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. 16, 1993
Filed:
Oct. 25, 1991
Applicant:
Inventors:
Kazuo Watanabe, Itami, JP;
Tosaku Okamoto, Osaka, JP;
Assignee:
Kanzaki Paper Manufacturing Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B41M / ;
U.S. Cl.
CPC ...
503212 ; 503216 ; 503217 ; 503221 ; 503225 ;
Abstract
The present invention provides a heat sensitive recording material having a recoridng layer formed on a substrate and containing a colorless or light-colored basic dye and a color developer, the heat sensitive recording material being characterized in that the color developer includes a zinc salt of terephthalaldehydic acid or a composite zinc salt of terephthalaldehydic acid and other aromatic carboxylic acid.