Magnetic recording medium and method of producing the same

Details Magnetic recording medium and method of producing the same Magnetic recording medium and method of producing the same

1996-10-23

1999-11-02

Nguyen, Nam

Stock material or miscellaneous articles

Composite

Of inorganic material

428 653, 428141, 428694TP, 428694SG, 2191216, 21912165, 21912166, 21912176, 21912178, G11B 572, B23K 2600

Patent

active

059767146

ABSTRACT:
The present invention relates to a magnetic recording medium comprising at least a magnetic layer, optionally by means of an under layer and an intermediate layer thereon, on a non-magnetic substrate and, occasionally a protective layer disposed on the magnetic layer, wherein projections each of a shape having a plurality of protrusions per one projection are formed by the number of from 10 to 10.sup.6 per 1 mm.sup.2 by irradiation of energy beam to a surface of at least one of the substrate, the under layer, the intermediate layer, the magnetic layer and the protective layer.

REFERENCES:
patent: 4997696 (1991-03-01), Kamada et al.
patent: 5062021 (1991-10-01), Ranjan et al.
patent: 5277960 (1994-01-01), Tsuya et al.
patent: 5549954 (1996-08-01), Otsuka et al.
patent: 5599590 (1997-02-01), Hayashi et al.
patent: 5652040 (1997-07-01), Yamada et al.
patent: 5681636 (1997-10-01), Marshall
patent: 5820969 (1998-10-01), Satoh

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