| 摘要 |
A driving pulse signal for forming one dot includes a first, a second, and a third main pulses applied intermittently with an intervals to eject an ink droplet, and a stabilizing pulse which is inserted between the main pulses, and which suppresses a residual vibration of an ink in a pressure chamber, generated by a main pulse applied previously. The third main pulse suppresses the residual vibration of the ink generated by the second main pulse, and also a pulse width of the third pulse is adjusted such that there is no residual vibration remained, due to application of the last main pulse. Consequently, it is possible to suppress effectively the residual vibration of the ink by the less number of the stabilizing pulses compared to the number of main pulses. As a result, an overall pulse width becomes short, and it is possible to increase the recording speed.
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