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:
Jan. 02, 2024
Filed:
May. 17, 2021
Seiko Epson Corporation, Tokyo, JP;
Toshihiro Shimizu, Fujimi-Machi, JP;
Harunobu Koike, Matsumoto, JP;
Takanori Aimono, Matsumoto, JP;
Masao Nakayama, Shiojiri, JP;
Tatsuo Sawasaki, Fujimi-machi, JP;
Chihiro Nishi, Chino, JP;
Noritaka Mochizuki, Kofu, JP;
Yasushi Yamazaki, Azumino, JP;
Osamu Tonomura, Ebina, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A liquid ejection head includes: a piezoelectric body; an vibration plate to be vibrated by a drive of the piezoelectric body; and a pressure chamber substrate including a pressure chamber which applies a pressure to a liquid by an vibration of the vibration plate; the pressure chamber substrate, the vibration plate, and the piezoelectric body are laminated in this order; and the vibration plate includes: a first layer containing silicon as a constituent element, a second layer which is disposed between the first layer and the piezoelectric body and which contains as a constituent element, a metal element selected from chromium, titanium, and aluminum, and a third layer which is disposed between the second layer and the piezoelectric body and which contains zirconium as a constituent element.