High speed tape transport system.

摘要

In a tape drive system, a cassette (10) comprises a pair of spaced apart flangeless hubs (34) and an access opening between the hubs. Each hub is provided with a cap (56) of magnetically attractive material. Each hub receives a rotatable spindle which has a magnetic portion (76) at its upper end. There are abutting surfaces on each hub and spindle which act as registration surfaces to provide a contiguous but non engaging relationship between the spindle magnetic portion and the hub cap of magnetically attractive material. The magnetic attraction between the magnetic portion of each spindle and its respective hub is the sole force urging each hub into engagement with its respective spindle. The abutting registration surfaces are located on each spindle relative to the bottom wall of the cassette so as to suspend its respective hub between the housing top and bottom walls (12,14). On each side of the access opening, there is mounted a cylindrical guide member (38) which has a stationary flange at each end and a stationary central grooved portion (98) between the flanges. The tape extends in a tape transport path from one hub directly to and engaging the grooved central portion of one guide member and across the access opening directly to and engaging the grooved central portion of the other guide member and directly to the other hub. The guide members are the sole members in the cassette engaged by the tape in the tape transport path between said hubs.