US Patent 9383686 Developer supply container and image forming apparatus

A developer supplying container includes a rotatable developer discharging portion, a drive transmitting portion, a suppressing portion movable between an operating position and a non-operating position; and a recessed portion, provided on an outer peripheral surface of the developer supply container, for reducing a sliding load between an outer peripheral surface of the developer supply container and a wiping member of a developer receiving apparatus when the developer supply container is rotated in a circumferential direction.