Patent ID: 8469473

Claim:
An inkjet recording apparatus comprising: a recording head, driven by each drive phase of a three-phase current, having two sets of nozzle rows of three nozzle rows disposed in parallel in a main scanning direction and in which a plurality of nozzles are disposed in a staggered arrangement with an interval of L/3 in the main scanning direction, where L denotes a pixel pitch, wherein an interval between adjacent nozzles in a sub-scanning direction in a same nozzle row is set to be two times the pixel pitch, and the nozzles in one set of the nozzle rows are displaced by one pixel pitch in the sub-scanning direction with respect to the nozzles in another set of the nozzle rows; and a control device to drive each nozzle row of the recording head in a sequence from a nozzle row provided at an end to a nozzle row provided in front in a relative moving direction of the recording head with respect to a recording medium, and to move the recording head at a moving speed of 2×L×f in the main scanning direction, where f represents an ejection frequency for each nozzle row of the recording head, wherein when one scan by the recording head in the main scanning direction is completed, the control device moves the recording medium with respect to the recording head in the sub-scanning direction, which is perpendicular to the main scanning direction, by a distance of a predetermined multiple of the pixel pitch, and in a subsequent scan in the main scanning direction, the control device controls the recording head so that ink is ejected from each nozzle to a pixel position other than a pixel position where the ink has landed in the preceding scan by the recording head on the recording medium so as to record an image on the recording medium by landing the ink on each pixel on the recording medium.