CHARGE LEAKAGE PREVENTION FOR INKJET PRINTING
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United States of America Patent
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app pub date -
May 26, 2009
filing date -
Nov 5, 2004
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Abstract
Charge leakage prevention and voltage drift prevention on a droplet ejection device for an inkjet printer. In one method to prevent charge leakage on a droplet ejection device with a switch and a piezoelectric actuator, the method includes controlling the switch to drive the piezoelectric actuator with the waveform input signal during a droplet firing period, and controlling the switch to drive the piezoelectric actuator with a constant voltage level during a non-firing period.
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