G - Physics – 11 – B
Patent
G - Physics
11
B
G11B 11/10 (2006.01) G11B 11/105 (2006.01)
Patent
CA 2058173
The present invention is intended to improve the track recording density and track density of a magnetooptic recording medium to prevent the deterioration of characteristics due to the variation of reproducing power. After recording information signals on a magnetooptic recording medium having at least a reproducing layer, an intermediate layer and a record hold layer, the direction of magnetization of the reproducing layer is turned in the direction of an initializing magnetic field. The reproducing layer is irradiated with a laser beam and a reproducing magnetic field is applied to the same simultaneously to heat the reproducing layer in a temperature distribution so that a region remaining in an initialized state, a region to which information signals are transferred and a region magnetized in the direction of the reproducing magnetic field are formed. Magnetic signals are read from the region of the reproducing layer to which information signals have been transferred.
Aratani Katsuhisa
Ohta Masumi
Gowling Lafleur Henderson Llp
Sony Corporation
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