| 摘要 |
<p>A drive signal generator generates a series of drive signals, each including at least three primary ejecting pulses (PS1,PS2,PS3) generated at a first cycle in a unit recording period (T) and at least one auxiliary ejecting pulse (PS4) generated after a time period which is a half of the first cycle is elapsed since one of the primary ejecting pulse is generated. The primary ejecting pulses and the auxiliary ejecting pulse have an identical waveform. A pulse supplier selectively applies at least one of the primary ejecting pulses and the auxiliary pulse from the drive signal to a pressure generating element (36) such that time intervals of the supplied pulses are made constant over adjacent unit recording periods when dots having the same size are successively recorded. <IMAGE></p> |
