To prevent the occurrence of a failure caused by a speed difference between a plurality of roller pairs driven by two or more kinds of drive motors.

There is provided a post-processing device for stopping the drive of the roller pairs 31, 32, 36 and 37 before punching processing is performed by a punching processing part 251 and starting the drive of the roller pairs 31, 32, 36 and 37 after the punching processing is performed. In the post-processing device, stepping motors 26a and 26b for driving the roller pairs 31, 32 and 36 and a brushless motor 27a for driving the roller pair 37 are different in acceleration when starting the drive and deceleration when stopping the drive. In an acceleration period accompanying the drive start and a deceleration period accompanying the drive stop of the plurality of roller pairs 31, 32, 36 and 37 by the stepping motors 26a and 26b and the brushless motor 27a, an interval between rollers of the roller pair 37 driven by the brushless motor 27a is brought into such a state that a paper sheet cannot be held.