An image forming apparatus includes a recoding-medium stacking portion, a recording-medium ejecting portion and a auctioning/exhausting unit. The recording-medium ejecting portion ejects a recording medium on which an image is formed, to the recording-medium stacking portion. The suctioning/exhausting unit suctions air in a vicinity of the recording-medium ejecting portion. The suctioning/exhausting unit exhausts the suctioned air though a filter to an outside of a main body of the image forming apparatus.