Stock material or miscellaneous articles – Magnetic recording component or stock – Binder media
Reexamination Certificate
2007-02-13
2007-02-13
Bernatz, Kevin M. (Department: 1773)
Stock material or miscellaneous articles
Magnetic recording component or stock
Binder media
C428S844300, C428S844000
Reexamination Certificate
active
10983677
ABSTRACT:
A magnetic recording medium having a non-magnetic support and a magnetic layer formed thereon, wherein the magnetic layer comprises a ferromagnetic powder, a binder and a non-magnetic inorganic powder, and wherein at least 95% of the non-magnetic powder particles contained in the magnetic layer have a particle size of 0.05 to 0.013 μm, provide that the non-magnetic powder particles are those found in a field of view of 1.8 μm×2.4 μm when the surface of the magnetic layer is observed with a scanning electron microscope at a magnification of 50,000 times.
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Inoue Tetsutaro
Yoshimura Ken
Bernatz Kevin M.
Birch & Stewart Kolasch & Birch, LLP
Hitachi Maxell Ltd.
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