Black thermal transfer sheet

Details Black thermal transfer sheet Black thermal transfer sheet

1997-09-11

1999-01-12

Schilling, Richard L.

Radiation imagery chemistry: process, composition, or product th

Dye image from radiation sensitive dye or dye former by dry...

Composition or product

430201, 430964, 8471, 503227, G03C 810

Patent

active

058586288

ABSTRACT:
A black thermal transfer sheet comprises a substrate film and a black dye layer formed on one surface of the substrate film. The die layer comprises dye and a binder. The dye comprises a first dye and a second dye respectively expressed by the following formulae (1) and (2): ##STR1## (where, "R.sup.1 " and "R.sup.2 " represent a substitutional or non-substitutional alkyl group, etc., "R.sup.3 " represents a hydrogen atom, etc., "R.sup.4 " represents a substitutional or non-substitutional alkyl group, etc., and "R.sup.5 " represents a substitutional or non-substitutional aminocarbonyl group, etc.; and "n" represents an integer of 1 or 2); and ##STR2## (where, "R.sup.1 ", "R.sup.2 ", "R.sup.3 " and "n" represent the same definitions as those in the formula (1), and "R.sup.6 " and "R.sup.7 " represent a substitutional or non-substitutional alkyl group, etc.).

REFERENCES:
patent: 5326666 (1994-07-01), Vanmaele et al.
patent: 5503956 (1996-04-01), Kaszczuk et al.
"Azomethine Dyes. I. Color and Constitution of Pyrazolone Azomethine Dyes" (XP 002049362) Brown et al., J. Am. Chem. Soc., vol. 73, Mar. 1951.

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