Support magnetic disk substrate and magnetic disk unit using the

Details Support magnetic disk substrate and magnetic disk unit using the Support magnetic disk substrate and magnetic disk unit using the

1996-02-29

1999-10-19

Miller, Brian E.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

G11B 17038

Patent

active

059699027

ABSTRACT:
A magnetic disk substrate support member of glass or ceramic for supporting at least one magnetic disk substrate. The support member defines a contact surface which is flat to within 3 .mu.m or less. The support member and the magnetic disk substrate mutually define a contact area in which the support member and the magnetic disk substrate define a ratio of between 50% and 95%. The support member may be a spacer or a shim. The magnetic disk substrate may be arranged on a substantially cylindrical hub and fixed to a rotary shaft via the spacer or shim and supported by a clamp.

REFERENCES:
patent: 5319512 (1994-06-01), Grapenthin
patent: 5436775 (1995-07-01), Ishimatsu
patent: 5550687 (1996-08-01), Suzuki

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