Over write capable magnetooptical recording medium, recording me

Details Over write capable magnetooptical recording medium, recording me Over write capable magnetooptical recording medium, recording me

1994-06-30

1997-10-14

Dinh, Tan

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

360 59, G11B 1100

Patent

active

RE0356301

ABSTRACT:
A multi-layered magnetooptical recording medium that satisfies predetermined formulas is over write capable when used, in a recording method and apparatus, with a jointing field, i.e., a magnetic field the intensity of which decreases continuously from an initial field to a bias field having the same direction as the initial field, permitting greater freedom in the choice of media compositions. In a two-layer structure including magnetically coupled recording and reference layers, recorded data may advantageously be reproduced from the reference layer.

REFERENCES:
patent: 4660190 (1987-04-01), Fujii et al.
patent: 4672594 (1987-06-01), Kato et al.
patent: 4855975 (1989-08-01), Akasaka et al.

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