The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 22, 1995
Filed:
Jan. 07, 1994
Akiko Iwasaki, Urawa, JP;
Kunitaka Toyofuku, Sakura, JP;
Kyoko Uchida, Machida, JP;
Masatoshi Fujino, Tokyo, JP;
New Oil Paper Co., Ltd., Tokyo, JP;
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.