WAVEFORM GENERATING CIRCUIT AND INK JET HEAD DRIVE CIRCUIT AND INK JET RECORDING DEVICE

摘要

An ink jet head drive circuit for driving an ink-jetting piezoelectric actuator (21) provided in an ink jet head (H), comprising an analog switch (71 (72)) for outputting to a waveform generating unit (64) either one of an output voltage and a ground voltage inputted with the output voltage and the ground voltage of a D/A converter (62 (63)) kept switching, the analog switch (71 (72)) being constituted such that an input to the analog switch (71 (72)) is switched from a ground potential to an output voltage from the D/A converter (62 (63)) when a digital signal for generating a voltage rise waveform (fall waveform) by the waveform generating unit (64) is inputted to the D/A converter (62 (63)).