Cartridge used for a disc-shaped recording medium

Details Cartridge used for a disc-shaped recording medium Cartridge used for a disc-shaped recording medium

1994-10-11

1996-12-24

Levy, Stuart S.

Dynamic information storage or retrieval

Storage medium structure

Adjuncts or adapters

360133, G11B 1703, G11B 2300

Patent

active

055879942

ABSTRACT:
A cartridge provided with a case for housing an optical disk so that it can be driven and rotated. A recessed section is formed around the peripheral edge of the center hole of the optical disk. A hub, which is used for clamping the optical disk by the use of a magnetic force, is formed into a hat-shape, and it is placed at the recessed section. The height of the hub is set to be greater than the gap between the optical disk and the cartridge case. Without the necessity of fixing the hub to the disk, this arrangement makes it possible to prevent the hub from coming off from the recessed section. Thus, the arrangement eliminates the fixing process between the hub and the optical disk as well as maintaining the clamping function of the hub, thereby making it possible to reduce the manufacturing cost.

REFERENCES:
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Henderson, "Flexible Disk Cartridge Arrangement," IBM TDB, vol. 24, No. 1A, Jun. 1981, p. 216.

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