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US 2021/0341870 A1Published application
Drum unit, cartridge, electrophotographic image forming apparatus and coupling member
AssigneeCanon Kabushiki Kaisha
InventorsTomonori Mori, Tetsuo Uesugi
Life of this patent
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Abstract
A drum unit includes a photosensitive drum in a coupling member. The coupling member includes an engageable member having a driving force receiving portion which is capable of entering a recess of a driving shaft to receive a driving force for rotating photosensitive drum. The coupling member includes a holding member configured to hold said engageable member so as to be slidable at least in a radial direction of said drum unit.
Claims23
-277. (canceled)
A drum unit for a cartridge, the drum unit comprising:
- a photosensitive drum;
- and
- a coupling operatively connected to the photosensitive drum, the coupling including:
- a slidable member,
- a holding member including a guide configured to guide the slidable member such that the slidable member is slidable relative to the holding member between a first position and a second position,
- a stopper configured to stop movement of the slidable member when the slidable member is in the first position;
- and
- a spring configured to urge the slidable member towards the stopper,
- wherein a tip of the slidable member is positioned closer to an axis of the coupling when the slidable member is positioned in the first position than when the slidable member is positioned is in the second position, and
- wherein an open space is formed in the coupling between the tip of the slidable member and the axis of the coupling when the slidable member is in the first position.
7 more elements
A cartridge comprising:
- a casing;
- a rotatable member configured to bear toner on an outer peripheral surface thereof, the rotatable member being rotatably supported by the casing;
- and
- a coupling operatively connected to the rotatable member, the coupling including:
- a slidable member,
- a holding member including a guide configured to guide the slidable member such that the slidable member is slidable relative to the holding member between a first position and a second position,
- a stopper configured to stop movement of the slidable member when the slidable member is in the first position;
- and
- a spring configured to urge the slidable member towards the stopper,
- wherein a tip of the slidable member is positioned closer to an axis of the coupling when the slidable member is positioned in the first position than when the slidable member is positioned is in the second position, and
- wherein an open space is formed in the coupling between the tip of the slidable member and the axis of the coupling when the slidable member is in the first position.
8 more elements
Dependencies are inferred from the claim text.