Apparatus for recording and reproducing magneto optical disc

Details Apparatus for recording and reproducing magneto optical disc Apparatus for recording and reproducing magneto optical disc

1996-12-30

1997-10-14

Levy, Stuart S.

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

369 772, 369231, 369244, G11B 1304, G11B 2112

Patent

active

056778970

ABSTRACT:
A cartridge of write and read type or a cartridge of read only type is selectively loaded to a recording and reproducing apparatus. The recording and reproducing apparatus is provided with: a magnetic head for applying a magnetic field; a head movement device for moving the magnetic head between a near position and a far position; a switching lever, which is movable between a non-regulating position to allow the magnetic head to move between the near position and the far position, and a regulating position to regulate the position of the magnetic head at the far position; and a slide plate disposed movably on a cartridge holder and having a protruded portion which is opposed to the cartridge stored in the cartridge holder. The protruded portion abuts to the loaded cartridge to move the slide plate, and the switching lever is positioned at the non-regulating position by abutting to the moved slide plate if the loaded cartridge is the write and read type. The protruded portion is engaged with a judgement recess of the cartridge, and the switching lever is positioned at the regulating position if the loaded cartridge is the read only type.

REFERENCES:
patent: 5309421 (1994-05-01), Fujisawa
patent: 5450377 (1995-09-01), Eom

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