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:
Aug. 31, 1993
Filed:
Sep. 02, 1992
Applicant:
Inventors:
Hiroyuki Yoshida, Yokohama, JP;
Masahiko Yamaguchi, Yokohama, JP;
Toshiyuki Abe, Yokohama, JP;
Masami Ito, Yokohama, JP;
Assignee:
Hodogaya Chemical Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B41M / ;
U.S. Cl.
CPC ...
503209 ; 503214 ; 503216 ; 503217 ; 503218 ;
Abstract
A heat sensitive recording material comprising a support and a recording layer formed on the support, the recording layer comprising, as essential components, a colorless or light-colored electron donative dyestuff, an acidic substance to let the electron donative dyestuff form a color when heated, and a binder, wherein 2-[(phenylthio)methyl]naphthalene is incorporated in the recording layer.