DRIVE DEVICE
Number of patents in Portfolio can not be more than 2000
United States of America
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Issued Date -
Mar 6, 2025
app pub date -
May 31, 2024
filing date -
May 31, 2024
priority date (Note) -
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status (Latency Note)
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Abstract
A drive device includes a drive circuit to output a drive signal that is to be applied to an actuator of a liquid ejection head for ejecting liquid droplets. The drive signal includes an adjustment ejection waveform portion that includes a first portion having an expansion pulse that decreases pressure in a pressure chamber of the actuator and a second portion having a contraction pulse that increases pressure in the pressure chamber. The contraction pulse includes voltage increase changes that change the voltage applied to the actuator stepwise and a return pulse that is between a pair of voltage increase changes. The return pulse changes from a first voltage level that is less than a maximum voltage level of the contraction pulse to a second voltage level that is greater than a minimum voltage level of the expansion pulse.
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