SWITCHING CIRCUIT OF ACTUATOR IN INK JET PRINTER

摘要

PURPOSE: A switching circuit of an actuator in an ink jet printer is provided to perform direct switching a voltage applied to upper electrodes of actuators of which lower electrodes are metal vibration plates according to a control pulse signal generated from the switching circuit. CONSTITUTION: A switching circuit of an actuator in an ink jet printer includes a first switching element(Q1) to be turned on or off according to a state of a control pulse signal generated from the switching circuit of the actuator, and a second switching element(Q2) to be turned on or off in response to the turning on or off operation of the first switching element for supplying a driving voltage to upper electrodes of a predetermined number of PZT actuators when turned on.