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

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.

REFERENCES:
patent: 4685017 (1987-08-01), Swinburne
patent: 4688206 (1987-08-01), Nakagawa et al.
patent: 4698714 (1987-10-01), Sugawara et al.
patent: 4710831 (1987-12-01), Nishimura
patent: 4837758 (1989-06-01), Motoyama et al.
patent: 4849844 (1989-07-01), Kato
patent: 4858050 (1989-08-01), Ashe et al.

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