Liquid ejecting head
AssigneeBrother Kogyo Kabushiki Kaisha
InventorsTAKAAKI YOSHINO, TORU KAKIUCHI, TAISUKE MIZUNO
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Abstract
There is provided a liquid ejecting head including a flow channel member and a piezoelectric element. The flow channel member includes a flow channel including a nozzle and a pressure chamber connected to the nozzle. The piezoelectric element is fixed to the flow channel member that applies pressure to the liquid in the pressure chamber and causes droplets to be ejected from the nozzle. The natural frequency Fr of the flow channel is 120 kHz or higher. The diameter D [μm] of the nozzle and the taper angle θ [° ] of the nozzle satisfy the relationships: θ≥2.1×D−36.4, D>22 μm, and θ<45°.
Claims9
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:
- θ
- ≥
- 2.1
- ×
- D
- -
- 36.4
- ,
- D
- >
- 22
-
- µm
- ,
- and
-
- θ
- <
- 45
-
- °
Dependencies are inferred from the claim text.