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AssigneesKonica Corporation, TDK Corporation
InventorsRyosuke Isobe, Hideaki Wakamatsu, Akira Saitoh, Akihiko Seki
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Disclosed is a magnetic recording medium which comprises a non-magnetic support and a magnetic layer formed thereon and containing at least ferromagnetic metallic powder, and the medium contains an aliphatic acid, wherein average existence ratios of elements in terms of the number of atoms forming the surface of the ferromagnetic metallic powder which is being subjected to orientation treatment in the magnetic layer, are less than 1 of sodium (Na), 40 or less of alkaline earth elements, and 1 to 50 of rare earth elements based on the number of iron (Fe) atom as 100, and the number of carbon atoms of the aliphatic acid being 12 to 24.
A magnetic recording medium comprising a non-magnetic support and a magnetic layer thereon, said magnetic layer containing a binder, a ferromagnetic metallic powder, and an aliphatic acid having 12 to 24 carbons,
A magnetic recording medium comprising a non-magnetic support and a magnetic layer thereon, said magnetic layer containing a binder, a ferromagnetic metallic powder, and an aliphatic acid having 12 to 24 carbon atoms,
Dependencies are inferred from the claim text.