Image forming apparatus, image forming method and paper transferring apparatus

An image forming apparatus includes a transferring device equipped with an endless rotating member for transferring a recording sheet while holding the recording sheet on a surface of the rotating member by rotating the rotating member. This transferring device has a first position, a second position and a third position in this order along a rotation path of the rotating member. Furthermore, the image forming apparatus includes an image forming portion for forming an image on the recording sheet being transferred from the first position to the second position by the transferring device, the image forming portion being provided between the first position and the second position so as to face the transferring device, and an inverting portion for receiving the recording sheet having an image formed by the image forming portion and transferred to the second position by the transferring device, inverting the recording sheet, and feeding the inverted recording sheet to the transferring device at the third position.