An image forming apparatus includes a first guide portion disposed to be movable for opening a transportation path of a medium; a second guide portion disposed to be movable for opening the transportation path and arranged adjacent to the first guide portion; a first transportation member for transporting the medium to the transportation path; and a second transportation member for discharging the medium from the transportation path to outside the image forming apparatus. Further, when the first guide portion and the second guide portion close the transportation path, the second guide portion is arranged to guide a rear edge of the medium.