Abstract: A head driving unit the generates a driving waveform, each driving waveform including a plurality of driving pulses, and selects one or more driving pulses to be applied to a liquid drop discharging head in response to data corresponding to an image. By selecting a plurality of selection signals that defines the driving pulses to be applied to the liquid discharging head, the head driving unit can change a recording density or record multiple value images.

Abstract: An inkjet recording apparatus and method reduces band-like unevenness in a recorded image which unevenness is generated in relation to an interlace printing method. A recording head has a plurality of nozzles arranged at a uniform interval D in a sub-scanning direction. A control unit controls a scanning operation so that k main scanning operations are performed within the interval D, where k is an integer equal to or greater than 2. A part of an area recorded by the nth main scanning operation is overlapped with a part of an area recorded by the (n+k)th main scanning operation, where n is an integer equal to or greater than 1. A part of dots included in the overlapping area is recorded by the nth main scanning operation so that the rest of the dots included in the overlapping area are complementarily recorded by the (n+k)th main scanning operation.