In an inkjet recording apparatus, when one set of image data is divided in the sub scanning direction into A bands, and nozzles are divided in the main scanning direction into groups each comprising A nozzles, a selector associates, within each of the group, the nozzles in the first to Ath columns with the first to Ath bands with no overlap, and, for a nozzle that is to discharge ink for one pixel or less within one set of image data, makes the nozzle perform preparatory discharge in the band associated with the nozzle by selecting, out of different ink discharge drive waveforms, a first drive waveform (1) corresponding to the minimum gradation.