Magnetic recording medium and method of producing same

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

1992-09-16

1998-04-28

Kiliman, Leszek

Stock material or miscellaneous articles

Composite

Of inorganic material

428834TS, 428694TN, 428665, 428666, 428667, 428678, 428900, G11B 566

Patent

active

057442568

ABSTRACT:
The present invention relates to a high-density magnetic recording medium (or "media" as it is sometimes called) for a recording/reproduction system (such as thosed used in computer disk drives) and, more particularly, to a magnetic recording medium having a plurality of magnetic recording layers such that the uppermost layer is comparatively thinner and more densely structured than the lower magnetic recording layers. The present magnetic recording medium comprises a non-magnetic plated substrate, a non-magnetic underlying layer laminated on the plated substrate, a plurality of magnetic alloy layers including the uppermost layer laminated onto the underlying layer, a non-magnetic covering layer laminated onto the uppermost layer, and a lubricating layer formed onto the non-magnetic covering layer. The present invention improves the corrosion resistance of an alloy-type magnetic recording medium while maintaining or exceeding the recording/reproducing characteristics of such media, all at a desirable cost of production.

REFERENCES:
patent: 4550062 (1985-10-01), Takayama
patent: 5006388 (1991-04-01), Kuzuo
patent: 5023148 (1991-06-01), Fisher
patent: 5024903 (1991-06-01), Mizukami

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