| 摘要 |
An image forming apparatus includes an image bearing member, wherein a toner image is formed on the image bearing member and is transferred onto a recording material, thus forming an image on the recording material; a shaft for rotating the image bearing member, wherein the shaft is provided with a first projection and a second projection, and the image bearing member is provided with a first engaging portion and a second engaging portion which are engageable with the first projection and the second projection, respectively, and wherein the first engaging portion is abuttable to the first projection at downstream and upstream sides of the first projection with respect to a rotational direction of the shaft, and the second engaging portion is abuttable to the second projection at a downstream side of the second projection, and wherein a gap is provided between the second engaging portion and the second projection at an upstream side of the second projection.
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