Dynamic magnetic information storage or retrieval – Record medium – In container
Patent
1992-11-04
1995-04-25
Tupper, Robert S.
Dynamic magnetic information storage or retrieval
Record medium
In container
G11B 2303
Patent
active
054104408
ABSTRACT:
A disc cartridge including a recording disc, a cartridge case in which the recording disc is housed rotatably and a head inserting opening is formed at a predetermined location, and a synthetic resin-made shutter adapted to open and close the head inserting opening in the cartridge case, wherein the cartridge case and the shutter contain an ester compound of glycerin and optionally an amine type organic compound.
REFERENCES:
patent: 4901180 (1990-02-01), Oishi
patent: 5084862 (1992-01-01), Fujita et al.
patent: 5121380 (1992-06-01), Fujita et al.
Hitachi Maxell Ltd.
Tupper Robert S.
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