Magnetooptical recording medium

Details Magnetooptical recording medium Magnetooptical recording medium

1993-03-10

1996-09-03

Kiliman, Leszek

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

428634DF, 428634SC, 428634NF, 428634XS, 428900, 369 13, 369288, G11B 566

Patent

active

055522378

ABSTRACT:
In a magnetooptical recording medium comprising a first dielectric layer, a recording layer, a second dielectric layer, a metal reflective layer, and a protective coat on a substrate, magnetooptical recording is carried out in a magnetic field modulation mode using recording light. The first dielectric layer is thinner than the thickness corresponding to the primary minimum reflectivity in the reflectivity versus thickness curve of dielectric layer measured at the light wavelength. This provides an increased recording sensitivity and an increased recording power margin over which recording/reproducing operation can be carried out at low error rates and high resolution.

REFERENCES:
patent: 4466035 (1984-08-01), Connell
patent: 4610912 (1986-09-01), Takahashi et al.
patent: 4680742 (1987-07-01), Yamada
patent: 4717628 (1988-01-01), Takahashi et al.
patent: 4786559 (1988-11-01), Murakami et al.
patent: 5058099 (1991-10-01), Murakami
patent: 5143797 (1992-09-01), Hashima et al.

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