An insertion and removal mechanism for recording media includes a door that can move between a closed position that covers a loading chamber by moving in a direction perpendicular to a direction in which the recording medium is inserted and removed. In the open position, an opening is created, through which the recording medium can be inserted and removed, by the door separating from the loading chamber. A conversion mechanism converts the operating force of the door, acting in the direction of opening and closing of the door, into a force in the direction of inserting and removing the recording medium. A first driving unit is driven in the direction of insertion and removal of the recording medium through force converted by the conversion mechanism and engages with the recording medium when the door is closing so as to cause the recording medium to be moved toward the terminals of the information device. A second driving unit is driven in the direction of insertion and removal of the recording medium through force converted by the conversion mechanism engages with the recording medium when the door unit is opening so as to cause the recording medium to move toward the side of the loading chamber opposite the terminals.