Recording and/or reproducing device comprising an automatic shutter

摘要

A take-up reel includes a reel hub having an outer circumferential surface which is used as a magnetic tape winding surface. The reel hub has an opening for passing a pull-out assembly through an interior thereof. The take-up reel has a receiving portion for receiving the pull-out assembly in the interior of the reel hub. The take-up reel includes a shutter having an open/close door for automatically opening/closing the opening in cooperation with the pull-out assembly. When the open/close door close the opening, the open/close door has an outer circumferential surface which forms a part of the magnetic tape winding surface.