A head performs recording or reading information with respect to a sheet-shaped recording medium. A pair of rollers sandwich therebetween and transport the recording medium in a transport path of the recording medium passing through the head. A cantilevered frame extends while being cantilevered in a direction traversing the transport path. One end of an opening and closing unit is rotatably supported by the cantilevered frame. The opening and closing unit is revolvable around the one end to move between a closed position where the opening and closing unit covers at least a transport portion by the pair of rollers in the transport path and an open position where the transport position is exposed to the outside.