Title:
Liquid discharge device and residual vibration detection method
Document Type and Number:
Japanese Patent JP6326863
Kind Code:
B2
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.
Inventors:
Otokita Kenji
Application Number:
JP2014036405A
Publication Date:
May 23, 2018
Filing Date:
February 27, 2014
Export Citation:
Assignee:
Seiko Epson Corporation
International Classes:
B41J2/165; B41J2/01
Domestic Patent References:
| JP2011140244A | ||||
| JP2004284190A | ||||
| JP2007038654A |
Foreign References:
| US20110193903 |
Attorney, Agent or Firm:
Kazuaki Watanabe
Keisuke Nishida
Satoshi Nakai
Keisuke Nishida
Satoshi Nakai