Substrate for a magnetic disk and process for its production

Details Substrate for a magnetic disk and process for its production Substrate for a magnetic disk and process for its production

1988-09-28

1990-05-15

Zimmerman, John J.

Stock material or miscellaneous articles

Composite

Of metal

428694, G11B 582

Patent

active

049257382

ABSTRACT:
A substrate for a magnetic disk, having an anodized aluminum coating layer with pores widened by chemical dissolution so that the total area of pores is from 20 to 80% of the entire surface area.

REFERENCES:
patent: 4650708 (1987-03-01), Takahashi
patent: 4659606 (1987-04-01), Wada et al.
patent: 4761330 (1988-08-01), Tokushima et al.

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