Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1984-09-19

1986-03-18

O'Keefe, Veronica

Stock material or miscellaneous articles

All metal or with adjacent metals

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

428212, 428900, 420435, 360131, 360132, 360133, 360134, 427131, 427132, G11B 566

Patent

active

045768765

ABSTRACT:
A magnetic recording medium comprising a substrate, an underlayer provided on the substrate and having a high permeability magnetic film and a relative permeability in all directions in the film surface of not less than 800, and a recording medium layer provided on the underlayer and having a perpendicular anisotropy. The recording and reproduction characteristics of this magnetic recording medium do not vary even when the direction of movement thereof with respect to a magnetic head varies. When it is applied to a magnetic disc, preferable results can be obtained.

REFERENCES:
patent: 4210946 (1980-07-01), Iwasaki et al.

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