| 摘要 |
In a disk cartridge having a housing containing a rotatable data storage disk and hub assembly, the hub having a centered circular plate portion accessible through a housing aperture, a disk cover collar having a flexible removable bottom cover supported by the housing to cover the housing aperture and having an annular ring portion which provides a confinement ring for centering the hub and data storage disk as the disk cover collar flexes during normal handling of disk cartridge.
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