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:
Dec. 26, 2023
Filed:
Nov. 15, 2021
Seiko Epson Corporation, Tokyo, JP;
Takahiro Katakura, Okaya, JP;
Toshiro Murayama, Fujimi-Machi, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A liquid ejecting apparatus has: a liquid discharge section configured to change an inner volume of a first pressure chamber communicating with a nozzle by a first piezoelectric element; a pressure vibration section configured to change an inner volume of a second pressure chamber by a second piezoelectric element; a driving signal generation section configured to generate a discharging driving signal for the first piezoelectric element and a detection driving signal for the second piezoelectric element; and a vibration detection section that detects residual vibration of a liquid filled in the second pressure chamber after the supply of the detection driving signal. The viscous resistance of a flow path between the second pressure chamber and the common flow path is lower than the viscous resistance of a flow path between the first pressure chamber and the common flow path.