Hard disc spacer and hard disc clamp

Details Hard disc spacer and hard disc clamp Hard disc spacer and hard disc clamp

1996-09-30

1998-03-03

Wolff, John H.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

360 9808, 360 9912, G11B 1702

Patent

active

057242089

ABSTRACT:
An object of the present invention is to provide a hard disc which prevents alien bodies and rust from falling onto hard discs and securely holds the hard discs in parallel alignment. In a first basic structure of the hard disc spacer, the hard disc spacer is made of a metal and coated with a hard metal coating layer.
In a second basic structure thereof, the hard disc spacer is made of a metal and coated with a ceramic coating layer. In a third basic structure thereof, the hard disc spacer is made of glass. In a first basic structure of the hard disc clamp, the hard disc clamp is made of a metal and coated with a hard metal coating layer. And in a second basic structure thereof, the hard disc clamp is made of a metal and coated with a ceramic coating layer.

REFERENCES:
patent: 4945432 (1990-07-01), Matsudaira et al.
patent: 5331488 (1994-07-01), McAllister et al.
patent: 5367418 (1994-11-01), Chessman et al.
patent: 5436775 (1995-07-01), Ishimatsu
patent: 5550687 (1996-08-01), Suzuki

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