| 摘要 |
PCT No. PCT/JP90/01396 Sec. 371 Date Jun. 26, 1991 Sec. 102(e) Date Jun. 26, 1991 PCT Filed Oct. 31, 1990 PCT Pub. No. WO91/06951 PCT Pub. Date May 16, 1991.An over-write capable magnetooptical recording medium is pre-processed by subjecting a track separation zone to a pre-processing field which aligns the magnetization of a recording layer in a predetermined direction so as to avoid formation, in the separation zone, of a magnetic wall between the recording layer and a reference layer when the reference layer is subjected to an initial field to align its direction of magnetization.
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