| 摘要 |
The image forming apparatus includes a transfer rotary member for forming a primary transfer portion (N) between a photosensitive drum and an intermediate transfer belt. The transfer rotary member includes multiple rotary members whose diameters are different, into which the transfer rotary member is divided in a direction orthogonal to a moving direction of the intermediate transfer belt. The transfer rotary member is arranged so as to contact a surface of the intermediate transfer belt on a side opposite to a surface with which multiple photosensitive drums come into contact at the primary transfer portions (N), on a downstream side in the moving direction of the intermediate transfer belt with respect to a contact portion between the intermediate transfer belt and each photosensitive drum, the intermediate transfer belt being arranged so as to protrude on the photosensitive drum side.
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