Magnetic recording medium, production process thereof, and...

Details Magnetic recording medium, production process thereof, and... Magnetic recording medium, production process thereof, and...

2005-08-09

2005-08-09

Rickman, Holly (Department: 1773)

Stock material or miscellaneous articles

Magnetic recording component or stock

Thin film media

C428S829000, C427S131000

Reexamination Certificate

active

06926977

ABSTRACT:
A magnetic recording medium having a non-magnetic substrate, a non-magnetic undercoat layer, a plurality of magnetic layers, and a protective film, is disclosed. At least one non-magnetic coupling layer is provided above the non-magnetic undercoat layer, a first magnetic layer is provided beneath the non-magnetic coupling layer and a second magnetic layer is provided atop the non-magnetic coupling layer, and the first magnetic layer is formed of a CoRu-based alloy, a CoRe-based alloy, a CoIr-based alloy, or a CoOs-based alloy.

REFERENCES:
patent: 5759681 (1998-06-01), Hosoe et al.
patent: 6280813 (2001-08-01), Carey et al.
patent: 6623874 (2003-09-01), Kanbe et al.
patent: 6623875 (2003-09-01), Inomata et al.
patent: 2003/0148143 (2003-08-01), Kanbe et al.
patent: 2004/0013910 (2004-01-01), Acharya et al.

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