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:
Mar. 23, 2021
Filed:
Jul. 12, 2018
Applicant:
Aoi Electronics Co., Ltd., Takamatsu, JP;
Inventors:
Assignee:
AOI Electronics Co., Ltd., Takamatsu, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41J 2/335 (2006.01);
U.S. Cl.
CPC ...
B41J 2/3353 (2013.01); B41J 2/3351 (2013.01);
Abstract
A thermal head includes: an underglaze layer provided on an insulating substrate; an electrode provided on the underglaze layer; a heat generator provided on the electrode; a first protective layer containing a glass material and covering at least the heat generator; and a second protective layer provided on the first protective layer, having a melting point higher than that of the first protective layer, and made of a material whose thermal expansion coefficient at a temperature of 1000° C. or lower is substantially constant.