Thermosensitive recording material

Details Thermosensitive recording material Thermosensitive recording material

1994-01-07

1995-08-22

Hess, B. Hamilton

Record receiver having plural interactive leaves or a colorless

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

Having nonchromogenic liquid spread-control or...

427150, 503208, 503216, 503225, B41M 530

Patent

active

054440360

ABSTRACT:
A thermosensitive recording material for recording thereon clear colored images having an excellent storage persistency over a long time, comprises a thermosensitive colored image-forming layer formed on a substrate and comprising a colorless dye precursor, a binder and a color developing agent comprising at least one compound having at least one group of the formula (I): ##STR1## wherein R = unsubstituted aromatic group or substituted aromatic group having at least one substituent selected from alkyl, alkoxyl and halogen, and the thermosensitive colored image-forming layer further comprises an additive comprising at least one member selected from the compounds of the formulae (II) and (III): ##STR2## wherein R.sup.1, R.sup.2, R.sup.3 = alkyl, alkoxyl, aralkyl, aryl, aryloxy, nitro, acetylamino, acetoacetylamino, halogen or hydrogen; and Ar.sub.1, Ar.sub.2 = unsubstituted phenyl or naphthyl or substituted phenyl or naphthyl with 1 to 3 substituent selected from aryl, alkyl, alkoxyl, nitro, alkylamino, allyloxy, aryloxy and aralkyloxy groups and halogen atoms, one of Ar.sub.1 and Ar.sub.2 having a substituent selected from alkoxyl, allyloxy, phenoxy and benzyloxy groups.

REFERENCES:
patent: 3539375 (1970-11-01), Baum
patent: 5246906 (1993-09-01), Takahashi et al.
patent: 5292711 (1994-03-01), Nishimura et al.
patent: 5314859 (1994-05-01), Takahashi et al.

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