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. 01, 2015
Filed:
Feb. 10, 2015
Seiko Epson Corporation, Tokyo, JP;
Kenji Otokita, Yamagata-mura, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A liquid discharge apparatus includes: a head having a piezoelectric element that vibrates a diaphragm, a pressure chamber where an interior pressure is increased or decreased by vibration of the diaphragm, and a nozzle communicating with the pressure chamber to discharge a liquid inside the pressure chamber according to increasing and decreasing of the interior pressure; a drive unit that outputs a drive signal which becomes a first potential during a first period, becomes a second potential during a second period following the first period, and becomes a third potential, which is a potential between the first potential and the second potential, during a third period following the second period; a detection unit that detects a residual vibration inside the pressure chamber; and a control unit capable of modifying the potential of the third potential within a range between the first potential and the second potential.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile