Patent ID: 7802863

Claim:
An ink-jet recording apparatus comprising: one or more ink-jet heads each including a passage unit and a plurality of ejection energy appliers, the passage unit being formed with a plurality of individual ink passages each extending from an exit of a common ink chamber through a pressure chamber to a nozzle, the plurality of ejection energy appliers applying ejection energy to ink in a plurality of pressure chambers; a drive waveform generation circuit which generates m different drive waveforms (m is equal to or greater than three) indicating driving patterns of the ejection energy applier; a plurality of drive waveform selection circuits each of which selects, based on a first section signal, n drive waveforms (n is smaller than m, and equal to or greater than two) from the m drive waveforms generated by the drive waveform generation circuit; and a plurality of drive signal generation circuits at least one of which is provided for each drive waveform selection circuit, and each of which selects in every predetermined recording cycle one drive waveform for one nozzle from the n drive waveforms selected by the drive waveform selection circuit based on a second selection signal, and generates a drive signal for driving the ejection energy applier corresponding to the one nozzle based on the drive waveform thus selected, wherein: at least one of the n drive waveforms selected by any one of the plurality of drive waveform selection circuits is the same as the drive waveform selected by another one of the drive waveform selection circuits; and at least one of the n drive waveforms selected by the drive waveform selection circuit is not selected by another one of the drive waveform selection circuits.