A printer, comprising: a printing part (20, 21) configured to perform printing on recording paper; a cutter configured to cut the recording paper; a first roller provided on a side to which the recording paper is discharged from the cutter; a second roller that is in contact with the first roller and is rotated by a rotation of the first roller; a third roller that is in contact with the first roller and is rotated by the rotation of the first roller; and a connecting arm configured to connect a center of the first roller and a center of the second roller, wherein, when the first roller is rotating in a first rotation direction, the second roller is configured to move on an outer periphery of the first roller toward a first position away from the third roller, and when the first roller is rotating in a second rotation direction opposite to the first rotation direction, the second roller is configured to move on the outer periphery of the first roller toward a second position close to the third roller, wherein the recording paper is held between the first roller and the second roller at the first position and discharged from a first discharge opening when the recording paper is discharged between the first roller and the second roller, and characterized in that the second roller is configured to move to the second position in accordance with the rotation of the first roller with the recording paper held between the first roller and the second roller, and the recording paper held between the first roller and the second roller is guided to enter between the first roller and the third roller in accordance with the movement of the second roller, so that recording paper held between the first roller and the third roller is discharged from a second discharge opening, when the recording paper is discharged between the first roller and the third roller. a printing part (20, 21) configured to perform printing on recording paper; a cutter configured to cut the recording paper; a first roller provided on a side to which the recording paper is discharged from the cutter; a second roller that is in contact with the first roller and is rotated by a rotation of the first roller; a third roller that is in contact with the first roller and is rotated by the rotation of the first roller; and a connecting arm configured to connect a center of the first roller and a center of the second roller, wherein, when the first roller is rotating in a first rotation direction, the second roller is configured to move on an outer periphery of the first roller toward a first position away from the third roller, and when the first roller is rotating in a second rotation direction opposite to the first rotation direction, the second roller is configured to move on the outer periphery of the first roller toward a second position close to the third roller, wherein the recording paper is held between the first roller and the second roller at the first position and discharged from a first discharge opening when the recording paper is discharged between the first roller and the second roller, and characterized in that the second roller is configured to move to the second position in accordance with the rotation of the first roller with the recording paper held between the first roller and the second roller, and the recording paper held between the first roller and the second roller is guided to enter between the first roller and the third roller in accordance with the movement of the second roller, so that recording paper held between the first roller and the third roller is discharged from a second discharge opening, when the recording paper is discharged between the first roller and the third roller.