Magnetic recording medium
AssigneeFuji Photo Film Co., Ltd.
InventorsTsutomu Okita, Toshio Ishida
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AssigneeFuji Photo Film Co., Ltd.
InventorsTsutomu Okita, Toshio Ishida
Estimating the term…
A magnetic recording medium is described, which comprises a nonmagnetic support having provided thereon a lower layer comprising nonmagnetic or ferromagnetic particles and a binder resin, and an upper layer provided on the lower layer comprising ferromagnetic metal particles and a binder resin, wherein at least said upper layer contains as a lubricant a compound represented by the following formula (1) in an amount of 1% by weight or more based on the amount of the ferromagnetic metal particles contained in the upper layer: R.sup.1 --COO--R--OCO--R.sup.2 (1) wherein R represents --(CH.sub.2).sub.n -- or a divalent group derived from --(CH.sub.2).sub.n -- which may contain an unsaturated bond, in which n is an integer of from 1 to 10, or R represents ##STR1## and R.sup.1 and R.sup.2 are the same or different and each represents a chain unsaturated hydrocarbon group having from 12 to 26 carbon atoms.
A magnetic recording medium comprising a nonmagnetic support having provided thereon a lower layer comprising nonmagnetic or ferromagnetic particles and a binder resin, and an upper layer provided on the lower layer comprising ferromagnetic metal particles and a binder resin, wherein both said lower layer and said upper layer contains as a lubricant a compound represented by the following formula (1) in an amount in said upper layer of 1% by weight or more based on the amount of the ferromagnetic metal particles contained in said upper layer:
Dependencies are inferred from the claim text.