Patent ID: 8849152
Filing Date: 2014-09-30
Classification: G03G

Abstract:
1. A charging device comprising: a corona charger including a grid electrode; a cleaning member configured to clean the grid electrode; a sheet-type shutter configured to open/close an opening of the corona charger; a drive source configured to drive both the cleaning member and the shutter in a longitudinal direction of the corona charger, and a control unit configured to control drive of the drive source such that, when the shutter is moved in a closing direction of the opening of the corona charger after image formation is finished, the cleaning member and the shutter are driven at a first speed, and when the shutter is moved in an opening direction of the opening of the corona charger at least from when power is turned on until image formation is started, the cleaning member and the shutter are driven at a second speed higher than the first speed.