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. 17, 2026
Filed:
Mar. 29, 2024
Seiko Epson Corporation, Tokyo, JP;
Yoichi Naganuma, Matsumoto, JP;
Shohei Mizuta, Matsumoto, JP;
Yuki Watanabe, Matsumoto, JP;
Madoka Goi, Matsumoto, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A liquid ejecting head has a piezoelectric element, a diaphragm, and a pressure chamber substrate having a pressure chamber coupled to a nozzle and contributing to ejection of a liquid by applying pressure on the liquid through vibration of the diaphragm and a dummy pressure chamber not contributing to ejection of the liquid. Each of the pressure chamber and the dummy pressure chamber opens on a surface opposite to a surface facing the diaphragm of the pressure chamber substrate, and is a recess having a depth in a direction toward the diaphragm along the lamination direction. Furthermore, the pressure chamber and the dummy pressure chamber are arranged in an arrangement direction perpendicular to the lamination direction, and a first depth as the depth of the dummy pressure chamber is shallower than a second depth as the depth of the pressure chamber.