Cartridge and image forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorsAkinobu Hirayama, Takahito Ueno, Toshiaki Takeuchi
Life of this patent
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Abstract
A cartridge detachably mountable to a main assembly of an image forming apparatus includes a photosensitive drum; a discharging path for permitting movement of a developer removed from the drum, the discharging path including a developer discharge opening and a movable portion through which the developer is movable and which is movable between a retracted position in an upstream side with respect to a developer moving direction through the discharge opening and a advanced position in a downstream side with respect to the developer moving direction; and a sealing portion for closing the discharging path by contacting the movable portion at a position different from that of the discharge opening.
Claims43
A cartridge comprising:
- a photosensitive member;
- a discharging path configured to permit movement of developer removed from the photosensitive member, the discharging path including a developer discharge opening and a movable portion through which the developer is movable, the movable portion being movable between (i) a retracted position on an upstream side with respect to a developer moving direction through the discharge opening and (ii) an advanced position on a downstream side with respect to the developer moving direction;
- and
- a sealing portion configured to close the discharging path by contacting the movable portion at a position different from the position of the discharge opening.
A cartridge comprising:
- a photosensitive member;
- a feeding path configured to permit movement of developer removed from the photosensitive member, the feeding path including a hollow inner cylinder and a hollow outer cylinder surrounding an outer periphery of the inner cylinder, the hollow outer cylinder being reciprocal along the inner cylinder between a retracted position and an advanced position;
- and
- a sealing portion for closing a developer flow path formed between the inner cylinder and the outer cylinder.
Dependencies are inferred from the claim text.