A transfer apparatus compensates for a floating movement of the a transfer belt, and an image forming device includes the transfer apparatus. The image forming device includes an image forming device body having an image forming unit, and a transfer apparatus to transfer an image formed by the image forming unit onto a printing medium. The transfer apparatus includes a transfer belt, a driving unit to rotate the transfer belt, and at least one regulating unit to regulate a floating movement of the transfer belt and the driving unit thus to be in position.