Magneto-optical recording medium, manufacturing method...

Details Magneto-optical recording medium, manufacturing method... Magneto-optical recording medium, manufacturing method...

2006-06-26

2008-05-06

Bashore, Alain L. (Department: 1762)

Coating processes

Magnetic base or coating

Magnetic coating

C427S127000, C427S128000, C428S818000, C428S822200, C369S013380

Reexamination Certificate

active

07368146

ABSTRACT:
A magneto-optical recording medium has a recording layer and a reflective layer on a substrate. The recording layer has a layered structure in which at least one spinel ferrite (or rutile-type oxide or hematite) layer and at least one garnet ferrite layer are piled together. It is preferable that the layered structure is formed on tracks where data are recorded. A manufacturing method comprises the steps of heat treatment in the range of 500-700° C., preferably 600-630° C., after the formation of the recording layer. In the magneto-optical recording and playback device to record and play back data, the wavelength of light for recording data is different from that for reading data, which is preferable for a magneto-optical recording medium comprising a garnet ferrite layer.

REFERENCES:
patent: 4608142 (1986-08-01), Gomi et al.
patent: 4883710 (1989-11-01), Machida
patent: 5146361 (1992-09-01), Licht
patent: 5169504 (1992-12-01), Bechevet et al.
patent: 5879783 (1999-03-01), Chang et al.
patent: 2655462 (1991-06-01), None
patent: 60018833 (1985-01-01), None
patent: 61039954 (1986-02-01), None
patent: 64017247 (1989-01-01), None

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