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. 31, 2020
Filed:
Mar. 18, 2019
Seiko Epson Corporation, Tokyo, JP;
Tetsuo Takagi, Nagano, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A liquid ejecting apparatus includes a piezoelectric element that includes a first electrode to which a drive signal is supplied and a second electrode to which a criterion voltage signal is supplied, and performs displacement by a potential difference between the first electrode and the second electrode, a cavity which is filled with a liquid, a vibration plate provided between the cavity and the piezoelectric element, and a first switching circuit that includes a first terminal to which the drive signal is supplied and a second terminal which is electrically connected to the first electrode and controls a supply of the drive signal to the first electrode. The liquid ejecting apparatus has a first mode in which charges at a first node at which the first electrode and the second terminal are electrically connected to each other are released via a parasitic diode of the first switching circuit.