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:
Oct. 20, 1992
Filed:
Aug. 07, 1990
Taisaku Seino, Ibaraki, JP;
Michihiro Watanabe, Tsuchiura, JP;
Munetoshi Zen, Kashiwa, JP;
Kazutaka Sato, Kashiwa, JP;
Shigeru Obata, Ibaraki, JP;
Maya Arai, Ibaraki, JP;
Kazuhiko Atou, Mito, JP;
Kentaro Hamma, Katsuta, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A thick film type thermal head produced by consecutively forming, on an insulator substrate, a heat-resistant layer, an electrode, a heating resistor and a protective layer, wherein the protective layer comprises an electrically insulating protective layer covering the heating resistor and that portion of the electrically insulating protective layer which corresponds to a medium comprises a heat-diffusing coating having a high thermal conductivity over the electrically insulating protective layer.