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:
Mar. 08, 1994
Filed:
May. 05, 1992
Oji Paper Co., Ltd., Tokyo, JP;
Abstract
A thermosensitive recording material, capable of providing colored images having a high resistance to oily substances and plasticizers and an excellent storage persistency for a long time, comprises a thermosensitive colored image-forming layer formed on a sheet substrate and comprising a colorless dye precursor, a color developing agent, a colored image-stabilizing agent comprising an aziridinyl compound and/or an epoxy compound, and an additional colored image-stabilizing agent comprising a primary or secondary amine compound and/or a carboxylic compound having a carboxyl group or --CO--O--CO-- group; the color developing agent preferably comprising a compound of the formula (I): ##STR1## wherein X is an O or S atom, R.sub.1 is an unsubstituted aromatic group, or a substituted phenyl group having a lower alkyl or a halogen atom, and R.sub.2 and R.sub.3 are respectively a hydrogen atom, or alkyl group, aryl groups, substituted alkyl group with an aryloxy group, or a substituted aromatic group having an alkyl, aryl, aralkyl, alkyloxy, alkyloxycarbonyl, aryloxycarbonyl, aralkyloxycarbonyl or arylsulfonyl group or a halogen atom.