Dynamic information storage or retrieval – Storage medium structure – Adjuncts or adapters
Patent
1997-04-03
1999-07-20
Levy, Stuart S.
Dynamic information storage or retrieval
Storage medium structure
Adjuncts or adapters
360133, G11B 370, G11B 2303
Patent
active
059264543
ABSTRACT:
A disc cartridge for freely rotatably accommodating a disc-shaped recording medium has a slide shutter assembly for selectively opening and closing the access window through which a recording and/or reproducing head is accessible to the optical disc accommodated within the cartridge. The slide shutter assembly is of a generally U-shaped configuration including top and bottom shutter plates and a bridge plate connecting the top and bottom shutter plates. While the slide shutter assembly is slidably mounted on a front open portion of the cartridge casing, the bridge plate has an inner surface formed integrally with a plurality of catch pieces. At least one guide plate extends along the front open portion of the cartridge casing between side walls and has a slot defined therein so as to extend lengthwise of the guide plate. With the slide shutter assembly mounted on the front portion of the cartridge casing, the catch pieces are slidably engaged in said slot to avoid an accidental separation of the slide shutter assembly from the cartridge casing.
REFERENCES:
patent: 4918559 (1990-04-01), Maruyama et al.
patent: 5570341 (1996-10-01), Sandell et al.
Mizutani Hikaru
Ohta Kenji
Fields Kenneth W.
Hitachi Maxell Ltd.
Levy Stuart S.
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