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:
Apr. 27, 1993
Filed:
Jul. 23, 1991
Applicant:
Inventors:
Tetsuo Tsuchida, Takarazuka, JP;
Yukihiro Abe, Kobe, JP;
Takehiro Minami, Osaka, JP;
Naoto Arai, Ikeda, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41M / ;
U.S. Cl.
CPC ...
503210 ; 503211 ; 503212 ; 503216 ; 503217 ; 503221 ;
Abstract
Disclosed is a heat-sensitive recording material comprising (A) a support and (B) a heat-sensitive recording layer formed on the support and containing a colorless or pale-colored basic dye and a color developing material which develops a color on contact with the dye, the recording material being characterized in that the color developing material comprises at least one member selected from the group consisting of o-naphthoic acid and polyvalent metal salts thereof.