Interlocking disk stack that prevents disk slip in a storage dis

Details Interlocking disk stack that prevents disk slip in a storage dis Interlocking disk stack that prevents disk slip in a storage dis

1996-08-28

1999-02-23

Korzuch, William R.

Dynamic information storage or retrieval

Storage medium structure

Specific disc profile

360 9808, 360 9912, G11B 1702, G11B 584, G11B 726

Patent

active

058751718

ABSTRACT:
An interlocking disk apparatus for preventing disk slip in a disk stack of a magnetic or optical disk drive is provided. A textured region within the inner diameter of the disks in the disk stack is forced in tight contact with a conformable adjacent surface, such as a spacer ring, clamp plate, and/or hub flange. The textures on the disks penetrate into and/or through the conformal coatings on the adjacent surfaces, resulting in mechanical interlock that inhibits in-plane displacements of the disks from shock and generally improving interfacial contact of the surfaces within the disk stack, thus requiring lower clamping pressures to the disk stack and resulting in greater disk flatness and minimizing disk distortion. Electrostatic Discharge within the disk stack is prevented by diffusing conductive materials into the polymer conformal coating to increase its electrical conductivity.

REFERENCES:
patent: 4754351 (1988-06-01), Wright
patent: 4764828 (1988-08-01), Gollibach
patent: 4875118 (1989-10-01), Kaymaram
patent: 4945432 (1990-07-01), Matsudaira et al
patent: 5031062 (1991-07-01), Wood et al.
patent: 5267106 (1993-11-01), Brue et al.
patent: 5596462 (1997-01-01), Smith
IBM Technical Disclosure Bulletin vol. 21, No. 2, "Disk Pack Compliance Clamp", F. A. Besha and T. J. Rajac, pp. 802-803, Jul. 1978.
IBM Technical Disclosure Bulletin vol. 33, No. 5, "Clamping Technique of Glass-Substrate Disk", pp. 49-50, Oct. 1990.

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