| 摘要 |
The present invention is applied to a printer that discharges ink drops by driving, for example, heater elements. In the case where a plurality of variable pressure generator elements are driven to control the direction in which the drop is discharged, the present invention makes it possible to lay out drive circuits and so on efficiently so as to arrange nozzles in a high density. According to the present invention, in the case where a plurality of variable pressure generator elements 15A and 15B are provided for a liquid chamber, and are controlled to control the direction in which the drop is discharged, a sub-control circuit 31 varies the balance between the variable pressure generator elements 15A and 15B driven by a main control circuit 27. Since the current concerning the sub-control circuit 31 is small, the wiring pattern concerning the sub-control circuit 31 is formed in a narrow width. <IMAGE>
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