| 摘要 |
A drive IC is provided for suitably driving piezoelectric elements of an ink jet printer. The drive IC includes a plurality of drive output pads, a plurality of data input pads for feeding plural kinds of drive data, a plurality of shift registers each connected to a corresponding one of the data input pads, a plurality of analog switches connected to each of the drive output pads, and a selecting circuit for selectively feeding one of plural kinds of drive voltages to each of the drive output pads through a selected one of the analog switches according to the drive data.
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