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:
Mar. 12, 1991
Filed:
Sep. 08, 1988
Applicant:
Inventors:
Assignee:
Mitsubishi Paper Mills, Limited, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41M / ;
U.S. Cl.
CPC ...
503209 ; 503208 ; 503217 ; 503221 ; 503225 ;
Abstract
A heat-sensitive recording material comprising a dye precursor which is colorless or light-colored in the usual state and a color developing agent capable of reacting with said dye precursor upon heating to develop a color which is a combination of compounds of the following chemical formulas (I) and (II). Said material may comprise further the compounds of the following formula (III): ##STR1##