Infrared absorbing chalcogenopyrylo-arylidene dyes for dye-donor

Details Infrared absorbing chalcogenopyrylo-arylidene dyes for dye-donor Infrared absorbing chalcogenopyrylo-arylidene dyes for dye-donor

1989-06-16

1990-08-14

Hess, Bruce H.

Record receiver having plural interactive leaves or a colorless

Having plural interactive leaves

8471, 428195, 428480, 428913, 428914, 430200, 430201, 430202, 430945, B41M 5035, B41M 526

Patent

active

049487760

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 a chalcogenopyrylo-arylidene dye. In a preferred embodiment, the chalcogenopyrylo-arylidene dye has the following formula: ##STR1## wherein: R.sup.1 and R.sup.2 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 of R.sup.1 and R.sup.2 may be joined together or with an adjacent aromatic ring to complete a 5- to 7-membered substituted or unsubstituted carbocyclic or heterocyclic ring;

REFERENCES:
Helv. Chim. Acta 39, 217 (1956) (Wizinger et al.).

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