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US 9,168,738 B2Granted
Liquid discharge apparatus and method of discharging liquid
AssigneeSeiko Epson Corporation
InventorsShuji Otsuka, Tadashi Kiyuna, Toshifumi Asanuma
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Abstract
A liquid discharge apparatus includes an actuator element configured and arranged to receive a drive signal to discharge a liquid, the liquid being an ink including 0.1 wt % to 10 wt % of a polar solvent. The waveform of the drive signal supplied to the actuator element includes a non-rectangular shaped pulse with a ripple being formed in a falling portion of the non-rectangular shaped pulse.
Claims7
A liquid discharge apparatus comprising:
- an actuator element configured and arranged to receive a drive signal to discharge a liquid, the liquid being an ink including 0.1 wt % to 10 wt % of a polar solvent,
- a waveform of the drive signal supplied to the actuator element including non-rectangular shaped pulses having a plurality of shapes with a ripple being formed in a falling portion of the non-rectangular shaped pulse, the drive signal supplied to the actuator element being obtained by subjecting an original drive signal to non-linear current amplification.
A method of discharging a liquid comprising:
- discharging a liquid by supplying a drive signal to an actuator element, the liquid being an ink comprising 0.1 wt % to 10 wt % of a polar solvent,
- a waveform of the drive signal supplied to the actuator element including non-rectangular shaped pulses having a plurality of shapes with a ripple being formed in a falling portion of the non-rectangular shaped pulse, the drive signal supplied to the actuator element being obtained by subjecting an original drive signal to non-linear current amplification.
Dependencies are inferred from the claim text.