Patent ID: 8894177

Claim:
A method for recording with a recording head, wherein the recording head includes a nozzle array having a plurality of nozzles for discharging ink arranged in a predetermined direction and performs reciprocating movement in a scanning direction crossing the predetermined direction, the method comprising: performing first recording for recording a first dot pattern on a recording medium by driving a nozzle group including a series of some nozzles, but not all of the nozzles, among the plurality of nozzles and without driving nozzles that are not included in the nozzle group among the plurality of nozzles, to discharge ink onto the recording medium; conveying the recording medium in the predetermined direction, after the first recording, for a distance corresponding to a width of the nozzle group; performing second recording for recording a second dot pattern on the conveyed recording medium by driving the nozzle group to discharge ink onto the recording medium; obtaining, using an optical sensor, a signal value of an image regarding the predetermined direction based on the first dot pattern and the second dot pattern; and determining, based on the obtained signal value, whether a discharge nozzle performing defective discharge exists among the nozzle group.