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:
Apr. 07, 2026
Filed:
Aug. 04, 2023
Canon Kabushiki Kaisha, Tokyo, JP;
Ayako Maruyama, Kanagawa, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A liquid ejection head being for liquid suction and wipe operations and enabling diaphragm plates to achieve proper amounts of displacement with low drive voltage includes first and second substrates. Ejection ports for ejecting liquid are provided at a flat first surface of the first substrate. Drive elements are provided on a second surface of the first substrate. The second substrate is joined to the second surface of the first substrate, forming pressure chambers configured to be supplied with liquid. Pressure-chamber forming portions of the first substrate form the diaphragm plates. The liquid in the pressure chambers is ejected from the ejection ports upon displacement of the diaphragm plates. The second surface of the first substrate includes the drive elements and is uneven. In the diaphragm plates, second regions surrounding first regions provided with the ejection ports have lower rigidity than the first regions.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile