Belt driving control apparatus and image forming apparatus

摘要

A belt driving control apparatus (6), the belt driving control apparatus having an endless belt (60), a driving roller (63) driving the endless belt, a driving motor (32) driving the driving roller, at least one idler roller (66) being dependent on the endless belt, and an encoder (31) attached to one of the idler roller, the belt driving control apparatus (6) includes a structure where a control target value of the driving motor is set so that an effective speed of the endless belt is constant and the driving motor is drive-controlled so that the control target value is satisfied.
Speed variation generated by the change of the thickness of the endless belt is stabilized.