Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1984-03-05

1985-04-23

Pianalto, Bernard D.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including a second component containing structurally defined...

428336, 428469, 428693, 428694, 428697, 428699, 428900, H01F 1002

Patent

active

045130540

ABSTRACT:
In a magnetic recording medium comprising a non-magnetic support and two or more magnetic recording layers containing ferromagnetic particles dispersed in a non-magnetic binder, the ferromagnetic particles of the outermost magnetic layer are given a main magnetic anisotropy by a magnetic annealing treatment and the direction of the magnetic anisotropy is vertical to the recording surface. Thus, the vertical magnetization recording is improved.

REFERENCES:
patent: 3859129 (1975-01-01), Chen et al.
patent: 4237506 (1980-12-01), Manly
patent: 4265931 (1981-05-01), Tamai et al.

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