Flexible magnetic disk sheet

Details Flexible magnetic disk sheet Flexible magnetic disk sheet

1984-12-18

1987-04-21

Wolff, John H.

Dynamic magnetic information storage or retrieval

Record medium

In container

360 99, 360135, G11B 2302, G11B 5016

Patent

active

046601198

ABSTRACT:
A flexible magnetic disk sheet having a central circular hole is described, through which an apparatus for reading and writing is engaged, and enclosed in an jacket having a larger central circular hole exposing the hole of the disk sheet within the hole of the jacket, wherein a reinforcing plastic ring containing a solid lubricating agent is provided on the region of the flexible magnetic disk sheet immediately surrounding the central circular hole thereof.

REFERENCES:
patent: 4370689 (1983-01-01), Davies
patent: 4480282 (1984-10-01), Brock et al.
patent: 4499516 (1985-02-01), Purdy et al.
patent: 4523246 (1985-06-01), Okuzawa
patent: 4581270 (1986-08-01), Kato et al.

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