Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

2006-05-09

2006-05-09

Resan, Stevan A. (Department: 1773)

Stock material or miscellaneous articles

Magnetic recording component or stock

Binder media

C428S844000

Reexamination Certificate

active

07041397

ABSTRACT:
A magnetic recording medium having on a nonmagnetic support at least one magnetic layer that contains a ferromagnetic metal powder and a binder and has surface roughness of 3 nm or below, with that the ferromagnetic metal powder has an average major-axis length of 30 to 100 nm and saturation magnetization σs of 70 to 100 A·m2/kg and the magnetic layer further contains SiO2grains having an average size of 5 to 30 nm, which shows excellent electromagnetic conversion characteristics, ensures reduction in MR head abrasion and has enhanced scratch resistance.

REFERENCES:
patent: 4963433 (1990-10-01), Ogawa et al.
patent: 2001-256633 (2001-09-01), None
patent: 2002-92846 (2002-03-01), None

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