Pyridone dyestuff for thermal transfer recording and printing sh

Details Pyridone dyestuff for thermal transfer recording and printing sh Pyridone dyestuff for thermal transfer recording and printing sh

1988-12-02

1990-02-06

Hess, Bruce H.

Record receiver having plural interactive leaves or a colorless

Having plural interactive leaves

8471, 428195, 428211, 428913, 428914, B41M 5035, B41M 526

Patent

active

048988502

ABSTRACT:
Thermally printable sheets, such as paper coated with a polymer such as a polyester or a polyacrylonitrile are colored yellow by a thermal transfer printing process, e.g., using a decal printing transfer sheet, which employs as a yellow dyestuff a 2-pyridone of the formula ##STR1## wherein R.sup.1 is a lower alkyl, and R.sup.2 is lower alkyl, lower alkoxy-lower alkyl, carbocyclic aryl-lower alkyl, cyclo-lower alkyl, lower alkenyl or lower alkoxycarbonylmethyl.

REFERENCES:
patent: 4808568 (1989-02-01), Gregory et al.

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