hetaryl group having from 5 to 10 atoms; or the atoms necessary to complete a 5- to 7-membered carbocyclic or heterocyclic ring; each m independently is 1 to 4; n is 1 to 3; and X is a monovalent anion. y</p> |
