Provided is an image formation device in which a repulsive force acting to close a shutter attached to a recovered-toner transport part makes it difficult for a recovered-toner recovery container to be pushed out from the image formation device. During a process in which a recovered-toner box (30) is connected to a transport pipe (51), a spiral rib (52b) guides a contact rib (37e) so as to force a sealing shutter (52) to move in a direction in which a reception/dispensation port (51a) opens against the biasing of a helical-coil torsion spring (53). A low-repulsive-force region (52c) guides the contact rib (37e) after the spiral rib (52b) during the step for connecting the recovered-toner box (30) to the transport pipe (51). The angle of tilt of the low-repulsive-force region (52c) in the direction in which the recovered-toner box (30) is connected is smaller than the angle of tilt of the spiral rib (52b) in the direction in which the recovered-toner box (30) is connected.