An image forming apparatus includes an image bearing member; an intermediary transfer belt rotatable in a predetermined direction, a rubbing rotatable member provided between the secondary transfer portion and a cleaning blade with respect to the predetermined direction and configured to rub the belt; and a controller for controlling the belt such that after start of a both-side-printing mode operation in which the toner images are formed on respective sides of the recording material, the rotation of the belt is stopped at an end or interruption of the both-side-printing mode operation, and the belt is rotated in a direction opposite from the predetermined direction at least until a portion of the belt contacting the cleaning blade at the time of the stop of the rotation of the belt reaches a position opposing the rubbing rotatable member.