Patent ID: 9004637
Filing Date: 2015-04-14
Classification: B41J

Abstract:
1. An image forming apparatus comprising: a discharge disabling unit configured to disable a discharge operation of a defective nozzle, which is in a defective discharge state, among a plurality of nozzles configured to discharge liquid droplets to a recording medium; a complement unit configured to complement an image defect using two nozzles on either side of the defective nozzle of which discharge operation is disabled; a threshold value change unit configured to change a discharge disable threshold value depending on a discharge order between the nozzles which complement the image defect and nozzles adjacent to the nozzles which complement the image defect; and a determination unit configured to determine whether a value obtained by quantifying a degree of defective state of the defective nozzle is greater than the discharge disable threshold value, which has been changed by the threshold value change unit, wherein, in a case where the determination unit determines that the value obtained by quantifying the degree of defective state of the defective nozzle is greater than the discharge disable threshold value, which has been changed by the threshold value change unit, the discharge disabling unit disables the discharge operation of the defective nozzle.