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. 19, 2002
Filed:
Nov. 30, 2001
Applicant:
Inventors:
Takumi Yamade, Kyoto, JP;
Hiroaki Hayashi, Kyoto, JP;
Assignee:
Rohm Co., Ltd., Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/335 ; C23C 1/406 ; C23C 1/434 ;
U.S. Cl.
CPC ...
B41J 2/335 ; C23C 1/406 ; C23C 1/434 ;
Abstract
A thermal printhead ( ) comprises a substrate ( ), an electrode pattern ( ) formed on the substrate, including a common electrode and a plurality of individual electrodes, a heating resister ( )connected to the electrode pattern ( ), and a protective coating ( ) including a plurality of layers ( ) covering the electrode pattern ( ) and the heating resister ( ). The protective coating includes an outermost layer ( ) composed mainly of SiC and an admixture of carbon.