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:
Jan. 30, 2024
Filed:
Mar. 28, 2022
Seiko Epson Corporation, Tokyo, JP;
Atsushi Amano, Nagano, JP;
Toru Matsuyama, Nagano, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
Provided is a liquid discharging apparatus including a drive signal output circuit that displaces between a first potential and a second potential, and a discharging portion discharging liquid, in which the drive signal output circuit includes a modulation circuit, an amplification circuit, and a demodulation circuit that includes a first capacitor and a second capacitor and outputs a drive signal, the first potential is 25 V or higher, the first capacitor and the second capacitor are coupled to each other in parallel, a change rate of an electrostatic capacitance of the first capacitor when a direct-current voltage is supplied to the first capacitor is smaller than a change rate of an electrostatic capacitance of the second capacitor when the direct-current voltage is supplied to the second capacitor, and an equivalent series resistance component of the second capacitor is smaller than an equivalent series resistance component of the first capacitor.