Image forming apparatus with charging device of corona type
AssigneeCanon Kabushiki Kaisha
InventorMasanobu Nakajima
Life of this patent
Estimating the term…
Abstract
An image forming apparatus includes a rotatable photosensitive member; a corona charger provided with an opening opposed to a surface of the photosensitive member; image forming means for forming a toner image on the photosensitive member; a shutter for opening and closing the opening relative to the photosensitive member; sliding means for sliding in contact with the photosensitive member; measuring means for measuring time elapsed from end of image formation; and control means for controlling the apparatus on the basis of an output of the measuring means such that shutter is closed and the photosensitive member is rotated in contact with the sliding means.
Claims7
An image forming apparatus comprising:
- a rotatable photosensitive member;
- a corona charger provided with an opening opposed to a surface of said photosensitive member;
- image forming means for forming a toner image on said photosensitive member;
- a shutter for opening and closing said opening relative to said photosensitive member;
- sliding means for sliding in contact with said photosensitive member;
- measuring means for measuring time elapsed from end of image formation;
- and
- control means for controlling said apparatus on the basis of an output of said measuring means such that shutter is closed and said photosensitive member is rotated in contact with said sliding means.
An image forming apparatus comprising:
- a rotatable photosensitive member;
- a corona charger provided with an opening opposed to a surface of said photosensitive member;
- image forming means for forming a toner image on said photosensitive member;
- a shutter for opening and closing said opening relative to said photosensitive member;
- sliding means for sliding in contact with said photosensitive member;
- a receiving portion for receiving a user instruction of shifting to a rest state;
- and
- control means for controlling said apparatus on the basis of an output of said receiving means such that shutter is closed and said photosensitive member is rotated in contact with said sliding means.
Dependencies are inferred from the claim text.