Patent ID: 8160479
Filing Date: 2012-04-17
Classification: G03G

Abstract:
1. An image forming apparatus comprising: a photosensitive member; a corona charger, detachably mountable to said image forming apparatus, provided with a discharging wire for electrically charging said photosensitive member and provided with an adjusting mechanism capable of adjusting a position of said discharging wire in a state in which said corona charger is demounted from said image forming apparatus; an exposure device configured to expose light to said photosensitive member charged by said corona charger to form an electrostatic image on said photosensitive member; a developing device configured to develop the electrostatic image with toner to form a toner image on said photosensitive member; a transfer device configured to transfer the toner image from said photosensitive member onto a sheet; a detecting device configured to detect information corresponding to a surface potential of said photosensitive member at least two points, along a longitudinal direction of said corona charger, in an area in which said photosensitive member is charged by said corona charger; and an executing device configured to execute an operation in a mode in which an image, including a reference mark positioned at a reference portion along the longitudinal direction of said corona charger, used for adjusting the position of said discharging wire by said adjusting mechanism, and including an adjusting mark for adjusting a distance of said discharging wire from said photosensitive member along a longitudinal direction of said photosensitive member, is outputted on the sheet, wherein a positional relationship between the reference mark and the adjusting mark is determined on the basis of a detection result of said detecting device.