Patent ID: 9737327
Date: 2017-08-22
CPC Classifications: A61B

Claim:
1. A fluid ejection device which ejects a fluid, comprising: an ejection tube which ejects the fluid; a fluid chamber which communicates with the ejection tube; a fluid supplying unit which supplies the fluid to the fluid chamber at a predetermined flow rate; a pulsation generator which causes the fluid in the fluid chamber to be ejected from the ejection tube; and a controller which controls operation of the pulsation generator to cause the fluid to be ejected periodically from the ejection tube; wherein a maximum frequency at which the controller causes the fluid to be ejected is fmax [Hz], and an amount of change in volume of the fluid chamber when the controller causes the pulsation generator to operate by applying a maximum value of a drive voltage is V the fluid supplying unit is configured to supply the fluid at the predetermined flow rate above V