Patent ID: 8588653

Claim:
A charging device comprising: a corona charger including a shield provided with an opening opposed to a photosensitive member and a discharging wire disposed in said shield and configured to electrically charge said photosensitive member; a sheet-like member configured to open and close said opening by moving substantially along a longitudinal direction of said shield; a regulating member configured to regulate a shape of said sheet-like member so that a central portion of said sheet-like member protrudes more toward said discharging wire than both end portions of said sheet-like member in a widthwise direction of said sheet-like member; and a winding-up member configured to wind up said sheet-like member with an opening movement of said sheet-like member so that a surface of which said sheet-like member is opposed to said discharging wire is directed toward a winding-up axis of said winding-up member.