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:
Sep. 29, 2015
Filed:
Dec. 10, 2014
Seiko Epson Corporation, Tokyo, JP;
Eiju Hirai, Okaya, JP;
Shiro Yazaki, Chino, JP;
Koji Sumi, Shiojiri, JP;
Motoki Takabe, Matsumoto, JP;
Jiro Kato, Suwa, JP;
Hiroshi Ito, Suwa, JP;
Toshihiro Shimizu, Fujimi, JP;
Takahiro Kamijo, Matsumoto, JP;
Tatsuro Torimoto, Matsumoto, JP;
Chikara Kojima, Matsumoto, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A liquid ejection head includes a substrate in which a pressure generating chamber that communicates with a nozzle opening is formed; and a piezoelectric element having a piezoelectric layer, a first electrode that is formed on a surface of the piezoelectric layer on a side of the substrate so as to correspond to the pressure generating chamber, and a second electrode that is formed on a surface of the piezoelectric layer opposite to the side on which the first electrode is formed so as to extend over a plurality of the pressure generating chambers, wherein the second electrode is formed to extend to an outside of the pressure generating chamber in a longitudinal direction of the pressure generating chamber.