To solve a problem that recording paper bends and is accumulated so as to be bent in a storage part if the recording paper is soft in the case of a stacker adapted to accumulate the recording paper delivered from an image forming apparatus so that the recording paper hangs down on a support.

The image forming apparatus includes first paper guides separated by a predetermined space in a separating direction from the image forming apparatus perpendicularly to a vertical direction from a delivery port of the image forming apparatus and guiding the recording paper delivered from the delivery port obliquely downward from the delivery port; second paper guides arranged obliquely downward from the first paper guides to guide further downward the recording paper that has passed through the first paper guides; a receiving part on which the tip of the recording paper abuts; and a sheet supported below the first paper guides so that its upper part is turnable to press the recording paper, thus guiding the delivered recording paper into a desired position.