Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

2005-02-08

2005-02-08

Resan, Stevan A. (Department: 1773)

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including a second component containing structurally defined...

C428S328000, C428S336000, C428S690000

Reexamination Certificate

active

06852404

ABSTRACT:
The average major-axis length (L) of a ferromagnetic alloy powder primarily contained together with a binder in a magnetic layer provided on at least one surface of a non-magnetic support is less than 0.10 μm, and the ferromagnetic alloy powder contains Co at a content of 15 to 28 at % relative to Fe, and furthermore, contains Y at a content of 22 μmol/m2 or more with respect to a specific surface area (Sc) calculated from the above-mentioned average major-axis length (L) and the crystallite diameter (d). A coating-type high-recording-density magnetic recording medium has excellent surface properties, an excellent electromagnetic transducing characteristic especially in short wavelength regions and high reliability.

REFERENCES:
patent: 9-91697 (1997-04-01), None
patent: 10-320759 (1998-12-01), None
patent: 11-251122 (1999-09-01), None
patent: 2001-81506 (2001-03-01), None

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