Dynamic information storage or retrieval – Storage medium structure – Adjuncts or adapters
Patent
1988-07-27
1994-03-22
Levy, Stuart S.
Dynamic information storage or retrieval
Storage medium structure
Adjuncts or adapters
360133, G11B 2303
Patent
active
052971333
ABSTRACT:
An optical disc cartridge provided with a mechanism for preventing incorrect insertion of a cartridge. A cut-off portion is provided at a head and side portion at an inserting side of, for example, a 3.5" erasable optical disc cartridge. The cut-off portion is located at an side opposite to a corresponding cut-off portion used in a 3.5" (86 mm) floppy disc cartridge. A stopper is provided in a cartridge insertion portion of the reproducing apparatus to prevent incorrect insertion of the cartridge and is located to correspond to the location of the cartridge cut-off portion. A depression or the like is provided at a front end of the cartridge at a portion symmetrical about an axis to an edge of a shutter of the cartridge where a shutter opening lever normally strikes when the cartridge is inserted into the cartridge insertion portion.
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Katase Nobuhiro
Otsuka Yasuo
Sasaki Tohru
Hitachi , Ltd.
Levy Stuart S.
Watkins Kevin M.
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