Over write capable magnetooptical recording medium

Details Over write capable magnetooptical recording medium Over write capable magnetooptical recording medium

1988-05-10

1990-03-20

Stephan, Steven L.

Dynamic magnetic information storage or retrieval

Record medium

369 13, 365122, G11B 566

Patent

active

049106228

ABSTRACT:
Over Write Capable Magnetooptical Recording Medium, Recording Method and Apparatus Using the Same. The recording medium in which the direction of an initial field Hini. is the same as that of a bias field Hb (Classes 1, 2, and 8 in Table 1), and which satisfies predetermined formulas can allow an over-write operation if a jointing field Hjoint. is used which continuously changes from the initial field Hini. to the bias field Hb.

REFERENCES:
patent: 4126494 (1978-11-01), Imamura et al.
patent: 4645722 (1987-02-01), Katayama et al.
patent: 4649519 (1987-03-01), Son et al.
patent: 4771347 (1988-09-01), Horimai et al.
patent: 4794560 (1988-12-01), Bell et al.
Tsunashima et al, "Thermo. writing on exchange-coupled amorphous rear-earth iron double-layer films", IEEE Trans. on MAG, vol. MAG-17, No. 6, Nov. 1981.
R. G. Swartz and B. A. Wooley, "The Bell System Technical Journal", 1983, vol. 62, pp. 1923-1936.

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