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:
Nov. 24, 1987
Filed:
Jan. 23, 1986
Applicant:
Inventors:
Assignee:
Kyocera Corporation, Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01D / ; B47J / ;
U.S. Cl.
CPC ...
428698 ; 428703 ; 501134 ; 501 63 ; 360127 ; 346 / ; 219543 ;
Abstract
Disclosed is a thermal head comprising a protecting film composed of tantalum silicon oxynitride. An undercoat film may be formed between this protecting film and heat-generating resistors and electrodes. This protecting film is excellent in the abrasion resistance and oxygen barrier property and acts as an excellent barrier to alkali metal ions to be injected into the head from a heat-sensitive recording paper.