| 摘要 |
An image forming apparatus which is capable of reducing a color misalignment in a color overlapping process, and a color misalignment due to variation of the circumferential length of an intermediate transfer member due to an environmental change over time during a successive copy operation. The image forming apparatus carries out image formation by primarily transferring an image electrophotographically formed on an image carrier onto the rotatably driven intermediate transfer member, and then secondarily transferring the images on the intermediate transfer member onto a recording medium. An image forming operation of primarily transferring the image onto the intermediate transfer member is controlled according to the length of the intermediate transfer member in a circumferentially moving direction thereof and a variation of a predetermined parameter relating to the intermediate transfer member.
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