Patent ID: 7090936

Claim:
A magnetic recording medium comprising a lower non-magnetic layer containing at least a non-magnetic powder and a binder resin on a non-magnetic support, and an upper magnetic layer with a thickness of 0.2 μm or less on said lower non-magnetic layer, wherein said lower non-magnetic layer contains an acicular powder of hydrated iron oxide as the non-magnetic powder of a quantity in a range of approximately 40% to 80% by weight of the lower non-magnetic layer, and said lower non-magnetic layer contains a fatty acid and a fatty acid amide, a quantity of the fatty acid by weight being in an approximate range of 0.8 to 4.0 parts relative to 100 parts by weight of the acicular powder of hydrated iron oxide and a quantity of the fatty acid amide by weight being in an approximate range of 0.4 to 2.0 parts relative to 100 parts by weight of the acicular powder of hydrated iron oxide.