Recording and/or reproducing apparatus for using magneto-optical

Details Recording and/or reproducing apparatus for using magneto-optical Recording and/or reproducing apparatus for using magneto-optical

1992-12-09

1993-09-21

Nguyen, Hoa T.

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

369 752, 369270, 360114, G11B 1304, G11B 1112, G11B 1110

Patent

active

052474968

ABSTRACT:
A magneto-optical disc recording and/or reproducing apparatus having an external magnetic field generating means for supplying an external magnetic field to a magneto-optical disc, a spacer sheet disposed relative to the magneto-optical disc at its surface side opposing to the external magnetic field generating means and a moving means for moving the external magnetic field generating means in the direction in which the external magnetic field generating means is isolated from and brought in contact with the magneto-optical disc, in which the moving means moves the external magnetic field generating means to the position at which the external magnetic field generating means comes in contact with the magneto-optical disc via the spacer sheet when an information signal is recorded on the magneto-optical disc, whereas the moving means moves the external magnetic field generating means to the position distant from the magneto-optical disc when the information signal recorded on the magneto-optical disc is reproduced.

REFERENCES:
patent: 5022018 (1991-06-01), Vogelgesang
patent: 5027334 (1991-06-01), Yamanaka et al.
patent: 5034933 (1991-07-01), Fujisawa et al.
Patent Abstracts of Japan, vol. 13, No. 409 (P-931)(3757), 11 Sep. 1989 & JP-A-1 150 203 (Victor Company of Japan).
Patent Abstracts of Japan, vol. 10, No. 180 (0-471)(2236), 24 Jun. 1986 & JP-A-61 029 438 (Sony).

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