Patent ID: 8485463

Claim:
A reel comprising: a tubular hub, at an inner periphery face of which a projection portion that projects in a radial direction is formed, and around an outer periphery face of which a recording tape is wound; a first flange including a first flange portion provided at one end portion side of the hub, and a first extension portion that extends in an axial direction of the hub from the first flange portion and is joined to the projection portion; a second flange including a second flange portion provided at another end portion side of the hub, and a second extension portion that extends in the axial direction of the hub from the second flange portion and is joined to the projection portion; and positioning portions, each extending between the inner periphery face of the tubular hub and one of the upper face or the lower face of the projection portion, the positioning portions being configured to regulate, in the radial direction, positions of distal end portions of the first extension portion and the second extension portion relative to the hub so as to center the first and second flanges relative to the hub, wherein a gap is formed respectively between the inner periphery face of the hub and an outer periphery face of each of the first extension portion and the second extension portion.