Thermosensitive recording material

Details Thermosensitive recording material Thermosensitive recording material

1987-06-19

1989-08-15

Hess, Bruce H.

Record receiver having plural interactive leaves or a colorless

Having a colorless color-former, developer therefor, or...

Identified organic electron acceptor other than phenolic resin

427150, 428913, 428914, 503216, 503218, 503221, 503225, B41M 518

Patent

active

048575020

ABSTRACT:
A thermosensitive recording material comprising a support material and a thermosensitive coloring layer formed on said support material, said thermosensitive coloring layer comprising a colorless or light-colored leuco dye and a color developer capable of inducing color formation in said leuco dye upon application of heat thereto, the improvement wherein said leuco dye is a compound having general formula (I), ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 each represent hydrogen or an alkyl group having a substituent, R.sup.5 and R.sup.6 each represent hydrogen or a phenyl group which may have a substituent, and R.sup.7 represents an alkyl group which may have a substituent or a phenyl group which may have a substituent,
and said color developer is a compound having general formula (II), ##STR2## wherein X.sup.1, X.sup.2, X.sup.3 and X.sup.4 each represent hydrogen or an alkyl group having 1 to 4 carbon atoms.

REFERENCES:
patent: 4542395 (1985-09-01), Saito et al.

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