Optomagnetic recording medium

Details Optomagnetic recording medium Optomagnetic recording medium

1986-04-01

1988-08-02

Lesmes, George F.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

4283191, 428336, 428472, 428694, 428900, G11B 724

Patent

active

047613300

ABSTRACT:
In production of an optomagnetic recording medium having a porous anode oxidized coat on a base plate, a thin film of magnetic material of high saturated magnetization is developed after grinding and etching following formation of the anode oxidized coat in order to increase the effective reflection plane, thereby greatly raising accuracy of detection of the polarization angle at reading-out of signals.

REFERENCES:
patent: 4109287 (1978-08-01), Kawai et al.
patent: 4210946 (1980-07-01), Iwasaki et al.
patent: 4277809 (1981-07-01), Fisher et al.
patent: 4430387 (1984-02-01), Nakagawa et al.
patent: 4548682 (1985-10-01), Yoshida et al.

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