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:
Nov. 09, 1993
Filed:
Feb. 27, 1992
Abstract
A thermal transfer sheet including a substrate sheet and a dye supporting layer formed on one surface of said substrate sheet, characterized in that the dye contained in said dye supporting layer is represented by the following general formula ##STR1## wherein R.sub.1 stands for a substituted or unsubstituted alkyl group, cycloalkyl group, aralkyl group or aryl group or an atom or atom group which combines with X to form a five- or six-membered ring; R.sub.2 stands for a substituted or unsubstituted alkyl group, a cycloalkyl group, an aralkyl group or an aryl group, provided that R.sub.1 and R.sub.2 may combine with each other to form a five- or six-membered ring which may have an oxygen or nitrogen atom; R.sub.3 stands for a hydrogen atom, a halogen atom, a cyano group, a substituted or unsubstituted alkyl group, cycloalkyl group, alkoxy group, aralkyl group, aryl group, acyl group, acylamino group, sulfonylamino group, ureido group, carbamoyl group, sulfamoyl group or amino group; R.sub.4 stands for a substituted or unsubstituted three- to five-membered cycloalkyl group or thienyl group bonded at the .beta.-position, or a substituted or unsubstituted five- or six-membered cycloalkenyl group, or a group represented by the following formula ##STR2## R.sub.5 and R.sub.6 which may be the same or different stand for a hydrogen atom, a halogen atom, a substituted or unsubstituted alkyl group, alkoxy group, acylamino group, sulfonylamino group or ureido group; X stands for a hydrogen atom or an atom or atom group which combines with R.sub.1 to form a five- or six-membered ring; n is 1 or 2; R.sub.7 and R.sub.8 stand for a hydrogen atom, a halogen atom or a lower alkyl group; Z stand for CH.sub.2, O, S or NR.sub.9 ; and R.sub.9 stands for a hydrogen atom or a lower alkyl group.