Clamping device for optical disk assemblies

Details Clamping device for optical disk assemblies Clamping device for optical disk assemblies

1983-01-17

1985-11-12

Stephan, Steven L.

Dynamic information storage or retrieval

Storage medium structure

Flexible

3461351, 346137, 360 99, 360135, 369271, 369284, 369286, G01D 1532, G11B 724

Patent

active

045532320

ABSTRACT:
A device is disclosed for clamping disk assemblies in a manner to impart constant tension to a support web and cover sheet, while assuring easy and quick loading and unloading of the assembly. The optical disk assembly includes a web assembly including a flexible disk-shaped support web and preferably an opposed cover sheet. An annular retaining ring engages the web assembly around its periphery. The support web carries a record layer with an information storage region. The optical disk assembly is mounted on a reference structure. The web assembly is drawn over an annular locating surface integral with the reference structure to subject the web assembly to circumferentially-symmetric tension. The tension may be constant or, in some embodiments of the invention, may be changeable from a low "storage" tension to a higher "operating" tension. Clamping elements are movable radially over the optical disk assembly from a retracted position.

REFERENCES:
patent: 3373413 (1968-03-01), Treseder
patent: 3608909 (1971-09-01), Rabinow
patent: 3805292 (1974-04-01), Hashiguchi et al.
patent: 4022478 (1977-05-01), Stewart
patent: 4365258 (1982-12-01), Geyer et al.
patent: 4464670 (1984-08-01), Leonard et al.

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