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:
Sep. 10, 1991
Filed:
Mar. 19, 1990
Applicant:
Inventors:
Assignee:
Kanzaki Paper Manufacturing Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41M / ;
U.S. Cl.
CPC ...
503200 ; 427152 ; 503226 ;
Abstract
An improved heat-sensitive recording material of the type having a substrate and a heat-sensitive recording layer formed on said substrate, said heat-sensitive recording layer containing a color former and a color developer to color said color former upon contact by heating, characterized in that said substrate comprises an adiabatic foamed polyester resin film containing minutes cavities with an apparent specific gravity in the range of 0.9 to 1.2.