CPC G03G 15/751 (2013.01) [G03G 15/757 (2013.01); G03G 21/1647 (2013.01); G03G 21/186 (2013.01); G03G 21/16 (2013.01); G03G 21/18 (2013.01)] | 22 Claims |
1. 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.
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