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:
Feb. 23, 2021
Filed:
Dec. 17, 2019
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventors:
Masanori Mikoshiba, Shimosuwa-machi, JP;
Shiro Yazaki, Chino, JP;
Toshinao Shinbo, Matsumoto, JP;
Hitoshi Takaai, Azumino, JP;
Assignee:
Seiko Epson Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/14 (2006.01); H05K 3/36 (2006.01); B41J 2/01 (2006.01);
U.S. Cl.
CPC ...
B41J 2/14233 (2013.01); H05K 3/361 (2013.01); B41J 2/01 (2013.01); B41J 2002/14258 (2013.01); B41J 2002/14362 (2013.01); B41J 2002/14419 (2013.01); B41J 2002/14491 (2013.01); B41J 2202/12 (2013.01);
Abstract
A liquid ejecting head including a diaphragm constituting a portion of a wall surface of a pressure chamber that accommodates a liquid, and a piezoelectric element that vibrates the diaphragm. In the liquid ejecting head, the diaphragm includes a plurality of layers, and d/D≤0.25 is satisfied where D is a thickness of the diaphragm and d is a distance between a neutral axis of the diaphragm and an interface between two adjacent layers in which a tension difference is the largest in the plurality of layers.