Drum unit, cartridge, electrophotographic image forming apparatus and coupling member
AssigneeCanon Kabushiki Kaisha
InventorsTomonori Mori, Tetsuo Uesugi
Life of this patent
Estimating the term…
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.
Claims110
A drum unit for a cartridge, the drum unit comprising:
- (1) a photosensitive drum;
- and
- (2) a coupling member operatively connected to the photosensitive drum, the coupling member including:
- an engageable member having a driving force receiving portion configured to receive a driving force for rotating the photosensitive drum,
- a holding member configured to slidably hold the engageable member, and
- an urging member configured to urge the engageable member,
- wherein the engageable member is provided with a projection including the driving force receiving portion, and
- wherein the projection is disposed inside of the photosensitive drum and the projection projects inwardly at least in a radial direction of the drum unit.
A cartridge comprising:
- (1) a rotatable member configured to rotate while carrying a developer on a surface thereof;
- and
- (2) a coupling member including:
- an engageable member having a driving force receiving portion configured to receive a driving force for rotating the rotatable member,
- a holding member configured to slidably hold the engageable member so that the engageable member is slidable relative to the holding member at least in a radial direction of the coupling member, and
- an urging member configured to urge the engageable member,
- wherein the engageable member includes a projection provided with the driving force receiving portion.
A coupling member capable of engaging with and disengaging from a driving shaft provided in a main assembly of an electrophotographic image forming apparatus, the coupling member comprising:
- (1) an engageable member including a driving force receiving portion configured to receive a driving force for rotating a rotatable member carrying a developer on a surface thereof;
- (2) a holding member configured to slidably hold the engageable member so that the engageable member is slidable relative to the holding member inwardly at least in a radial direction of the coupling member;
- and
- (3) an urging member configured to urge the engageable member,
- wherein the driving force receiving portion extends inwardly at least in a radial direction of the coupling member.
A cartridge comprising:
- a frame;
- a drum unit rotatably supported by the frame, the drum unit including a photosensitive drum and a coupling member,
- wherein the coupling member is operatively connected to the photosensitive drum, and the coupling member includes:
- an engageable member having a driving force receiving portion configured to receive a driving force for rotating the photosensitive drum,
- a holding member configured to slidably hold the engageable member, and
- an urging member configured to urge the engageable member,
- wherein the engageable member is provided with a projection including the driving force receiving portion, and
- wherein the projection is disposed inside of the photosensitive drum and the projection projects inwardly at least in a radial direction of the drum unit.
Dependencies are inferred from the claim text.