| 摘要 |
The present invention is directed to a hub for use in a tape casette for winding a recording tape around the periphery of the cylindrical surface. The hub includes a drive shaft inserting hole at the center portion thereof; a notch for fastening the end of the recording tape in association with a tape securing member on the peripheral cylindrical surface; a first and a second surface opposed to each other, each surface having an inner annular surface and an outer annular surface; and a resin injection gate surrounded by a concave recess located in the outer annular surface of the first surface. In addition, the present invention includes a recess formed on the outer annular surface of the second surface at a position opposite to the resin injection gate, the bottom face of the recess being substantially parallel to the outer annular surface of the second surface.
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