High frequency droplet ejection device and method
AssigneeFUJIFILM Dimatix, Inc.
InventorsRobert Hasenbein, Paul Hoisington, Deane Gardner, Steven Barss
Life of this patent
Estimating the term…
Abstract
In general, in one aspect, the invention features a method for driving a droplet ejection device having an actuator, including applying a multipulse waveform that includes two or more drive pulses to the actuator to cause the droplet ejection device to eject a single droplet of a fluid, wherein a frequency of the drive pulses is greater than a natural frequency, fj, of the droplet ejection device.
Claims26
1-41. (canceled)
A method for driving a droplet ejection device having an actuator, comprising:
- applying a multipulse waveform comprising two or more drive pulses to the actuator to cause the droplet ejection device to eject a single droplet of a fluid, wherein each pulse has an amplitude, the amplitude of the final pulse being greater than the amplitude of an earlier pulse,
- wherein a frequency of the drive pulses is greater than a natural frequency, fj, of the droplet ejection device.
A method for driving a droplet ejection device having an actuator, comprising:
- applying a multipulse waveform comprising two or more fire pulses to the actuator to cause the droplet ejection device to eject a single droplet of a fluid,
- wherein each pulse causes fluid to protrude from a nozzle of the droplet ejection device, and a frequency of the fire pulses is greater than a natural frequency, fj, of the droplet ejection device.
A method for driving a droplet ejection device having an actuator, comprising:
- applying a multipulse waveform comprising two or more drive pulses to the actuator to cause the droplet ejection device to eject a single droplet of a fluid,
- wherein each pulse has a pulse width, the pulse width of the final pulse being greater than the pulse width of an earlier pulse, and a frequency of the drive pulses is greater than a natural frequency, fj, of the droplet ejection device.
Dependencies are inferred from the claim text.