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. 20, 1991
Filed:
Aug. 21, 1990
Applicant:
Inventors:
Shoji Matsumoto, Toyonaka, JP;
Daisuke Kosaka, Takarazuka, JP;
Masaaki Yoshida, Osaka, JP;
Hidehito Kitakado, Yokohama, JP;
Kenji Fujita, Toyonaka, JP;
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41J / ; H04N / ;
U.S. Cl.
CPC ...
346 / ;
Abstract
A thermal head comprising a substrate, a heat-resistant dielectric resin layer disposed on the substrate, a resistor layer disposed on the resin layer for forming a plurality of heating elements and an electrode layer disposed on the resistor layer for forming electrodes connecting to the heating elements. A protection film covers an end of the substrate and each end of the layers which is substantially in the same plane as the substrate end.