Magnetic recording medium
AssigneeTDK Corporation
InventorsKunihiro Ueda, Koji Kobayashi, Mitsuru Takai, Masashi Higo
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AssigneeTDK Corporation
InventorsKunihiro Ueda, Koji Kobayashi, Mitsuru Takai, Masashi Higo
Estimating the term…
The problem of rusting relating to a magnetic recording medium composed of a non-magnetic base and a magnetic recording layer of a ferromagnetic metal layer formed thereon is overcome by a magnetic recording medium comprising a non-magnetic support, a ferromagnetic metal thin film as a magnetic recording layer and a lubricating layer, wherein the lubricating layer contains a mixture of a first lubricant having a polar perfluoro radial and a second lubricant expressed by the following formula: ##STR1## where R is a divalent radical having 2 or fewer carbons atoms; D is a polar radical selected from phosphorus-containing radical, hydroxyl, carboxyl and esterified carboxyl; R.sup.1 is selected from F, CF.sub.3 and C.sub.2 F.sub.5 ; and R.sup.2 and R.sub.3 are selected from F, CF.sub.3 and C.sub.2 F.sub.5, CF(CF.sub.3).sub.2 and C(CF.sub.3).sub.3.
A magnetic recording medium comprising a non-magnetic support, a magnetic recording layer comprising a ferromagnetic metal thin film formed on the support and a lubricating layer on the ferromagnetic metal thin film wherein the lubricating layer consists essentially of a mixture of a first lubricant expressed by the following formula:
Dependencies are inferred from the claim text.