IMAGE FORMING APPARATUS THAT DETECTS VARIATION IN ROTATION PERIOD OF ROTATING MEMBER AND PERFORMS MISREGISTRATION CORRECTION

摘要

An image forming apparatus includes a rotating member; a forming unit for each of a plurality of colors used in image formation, configured to form a developer image of the corresponding color on the rotating member or on a recording medium on the rotating member; a driving unit configured to rotate the rotating member; a period detection unit configured to detect a rotation period of the rotating member; and a control unit configured to, according to a detection result detected by the period detection unit, obtain a variation in the rotation period of the rotating member due to a change in the driving unit, and perform correction control for misregistration in the developer image formed on the rotating member or on the recording medium on the rotating member by the forming unit.