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:
Jul. 14, 2026
Filed:
Mar. 20, 2024
Seiko Epson Corporation, Tokyo, JP;
Shotaro Tamai, Matsumoto, JP;
Sosuke Yamasaki, Shiojiri, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
In a liquid ejecting head, a flow channel substrate and a pressure chamber substrate are bonded by an adhesive. The pressure chamber substrate includes a first opening formed exposing at least a portion of a diaphragm to a pressure chamber space, a second opening coupling the pressure chamber space to a flow channel formed in the flow channel substrate, at least one wall portion being an inner wall portion partitioning the pressure chamber space and coupling the first opening to the second opening, at least one recess portion formed on the wall portion and recessed in a first direction from the flow channel substrate to the diaphragm, and at least one protruding portion formed on the wall portion and protruding in a direction opposite to the first direction, the protruding portion being disposed between the at least one recess portion and the first opening in a longitudinal direction.