Optical disk cartridge having disk thickness sample plate

Details Optical disk cartridge having disk thickness sample plate Optical disk cartridge having disk thickness sample plate

1995-06-06

1997-01-21

Levy, Stuart

Dynamic information storage or retrieval

Storage medium structure

Adjuncts or adapters

360133, G11B 2303, G11B 708

Patent

active

055965660

ABSTRACT:
An optical disk cartridge and an optical disk apparatus wherein, whether or not an optical disk has a different thickness, the distances of a pair of optical heads to a pair of recording faces of the optical disk can be set readily with a high degree of accuracy. The optical disk cartridge comprises a cartridge including a pair of halves between which an optical disk is accommodated for rotation, and a sample plate having a thickness corresponding to the thickness of the optical disk and disposed in parallel to the optical disk at a position in the cartridge in which the sample plate does not interfere with the optical disk. A pair of restricting elements are provided in the optical disk apparatus and contacts, when the optical disk cartridge is loaded, with the opposite surfaces of the sample plate to mechanically restrict the distances of the optical heads from the recording faces of the optical disk.

REFERENCES:
patent: 4908817 (1990-03-01), Sandell et al.
patent: 5034844 (1991-07-01), Shiba et al.
patent: 5077726 (1991-12-01), Dodds et al.
patent: 5163038 (1992-11-01), Arai
patent: 5182742 (1993-01-01), Ohmori et al.
patent: 5208802 (1993-05-01), Suzuki et al.

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