Mitigating effects of crosstalk in an inkjet head
AssigneeRicoh Company, Ltd.
InventorsHiroshi Nishimura, Shogo Nobumori
Life of this patent
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Abstract
Systems and methods of mitigating the effects of crosstalk in an inkjet head. An inkjet head has ink channels that jet droplets of a liquid material using piezoelectric actuators. Drive waveforms provided to the piezoelectric actuators include jetting pulses that cause activation of the piezoelectric actuators to jet the droplets from the ink channels. When crosstalk exists between the ink channels of the inkjet head due to the piezoelectric actuators, the amplitude of the jetting pulses are modified to mitigate the crosstalk between the ink channels.
Claims19
A system comprising:
- an inkjet head comprising a plurality of ink channels in a row that jet droplets of a liquid material onto a medium using piezoelectric actuators;
- a jetting pulse generator that selectively provides drive waveforms to the piezoelectric actuators in the row, wherein the drive waveforms include jetting pulses that cause activation of the piezoelectric actuators to jet the droplets from the ink channels;
- and
- a compensation controller that identifies a crosstalk value indicating a type of crosstalk between the ink channels in the row for the inkjet head, and modifies the drive waveforms output by the jetting pulse generator and selectively provided to the piezoelectric actuators to increase an amplitude of each of the jetting pulses or decrease the amplitude of each of the jetting pulses based on the type of crosstalk.
A method of mitigating crosstalk in an inkjet head, wherein the inkjet head includes a plurality of ink channels in a row that jet droplets of a liquid material onto a medium using piezoelectric actuators, the method comprising:
- selectively providing drive waveforms to the piezoelectric actuators in the row with a jetting pulse generator, wherein the drive waveforms include jetting pulses that cause activation of the piezoelectric actuators to jet the droplets from the ink channels;
- identifying a crosstalk value indicating a type of crosstalk between the ink channels in the row for the inkjet head;
- and
- modifying the drive waveforms output by the jetting pulse generator and selectively provided to the piezoelectric actuators to increase an amplitude of each of the jetting pulses or decrease the amplitude of each of the jetting pulses based on the type of crosstalk.
A system comprising:
- a drive circuit that connects to an inkjet head having ink channels in a row that jet droplets of a liquid material onto a medium using piezoelectric actuators;
- the drive circuit selectively provides drive waveforms to the piezoelectric actuators, wherein the drive waveforms include jetting pulses that cause activation of the piezoelectric actuators to jet the droplets from the ink channels;
- and
- the drive circuit identifies a crosstalk value indicating a type of crosstalk between the ink channels in the row for the inkjet head, and modifies the drive waveforms selectively provided to the piezoelectric actuators to increase an amplitude of each of the jetting pulses or decrease the amplitude of each of the jetting pulses based on the type of crosstalk.
Dependencies are inferred from the claim text.