Dynamic magnetic information storage or retrieval – Record medium – In container
Patent
1983-08-29
1987-02-17
Heinz, A. J.
Dynamic magnetic information storage or retrieval
Record medium
In container
206444, G11B 2303, B65D 8530
Patent
active
046444343
ABSTRACT:
A magnetic disk cartridge comprising a magnetic disk for conducting image recording and reproducing through high-speed rotation and a case having a magnetic head receiving hole near a diagonal line of the case is provided with a shutter member having a rotation center at the corner of the case nearest to the magnetic head receiving hole. The shutter member is rotated fanwise to open and close the magnetic head receiving hole. The magnetic head receiving hole is opened when a portion of the shutter member engages an exterior shutter opening contact member of a recording device upon insertion of the magnetic disk cartridge. The magnetic head receiving hole is closed upon removal of the disk cartridge from the recording device.
REFERENCES:
patent: 4120012 (1978-10-01), Bowers
patent: 4185314 (1980-01-01), Hatchett et al.
patent: 4443874 (1984-04-01), Steenberg
patent: 4482929 (1984-11-01), Beck et al.
patent: 4488190 (1984-12-01), Oishi et al.
patent: 4503474 (1985-05-01), Nigam
patent: 4517617 (1985-05-01), Tsuji et al.
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Carey et al., IBM Technical Disclosure Bulletin, vol. 27, No. 1A, pp. 40-41, Jun. 1984.
Oishi Kengo
Ono Tuyoshi
Fuji Photo Film Co. , Ltd.
Heinz A. J.
Koval Melissa J.
Razzano Pasquale A.
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