Patent ID: 8833903
Filing Date: 2014-09-16
Classification: B41J

Abstract:
1. An inkjet recording apparatus comprising: a recording unit configured to record an image on a sheet in a recording region by causing a recording head including a plurality of nozzle arrays to reciprocate over a recording distance along a surface of the sheet in a direction in which the plurality of nozzle arrays is arranged; an ink receiver configured to receive ink ejected outside the sheet in preliminary ejection from a nozzle array that has reached the ink receiver, wherein an ink receiving portion of the ink receiver has a size that is less than a size of the plurality of nozzle arrays; and a control unit configured to control the recording unit to reciprocate the recording head and to determine a reversing position at which the recording head is reversed in the reciprocation based on a recording distance of the recording region and on which of the plurality of nozzle arrays is or are to be used for recording, wherein, in a case where a last nozzle array to be used for recording will reach an end of the recording distance at a time when a trailing nozzle array reaches the ink receiver, the control unit determines the reversing position of the reciprocation such that (i) the trailing nozzle array and any nozzle arrays behind the trailing nozzle array pass over and eject onto the ink receiver in a single scan and (ii) a distance of the reciprocation beyond the recording distance is a minimum distance, wherein the plurality of nozzle arrays includes a second nozzle array positioned between a first nozzle array and a third nozzle array and the control unit controls so that the first nozzle array ejects onto the sheet and the third nozzle array ejects onto the ink receiver while the second nozzle array is prevented from ejecting.