Corona charger including shutter

摘要

A charging device includes a corona charger, provided with an opening opposing a photosensitive member, for electrically charging the photosensitive member; a sheet-like member provided so that the sheet-like member can cover the opening; a movable device for moving the sheet-like member; and a regulating device for regulating a shape of the sheet-like member so that a central portion of the sheet-like member protrudes toward the corona charger with respect to a circumferential direction of the photosensitive member.

主权项

1. A charging device comprising:
a corona charger including a charging electrode configured to electrically charge a photosensitive member and a shield forming an opening opposed to the photosensitive member; a sheet-like member configured to open and close the opening; a moving mechanism configured to move said sheet-like member along a longitudinal direction of the opening; wherein said moving mechanism includes a movable member movable along a longitudinal direction of the opening and a fixing member fixed at a downstream free end portion of said sheet-like member with respect to a movement direction of said sheet-like member for closing the opening, wherein said fixing member and said movable member are connected with each other, said moving mechanism moves said sheet-like member by moving said movable member, connected with said fixing member, along the longitudinal direction of the opening, and wherein said movable member and said fixing member are detachably mounted to each other in such a way that when said fixing member is detached from said movable member, said fixing member remains fixed to said sheet-like member.