A central paper discharge roller is disposed on a shaft so as to come in contact with the center of the paper to be discharged. An outer paper discharge roller is disposed on either side of the central paper discharge roller at a predetermined interval. The diameter of the central paper discharge roller is greater than that of the outer paper discharge rollers. A plurality of ribs which press the paper against the paper discharge rollers are disposed on a rib panel. With this structure, the paper discharge device can discharge the paper without generating crinkles in the paper.