REPRODUCING METHOD FOR MAGNETO-OPTIC RECORDING MEDIUM, AND MAGNETO-OPTIC DISK DEVICE

摘要

A reproducing device reproduces a signal recorded on a magneto-optic disk, which has a multilayer structure including a recording layer, an intermediate layer, and a reproducing layer. A laser beam whose intensity is low enough not to cause, by itself, transfer of magnetic domains from the recording layer to the reproducing layer is applied from an optical head to the magneto-optic disk, and in this state an alternating magnetic field from a magnetic head is applied to the magneto-optic disk. Consequently, transfer of magnetic domains to the recording layer and expansion thereof progress simultaneously, and resultantly magnetic domains are expansion-transferred.