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. 12, 1997
Filed:
Jun. 22, 1995
Applicant:
Inventors:
Toshiyuki Takano, Tokyo, JP;
Hideki Hayasaka, Tokyo, JP;
Yukiko Uehori, Tokyo, JP;
Toshimi Satake, Tokyo, JP;
Assignee:
Nippon Paper Industries Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41M / ;
U.S. Cl.
CPC ...
503216 ; 503225 ;
Abstract
In a thermal recording material having a thermal recording layer containing a colorless or pale colored dye precursor and a color developer reactable with the dye precursor upon heating to develop a color of the dye precursor, the color developer is a bisurea compound, for example, Compound A-2. The thermal recording material is superior in stability of background color.