| 摘要 |
A magneto-optical memory device includes a first unit projecting a light beam onto a desired position on a recording medium, and a second unit applying a magnetic field to a position onto which the light beam is projected. The second unit applies, to the recording medium, a predetermined magnetic field within a magnetic field intensity range wherein a rate of change of a reproduced signal amplitude at the time of reproduction with respect to a magnetic field intensity becomes large. The relative positions of the second unit and the first unit are adjusted in accordance with a reproduced signal amplitude thus obtained.
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