Patent ID: 7986889
Filing Date: 2011-07-26
Classification: G03G

Abstract:
1. An image forming apparatus comprising: a plurality of photosensitive members; a plurality of discharging units respectively facing the plurality of photosensitive members; a plurality of high-voltage power supply units which are provided for a plurality of charging units and supply power to the plurality of discharging units; a discharge detection unit that detects abnormality in the plurality of discharging units while the plurality of high-voltage power supply units is supplying power to the plurality of discharging units, respectively; a controller which controls the output of one of the high-voltage power supply units having the largest output to be smaller when the discharge detection unit detects abnormality; and a determination unit which, in a state where the controller controls the output of the one of the high-voltage power supply units, determines whether abnormality occurs in the discharging unit corresponding to the one of the high-voltage power supply units based on the detection state of the discharge detection unit.