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:
Jul. 27, 2004
Filed:
Nov. 25, 2002
Applicant:
Inventors:
Assignee:
Alps Electric Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41J 2/05 ;
U.S. Cl.
CPC ...
B41J 2/05 ;
Abstract
A thermal head includes a heat insulating layer made up of an electrically-conductive multiple low oxide ceramic layer of low thermal conductivity made of a chemical compound of Si, plural transition metals and oxygen. A first insulating layer made up of an insulated multiple high nitride ceramic layer of low thermal conductivity made of a chemical compound of at least Si, plural transition metals and nitrogen is formed on the heat insulating layer, and a second insulating layer made up of an SiO layer of high insulation characteristics or an Al O layer is formed on the first insulating layer.