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. 27, 2002
Filed:
Oct. 27, 2000
Applicant:
Inventors:
Hiroshi Masutani, Kagoshima, JP;
Takayuki Yamamoto, Kagoshima, JP;
Assignee:
Kyocera Corporation, Kyoto, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41J 2/335 ;
U.S. Cl.
CPC ...
B41J 2/335 ;
Abstract
An object of the invention is to provide a thermal head provided with an excellent protective layer where a dielectric breakdown is hardly caused even when printing is performed on a recording medium of low moisture absorbency. In a thermal head of the invention, heating resistors are provided on an insulating substrate, and the heating resistors are coated with a protective layer containing carbon and silicon. The protective layer contains 65 to 90 atm % carbon, and carbon-to-carbon bonds of the protective layer include 95.0% or more covalent bonds related to an sp hybrid orbital.