| 摘要 |
<p>A signal recording medium capable of being strongly secured to a rotation part such as a disc table even on high-speed rotation. A floppy disc includes a hub (2) at its centre portion and a disc substrate (3) having in its disc-shaped main portion a circular opening operating as a mounting portion for the hub and also having a signal recording surface on the disc-shaped main portion. The hub includes an abutment surface (2a) abutted against the disc table rotated in unison with the floppy disc and a facing suction surface (2b) spaced apart from a suction magnet (102a) mounted on a rim portion of the disc table when the abutment surfaces is abutted against a hub setting surface of the disc table. <IMAGE></p> |
