Infrared absorbing oxonol dyes for dye-donor element used in las

Details Infrared absorbing oxonol dyes for dye-donor element used in las Infrared absorbing oxonol dyes for dye-donor element used in las

1989-06-16

1991-07-30

Bowers, Jr., Charles L.

Radiation imagery chemistry: process, composition, or product th

Transfer procedure between image and image layer, image...

Imagewise heating, element or image receiving layers...

430253, 430346, 430363, 430944, 503227, B41M 5035, B41M 526

Patent

active

050359770

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 oxonol dye. In a preferred embodiment, the oxonol dye has the following formula: ##STR1## wherein: R.sup.1, R.sup.2 and R.sup.3 each independently represents hydrogen, halogen, cyano, alkoxy, aryloxy, acyloxy, aryloxycarbonyl, alkoxycarbonyl, carbamoyl, sulfonyl, acyl, acylamido, alkylamino, arylamino or a substituted or unsubstituted alkyl, aryl or hetaryl group; or any two of said R.sup.1, R.sup.2 and R.sup.3 groups may be joined together to complete a 5- to 7-membered substituted or unsubstituted carbocyclic or heterocyclic ring; or either R.sup.1 or R.sup.2 may be joined to R.sup.4 or R.sup.6 to complete a 5- to 7-membered substituted or unsubstituted carbocyclic or heterocyclic ring; or R.sup.2 or R.sup.3 may be joined to R.sup.5 or R.sup.7 to complete a 5- to 7-membered substituted or unsubstituted carbocyclic or heterocyclic ring;

REFERENCES:
patent: 3493375 (1970-02-01), Van der Auwera
patent: 3523791 (1970-08-01), Vrancken et al.
patent: 4102688 (1978-07-01), Sugiyama et al.

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