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:
Feb. 26, 1985
Filed:
Aug. 17, 1983
Applicant:
Inventors:
Assignee:
Jujo Paper Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41M / ;
U.S. Cl.
CPC ...
346209 ; 346216 ; 346217 ; 346221 ; 346225 ; 427150 ; 427151 ;
Abstract
Heat-sensitive recording sheet comprising a base sheet and a color-forming layer including a colorless basic dyestuff and a mono-phenolic 4-hydroxyphenyl compound which is reactive with said dyestuff by heating, wherein said color-forming layer comprises a metal salt of p-alkylbenzoic acid or a metal salt of o-benzoylbenzoic acid (having a particular formula). The sheet provides superior stability against contamination with oily substances while keeping excellent fundamental qualities thereof.