Image forming apparatus

An image forming apparatus configured to execute an image forming operation of forming a color image on a sheet, the image forming apparatus comprising:

• a photosensitive drum;
• a rotary including a plurality of developing rollers, the rotary being rotatable to a plurality of development postures during an execution of the image forming operation, one of the plurality of developing rollers facing the photosensitive drum in a case where the rotary takes each of the plurality of development postures;
• an intermediate transfer member to which a toner image is transferred from the photosensitive drum;
• a transfer unit configured to transfer the toner image borne on the intermediate transfer member to the sheet;
• a conveyance unit configured to execute a conveyance operation of conveying the sheet in a sheet conveyance direction toward the transfer unit;
• a detection unit disposed between the conveyance unit and the transfer unit in the sheet conveyance direction, and configured to detect the sheet;
• a motor configured to drive the rotary by rotating in a first direction, and drive the conveyance unit by rotating in a second direction opposite to the first direction;
• and
• a control unit configured to control the motor,
• wherein the control unit controls the motor in the image forming operation such that the sheet is detected by the detection unit after the rotary is moved to a predetermined development posture, the predetermined development posture being a development posture to which the rotary moves last during the execution of the image forming operation, among the plurality of development postures.