Method for producing magnetic recording media

Details Method for producing magnetic recording media Method for producing magnetic recording media

1985-11-14

1987-07-21

Metz, Andrew H.

Chemistry: electrical and wave energy

Processes and products

204 376, 204 42, C25D 1120

Patent

active

046816690

ABSTRACT:
In production of magnetic recording media by anode oxidation of an Al predominant substrate, deposition of ferromagnetic substance in substrate pores and final grinding, use of a substrate having a surface K-value of 0.5 or larger enables easy production of media with surface roughness well suited for ideal high density magnetic recording. The K-value is the ratio of X-ray reflection intensity of the crystal plane S(1,1,1) and the toal X-ray reflection intensity of all crystal planes.

REFERENCES:
patent: 4109287 (1978-08-01), Kawai et al.
patent: 4430387 (1984-02-01), Nakagawa et al.
patent: 4548682 (1985-10-01), Yoshida et al.
patent: 4563397 (1986-01-01), Ishignro et al.

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