| 摘要 |
A reel has: a hub which is shaped as a cylindrical tube having a bottom, and around which a recording tape is wound; a flange provided at an end portion of the hub, and holding a widthwise direction end portion of the recording tape; a reel plate attracted by magnetic force to a rotating shaft of a drive device; and a pin for caulking which projects from a bottom surface of a floor wall of the hub, for attachment of the reel plate. A positioning portion, which positions the pin for caulking, is provided at a top surface of the floor wall of the hub.
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