| 摘要 |
<p>An ink jet head drive circuit for driving an ink-jetting piezoelectric actuator (21) provided in an ink jet head (H), comprising one D/A converter (62) for converting a digital signal into an analog signal for outputting, and a waveform generating unit (64) for receiving an output voltage from the D/A converter (62) and for generating a voltage rise waveform when the output voltage from the D/A converter (62) is larger than a specified potential between maximum and minimum values of the output voltage, while generating a voltage rise waveform when the output voltage from the converter (62) is smaller the specified potential.</p> |
