| 摘要 |
An image forming apparatus includes a plurality of process cartridges. Each process cartridge includes an image carrier configured to form an image intermediately, a drive transfer member engaged with the image carrier, a drive mechanism configured to drive to rotate the image carrier via the drive transfer member, a marking member mounted on the drive transfer member and configured to indicate a rotational position of the drive transfer member, a detector configured to detect the rotational position by detecting the marking member, and a balancer mounted on the drive transfer member configured to match a weighted center of the drive transfer member with a shaft center of the image carrier. A controller is configured to adjust rotational phases of the image carriers based on results detected by the detector.
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