Merocyanine dye-donor element used in thermal dye transfer

Details Merocyanine dye-donor element used in thermal dye transfer Merocyanine dye-donor element used in thermal dye transfer

1987-06-08

1988-07-12

Hess, Bruce H.

Record receiver having plural interactive leaves or a colorless

Having plural interactive leaves

8471, 427256, 428195, 428480, 428913, 428914, B41M 5035, B41M 526

Patent

active

047570466

ABSTRACT:
A dye-donor element for thermal dye transfer comprises a support having thereon a merocyanine dye dispersed in a polymeric binder, the merocyanine dye being capable of transfer by diffusion to a dye-receiving element upon the application of heat and being incapable of substantial photolysis, the merocyanine dye being substituted or unsubstituted on the bridging methine carbon atoms.
In a preferred embodiment, the merocyanine dye has the formula: ##STR1## wherein: A represents --COR, --COOR, --CONHR, --CN, --SO.sub.2 R or --SO.sub.2 NR.sub.2 ; or A may be combined together with R.sup.1 to form a heterocyclic or carbocyclic ring system;

REFERENCES:
patent: 3933914 (1976-01-01), Coles et al.
patent: 4632895 (1986-12-01), Patel et al.

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