| 摘要 |
In the present invention, the preliminary waveform driving region lies in the period in which the head is accelerated just after the head starts moving for printing until it reaches the printing starting position, and a preliminary waveform generated in the preliminary waveform driving region sways the ink in the opening of the nozzle of the head to the extent that ink is not discharged to reduce the viscosity of the ink, and the printing is performed in the usual printing region immediately after the head passes the preliminary waveform driving region. Accordingly, the head may be driven for printing before the viscosity of the ink, which is reduced by the preliminary driving motion, is increased so that ink may be more easily discharged from the nozzle when the head performs the printing.
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