US 12,459,259 B2
Liquid ejecting head
Takaaki Yoshino, Nagoya (JP); Toru Kakiuchi, Chita (JP); and Taisuke Mizuno, Yokkaichi (JP)
Assigned to BROTHER KOGYO KABUSHIKI KAISHA, Nagoya (JP)
Filed by BROTHER KOGYO KABUSHIKI KAISHA, Nagoya (JP)
Filed on Dec. 21, 2023, as Appl. No. 18/392,126.
Claims priority of application No. 2023-086512 (JP), filed on May 25, 2023.
Prior Publication US 2024/0391237 A1, Nov. 28, 2024
Int. Cl. B41J 2/14 (2006.01)
CPC B41J 2/14233 (2013.01) [B41J 2002/14306 (2013.01); B41J 2002/14475 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A liquid ejecting head comprising:
a flow channel member formed with a flow channel including a nozzle and a pressure chamber connected to the nozzle;
a piezoelectric element fixed to the flow channel member and configured to apply pressure to liquid in the pressure chamber to eject droplets of the liquid from the nozzle, wherein
a natural frequency Fr of the flow channel is greater than 120 kHz, and
a diameter D [μm] of the nozzle and a taper angle θ [°] of the nozzle satisfy:

OG Complex Work Unit Math