US 12,337,337 B2
Liquid ejection nozzle and liquid ejection device
Tomoki Abe, Matsumoto (JP); and Osamu Katsuda, Matsumoto (JP)
Assigned to SEIKO EPSON CORPORATION, Tokyo (JP)
Filed by SEIKO EPSON CORPORATION, Tokyo (JP)
Filed on Mar. 29, 2022, as Appl. No. 17/657,102.
Claims priority of application No. 2021-059711 (JP), filed on Mar. 31, 2021.
Prior Publication US 2022/0314242 A1, Oct. 6, 2022
Int. Cl. B05B 1/14 (2006.01); B05B 7/04 (2006.01)
CPC B05B 1/14 (2013.01) [B05B 7/0416 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A liquid ejection nozzle that has a nozzle hole and ejects a liquid from the nozzle hole in an ejection direction toward a target subject, the liquid ejection nozzle comprising:
a nozzle plate having the nozzle hole; and
a pressing member having a through hole having a diameter larger than a diameter of the nozzle hole at a position corresponding to the nozzle hole in the ejection direction, wherein
the pressing member is configured to press the nozzle plate from a downstream side in the ejection direction,
a surface of the nozzle plate on the ejection direction is in contact with a surface of the pressing member on a side opposite to the ejection direction,
a length of the through hole corresponds to a thickness of the pressing member in the ejection direction, and
the diameter of the through hole is equal to or less than the thickness of the pressing member.