Magnetic disc member and process for manufacturing the same

Details Magnetic disc member and process for manufacturing the same Magnetic disc member and process for manufacturing the same

1989-08-23

1992-02-25

Thibodeau, Paul J.

Coating processes

Immersion or partial immersion

427131, 427205, 427435, 427436, B05D 118

Patent

active

050912259

ABSTRACT:
An improved magnetic disc member for use in a magnetic disc device, said member comprising a base plate, a number of fine noble metal particles adhered to a surface thereof to form microprotuberances and a nonmagnetic layer coated further thereon; the surface roughness of the member being controlled by changing a thickness of the nonmagnetic layer.

REFERENCES:
patent: 4778707 (1988-10-01), Arioka et al.
patent: 4828899 (1989-05-01), Arioka et al.
patent: 4835032 (1989-05-01), Arioka et al.
patent: 4959273 (1990-09-01), Hamamura et al.

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