| 摘要 |
An image-forming apparatus includes an image-forming member assembly including a photosensitive member, a developing unit, and a rotating unit; a driving unit; a positioning member having a positioning hole in which a shaft of the photosensitive member is rotatably supported and positioned; and a support member having a support hole that has a guide side to guide a rotating shaft of the rotating unit and supports the rotating shaft in a direction toward and away from the positioning hole. When a force received by the rotating shaft while the driving unit drives the rotating unit is divided into a first component force along the guide side and a second component force orthogonal to the guide side, the first component force has a direction in which a contact force of the shaft of the photosensitive member against an edge of the positioning hole is increased.
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