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. 21, 1993
Filed:
Aug. 10, 1990
Applicant:
Inventors:
Ryuzo Fukao, Suita, JP;
Tsunemi Oiwa, Osaka, JP;
Shuichi Wada, Settsu, JP;
Akio Shimizu, Takatsuki, JP;
Seiichi Asada, Mishima, JP;
Hisanobu Mikamo, Ibaraki, JP;
Akira Kato, Takarazuka, JP;
Assignee:
Hitachi Maxell Ltd., Ibaraki, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428209 ; 428195 ; 428207 ; 428208 ; 4284231 ; 4284244 ; 4284259 ; 428429 ; 428900 ;
Abstract
A thermal recording medium including a base layer containing a resin having a functional group which chemically bonds with a metal having a low melting point, such as Sn-Pb alloy, and a thermal recording layer made of a thin film with low resistivity of a low melting point metal formed on said base layer such that when a part of the thermal recording layer is heated, the heated part melts and perforates to record information.