Magnetic recording member

Details Magnetic recording member Magnetic recording member

1986-11-20

1988-07-19

Lesmes, George F.

Stock material or miscellaneous articles

Composite

Of polyisocyanurate

428469, 428472, 428629, 428632, 428694, 428695, 428701, 428702, 428900, 428928, G11B 562

Patent

active

047584742

ABSTRACT:
Herein is disclosed a magnetic recording member having a high mechanical durability and an improved resistance to wear. The magnetic recording member comprises a substrate, a magnetic layer formed on the surface of the substrate and a first non-magnetic layer of a metal having a low melting point, preferably lower than 400.degree. C. and formed on the magnetic layer, at least the surface of the first non-magnetic layer being oxidized. The magnetic recording member may further contain a lubricant layer.
The surface of the magnetic recording member of the invention presents a roughness lower than 25 nm and includes fine protrusions having a linear density higher than 1.times.10.sup.3 /mm.
The process for the preparation of the magnetic recording member is also disclosed.

REFERENCES:
patent: 4124736 (1978-11-01), Patel et al.
patent: 4224381 (1980-09-01), Patel et al.
patent: 4307156 (1981-12-01), Yanagisawa
patent: 4526833 (1985-07-01), Burguette et al.
patent: 4609962 (1986-09-01), Arai et al.
patent: 4610911 (1986-09-01), Opfer et al.

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