Abstract: A paper reversing device comprises a paper inlet roller for moving a printing paper toward a guide plate in association with a reversing roller, and a cylindrical fur brush disposed above the guide plate for forcing the printing paper which has passed between the paper inlet roller and the reversing roller toward a paper outlet roller cooperating with the reversing roller, at least one of the paper inlet roller and the reversing roller having a collar at each end thereof for imparting rigidity to the printing paper during the period of time when the printing paper is passing between the paper inlet roller and the reversing roller.