Infrared absorbing trinuclear cyanine dyes for dye-donor element

Details Infrared absorbing trinuclear cyanine dyes for dye-donor element Infrared absorbing trinuclear cyanine dyes for dye-donor element

1989-06-16

1991-07-23

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

050343033

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 trinuclear cyanine dye. In a preferred embodiment, the trinuclear cyanine dye has the following formula: ##STR1## wherein: R.sup.1, R.sup.2 and R.sup.3 each independently represents a substituted or unsubstituted alkyl or cycloalkyl group having from 1 to about 6 carbon atoms or an aryl or hetaryl group having from about 5 to about 10 atoms;

REFERENCES:
patent: 2504468 (1950-04-01), Thompson
patent: 2535993 (1950-12-01), Thompson
patent: 4784933 (1988-11-01), Kanada et al.
patent: 4920040 (1990-04-01), Ono

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