US 11,813,862 B2
Liquid ejecting apparatus and drive method of liquid ejecting apparatus
Mikiya Yajima, Matsumoto (JP); and Shinichi Itaya, Matsumoto (JP)
Assigned to Seiko Epson Corporation, Tokyo (JP)
Filed by Seiko Epson Corporation, Tokyo (JP)
Filed on Sep. 3, 2021, as Appl. No. 17/466,295.
Claims priority of application No. 2020-149657 (JP), filed on Sep. 7, 2020.
Prior Publication US 2022/0072856 A1, Mar. 10, 2022
Int. Cl. B41J 2/045 (2006.01); B41J 2/14 (2006.01)
CPC B41J 2/04588 (2013.01) [B41J 2/04528 (2013.01); B41J 2/04563 (2013.01); B41J 2/04581 (2013.01); B41J 2/04596 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A liquid ejecting apparatus comprising:
an ejection section that includes
a nozzle which ejects a liquid,
a pressure chamber which communicates with the nozzle, and
a piezoelectric actuator which is configured to impart a pressure fluctuation to the liquid in the pressure chamber;
a drive waveform generation section that is configured to generate a drive waveform including a non-ejection vibration pulse which, when supplied to the piezoelectric actuator, imparts the pressure fluctuation to the liquid in the pressure chamber such that the liquid is not ejected from the nozzle;
a selection section that is configured to select one of supply and non-supply of the non-ejection vibration pulse to the piezoelectric actuator;
a temperature detection section that is configured to detect the temperature of the liquid;
a maintenance section that is configured to perform maintenance processing of discharging the liquid in the ejection section; and
a control section that is configured to control supply of the non-ejection vibration pulse to the piezoelectric actuator in accordance with a temperature of the liquid in the pressure chamber,
wherein the control section controls the selection section, before performing the maintenance processing, such that even when the result of detection by the temperature detection section is lower than a predetermined temperature, the non-ejection vibration pulse is not supplied to the piezoelectric actuator.