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. 13, 2026
Filed:
Mar. 29, 2024
Seiko Epson Corporation, Tokyo, JP;
Hiroaki Tamura, Shimosuwa, JP;
SEIKO EPSON CORPORATION, , JP;
Abstract
A liquid ejecting head includes a piezoelectric element, a diaphragm, a reinforcing film, and a pressure chamber substrate. The reinforcing film is formed along a first direction, overlaps a boundary between the partition wall and the pressure chamber, and satisfies Y1>Y2 and 0<a1<a2 where Y1 is a first thickness of the reinforcing film in the lamination direction at a first position, Y2 is a second thickness of the reinforcing film in the lamination direction at a second position closer to the center of the pressure chamber than the first position, a1 is an absolute value of a slope of a first tangent line, to an inclined surface as a surface of the reinforcing film that is not in contact with the diaphragm, at the first position, and a2 is an absolute value of a slope of a second tangent line at the second position.