| 摘要 |
In an ink-jet printer, on the basis of the previous, current, and next drive conditions held in latch circuits 252, 253, and 254, an output control section 255 switches the current drive waveform to be supplied to a pressure generation device. Therefore, the vibrating state of a vibrating state or that of an ink meniscus can be optimized by the time the next expelling of ink is performed. Accordingly, there is no need for consumption of time to wait for the next expelling of ink until the vibration of the vibrating plate or that of meniscus subsides sufficiently, thus resulting in a reduction in time intervals between ink expelling operations and implementing high-speed printing operations.
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