BELT DRIVE DEVICE AND IMAGE FORMING APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a belt drive device and an image forming apparatus that can improve the accuracy of the correction of the deviation and/or skew of an endless belt laid over a plurality of rollers.SOLUTION: In a belt drive device and an image forming apparatus, two steering rollers are moved while inclined in the same phase on the basis of skew amount information to correct the skew of a belt without changing a deviation position, and the two steering rollers are moved while inclined in the reverse phase on the basis of positional information to correct the skew of the belt without changing the skew amount.