Optical disc cartridge and mechanism for preventing an incorrect

Details Optical disc cartridge and mechanism for preventing an incorrect Optical disc cartridge and mechanism for preventing an incorrect

1993-12-27

1997-02-25

Levy, Stuart S.

Dynamic information storage or retrieval

Storage medium structure

Adjuncts or adapters

360133, G11B 2303

Patent

active

056065477

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 and at a portion symmetrical about an axis to an edge of the shutter where the shutter opening lever normally strikes.

REFERENCES:
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patent: 4685017 (1987-08-01), Swinburne
patent: 4688206 (1987-08-01), Nakagawa et al.
patent: 4698714 (1987-10-01), Sugawata et al.
patent: 4710831 (1987-12-01), Nishimura
patent: 4837758 (1989-06-01), Motoyama et al.
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patent: 4858050 (1989-08-01), Ashe et al.
patent: 5081557 (1992-01-01), Takeuchi et al.
patent: 5297133 (1994-03-01), Otsuka et al.
Fifth Draft of an American National Standard (Aug. 1984).
American National Standard (ANSI X3.137-1988).
JIS 90mm Flexible Disk Cartridge (Jan. 1987).

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