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, 2026
Filed:
Jun. 05, 2024
Liquid ejection apparatus, liquid ejection head, and method of controlling liquid ejection apparatus
Seiko Epson Corporation, Tokyo, JP;
Daichi Orihara, Nagano, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A liquid ejection apparatus includes an ejection portion including a piezoelectric element driven, a pressure chamber filled with a liquid and having a volume that changes according to driving, and a nozzle ejecting the liquid in the pressure chamber according to a change of the volume of the pressure chamber, a detection unit detecting a vibration signal indicating a potential of the piezoelectric element that varies according to a vibration remaining in the ejection portion after driving of the piezoelectric element and generating a detection signal based on the detected vibration signal, and a setting unit setting a signal amplification factor based on liquid characteristic information related to characteristics of the liquid ejected by the ejection portion and element characteristic information related to characteristics of the piezoelectric element, wherein the detection unit generates the detection signal by amplifying the vibration signal according to the signal amplification factor set by the setting unit.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile