Reproducing method for magneto-optic recording medium, and magneto-optic disk device
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United States of America Patent
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May 14, 2002
Grant Date -
N/A
app pub date -
Sep 22, 1999
filing date -
Jan 23, 1998
priority date (Note) -
Expired
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Abstract
A reproducing apparatus reproduces a signal recorded in a magneto-optical disk. The magneto-optical disk includes a layered structure having a recording layer, an intermediate layer and a reproducing layer. Laser light is illuminated from an optical head to the magneto-optical disk in such an intensity that no magnetic domain is transferred from the recording layer to the reproducing layer only by the laser light. In this state, alternating magnetic field is applied through a magnetic head to the magneto-optical disk, thereby concurrently causing transfer and expansion of a magnetic domain to the reproducing layer. As a result, transfer of the magnetic domain is effected with expansion.
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