Drive device and liquid ejection device
AssigneeRISO Technologies Corporation
InventorsYusuke KAJIURA, Sota HARADA
Life of this patent
Estimating the term…
Abstract
According to one embodiment, a drive device for a liquid ejection device or the like includes a drive circuit configured to output a drive waveform to an actuator of a liquid ejection unit. The actuator has a charge-discharge time constant. The drive waveform during a non-initial portion makes a transition from a first potential higher than an intermediate potential to a second potential lower than the intermediate potential and then a transition from the second potential to the intermediate potential within a time period less than or equal to the charge-discharge time constant.
Claims20
A drive device, comprising:
- a drive circuit configured to output a drive waveform to an actuator of a liquid ejection unit, wherein
- the actuator has a charge-discharge time constant, and
- the drive waveform in a non-initial portion makes, within a time period less than or equal to the charge-discharge time constant, a transition from a first potential higher than an intermediate potential to a second potential lower than the intermediate potential and then a transition from the second potential to the intermediate potential.
A liquid ejection device, comprising:
- a liquid ejection head including an actuator;
- and
- a drive device including a drive circuit, the drive circuit configured to output a drive waveform to the actuator, wherein
- the actuator has a charge-discharge time constant, and
- the drive waveform in a non-initial portion makes, within a time period less than or equal to the charge-discharge time constant, a transition from a first potential higher than an intermediate potential to a second potential lower than the intermediate potential and then a transition from the second potential to the intermediate potential.
A printer, comprising:
- a sheet conveying apparatus;
- an inkjet head including an actuator and configured to eject ink towards a sheet conveyed by the sheet conveying apparatus;
- and
- a drive device including a drive circuit, the drive circuit configured to output a drive waveform to the actuator, wherein
- the actuator has a charge-discharge time constant, and
- the drive waveform in a non-initial portion makes, within a time period less than or equal to the charge-discharge time constant, a transition from a first potential higher than an intermediate potential to a second potential lower than the intermediate potential and then a transition from the second potential to the intermediate potential.
Dependencies are inferred from the claim text.