G - Physics – 11 – B
Patent
G - Physics
11
B
G11B 11/10 (2006.01) G11B 11/105 (2006.01)
Patent
CA 2060547
A magneto-optical recording medium has a multi-layer magnetic film structure comprising a reproducing layer, an intermediate layer, and a record holding layer. These layers are magnetically coupled to one another. The recording medium is irradiated with a laser beam and appropriate magnetic fields are provided such that in a area of a spot of the laser beam on the recording medium, first, second and third regions are formed as a result of a temperature distribution within the laser beam spot. The first and third regions act as masking regions, with the second region between the first and third regions being a region from which magnetic signals stored in the record hold layer are transferred to the reproducing layer and are read out from the reproducing layer. In the first embodiment, the magnetic domains of the first and third regions are opposite one another in the reproducing layer.
Aratani Katsuhisa
Nakao Isamu
Ohta Masumi
Gowling Lafleur Henderson Llp
Sony Corporation
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