Importance

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Abstract

A dye-donor element for laser-induced thermal dye transfer comprising a support having thereon a dye layer and an infrared-absorbing material which is different from the dye in the dye layer, and wherein the infrared-absorbing material is an oxyindolizine dye. In a preferred embodiment, the oxyindolizine dye has the following formula: ##STR1## wherein R.sup.1 and R.sup.2 each independently represents a substituted or unsubstituted alkyl group having from 1 to about 6 carbon atoms or an aryl, cycloalkyl or hetaryl group having from about 5 to about 10 atoms; R.sup.3, R.sup.4, R.sup.5, R.sup.6 and R.sup.7 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.sup.3, R.sup.4, R.sup.5, R.sup.6 and R.sup.7 groups may be combined with each other to form a 5- to 7-membered substituted or unsubstituted carbocyclic or heterocyclic ring; Y represents oxygen, sulfur, selenium, tellurium, nitrogen or phosphorus; A and Z each independently represents hydrogen or the atoms necessary to complete a 5- to 7-membered substituted or unsubstituted carbocyclic or heterocyclic ring, with the proviso that Z may be a ring only when Y is nitrogen or phosphorus; n is 0 to 2, with the proviso that n is 1 or 2 when Y is oxygen, sulfur, selenium or tellurium; and X is a monovalent anion.

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First Claim