Magnetic recording medium and method for the manufacture thereof

Details Magnetic recording medium and method for the manufacture thereof Magnetic recording medium and method for the manufacture thereof

1993-07-30

1995-12-12

Thibodeau, Paul J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Continuous and nonuniform or irregular surface on layer or...

2041921, 2041922, 428161, 428611, 428612, 428660, 428666, 428681, 428694T, 428694TS, 428694TP, 428694TR, 428704, 428900, G11B 566, G11B 570, B32B 904, C23C 1432

Patent

active

054748305

ABSTRACT:
To improve the sliding characteristics of a magnetic head by reducing a friction coefficient, and realize a magnetic recording medium with a high recording density and a large capacity, capable of reducing the flotation distance of the magnetic head. On the surface of a base, aluminum containing nitrogen aggregates locally to form islands of metal deposits, which are distributed discretely over the entire surface of the base. Meanwhile, on the metal deposits, a metal base layer, a magnetic layer, a protective layer, and a lubrication layer are laminated sequentially to form a magnetic recording disk. On the disk surface, ultrafine irregularities are formed that reflect the shapes of the metal deposits, thereby realizing a reduction in the friction coefficient.

REFERENCES:
patent: 4499138 (1985-02-01), Yamamoto
patent: 4643915 (1987-02-01), Arai et al.
patent: 5134038 (1992-07-01), Baseman et al.

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