US 11,701,886 B2
Liquid ejection device
Hirokazu Sekino, Chino (JP); Takeshi Seto, Shiojiri (JP); Hideki Kojima, Matsumoto (JP); Takahiro Matsuzaki, Shiojiri (JP); and Yuji Saito, Shiojiri (JP)
Assigned to SEIKO EPSON CORPORATION
Filed by Seiko Epson Corporation, Tokyo (JP)
Filed on Dec. 8, 2021, as Appl. No. 17/643,255.
Application 17/643,255 is a continuation of application No. 16/943,129, filed on Jul. 30, 2020, granted, now 11,235,576.
Claims priority of application No. 2019-140784 (JP), filed on Jul. 31, 2019.
Prior Publication US 2022/0097375 A1, Mar. 31, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. B41J 2/14 (2006.01)
CPC B41J 2/14233 (2013.01) 7 Claims
OG exemplary drawing
 
1. A liquid ejection device comprising:
a nozzle through which a liquid is ejected as a plurality of droplets;
a liquid transfer tube through which the liquid is transferred to the nozzle; and
a vibration generation unit configured to generate vibration, wherein
a frequency of the vibration generated by the vibration generation unit is equal to or less than the droplet frequency.