| 摘要 |
A recording head provided with a plurality of nozzles, a plurality of pressure chambers, each communicated with one nozzle, and a plurality of pressure generating elements, each associated with one pressure chamber and actuated to eject ink from one associated nozzle. An ejection controller specifies a nozzle from which an ink droplet having the least weight is ejected as a reference nozzle. A driving signal generator generates a driving signal applied to the respective pressure generating elements. The drive signal has a driving voltage determined such that an ink droplet ejected from the reference nozzle has a predetermined flight velocity or more.
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