Dynamic magnetic information storage or retrieval – Record medium – In container
Patent
1997-04-16
1998-12-15
Renner, Craig A.
Dynamic magnetic information storage or retrieval
Record medium
In container
G11B 23033
Patent
active
058503277
ABSTRACT:
A magnetic disc cartridge includes a casing formed by upper and lower shells bonded together. A magnetic disc is supported for rotation in the casing and includes a recording area and a non-recording area around the recording area. A pair of liners are fixed respectively to the inner surfaces of the upper and lower shells to be opposed to the upper and lower surfaces of the disc. Each of the upper and lower shells is provided with at least one protrusion projecting toward the disk from a portion of the inner surface which is outside the portion of the shell opposed to the recording area of the magnetic disc and is opposed to at least a part of the non-recording area of the magnetic disc, whereby the liners on the respective shells are shifted toward the disk from the inner surfaces of the shells by the protrusions.
REFERENCES:
patent: 4626949 (1986-12-01), Brock et al.
patent: 4814926 (1989-03-01), Gulbrandsen
patent: 4839766 (1989-06-01), Kato
patent: 4843511 (1989-06-01), Downey
patent: 4958249 (1990-09-01), Kadokura et al.
patent: 5537281 (1996-07-01), Ma et al.
Fuji Photo Film Co. , Ltd.
Renner Craig A.
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