2-7 位相差ROMディスクを基板とした光磁気記録の検討 [in Japanese] Magneto Optical Recording by Using Disk with Substrate of Phase Differential ROM [in Japanese]
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Hybrid disk system using magneto optical disk with ROM substrate was studied by developing two-laser optical head of different wave length (λ=670,780nm). Good eye pattern was obtained by recording and reproducing between phase-pit tracks.