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:
Feb. 11, 2025
Filed:
Feb. 06, 2023
Seiko Epson Corporation, Tokyo, JP;
Masanori Mikoshiba, Shimosuwa-machi, JP;
Motoki Takabe, Shiojiri, JP;
Takanori Aimono, Matsumoto, JP;
Jingling Wang, Shiojiri, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A liquid discharge apparatus includes a pressure chamber substrate laminated on a first surface of a diaphragm and including a partition wall partitioning a pressure chamber communicating with a nozzle for discharging liquid, a piezoelectric element laminated on a second surface of the diaphragm and including a first active portion that overlaps a center of the pressure chamber when viewed in a thickness direction of the diaphragm and a second active portion that overlaps the pressure chamber at a position closer to an outer edge of the pressure chamber than the first active portion, and a drive signal generation portion that generates a drive signal, and a shrinkage step is executed in which a first period during which a first shrinkage element is supplied to the first active portion and a second period during which a second shrinkage element is supplied to the second active portion overlap.