| 摘要 |
PROBLEM TO BE SOLVED: To enable a high-density arrangement of nozzles by efficiently laying out driving circuits and the like in the case where a jetting direction of liquid droplets is controlled by driving of a plurality of pressure variable elements in an application, for example, to a printer which jets ink liquid droplets by driving of heating elements. SOLUTION: In the case where the jetting direction of liquid droplets is controlled by control of driving of the plurality of pressure variable elements 15A and 15B set at a liquid chamber, a balance of driving of the pressure variable elements 15A and 15B by a main control circuit 27 is made variable to by a secondary control circuit 31, so that a current by the secondary control circuit 31 is reduced. Accordingly, a wiring pattern 22C related to the secondary control circuit 31 is formed narrow in the width. COPYRIGHT: (C)2004,JPO&NCIPI
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