Patent ID: 7533840

Claim:
A reel comprising: an upper flange that retains a width direction edge portion of a recording tape; a lower flange that, together with the upper flange, retains a width direction edge portion of the recording tape; a lower circular cylinder portion disposed extending upward from an upper surface of the lower flange on the same circumference as the axial center of the lower flange; a hub that is fitted over the outside of the lower circular cylinder portion and around which the recording tape is wound; a rotational detent member that regulates movement of the hub in the circumferential direction with respect to the lower flange; an upper circular cylinder portion that extends downward from an undersurface of the upper flange and is welded to an end surface of the lower circular cylinder portion such that the hub is interposed and held between the upper flange and the lower flange; and a reel gear, which extends from a lower surface of the lower flange.