It is an object of the present invention to use a simple configuration to reduce the deviate of an image printed position caused by the behavior of a print sheet when the back end of the sheet slips out from an upstream roller pair. Thus, the present invention provides a printing apparatus including transporting section for transporting a print medium relative to printing heads for printing an image on a print sheet, the apparatus comprising vibrating section for vibrating the transporting section. This vibrating section vibrates the transporting section before the printing heads start a printing operation. Thus, even if the transporting section is stopped at an unstable position when a transporting operation is stopped, the applied vibration brings the transporting section into a stable state sufficiently before a printing operation is started.