Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

G - Physics

11

B

352/31, 117/24.4

G11B 5/706 (2006.01) G11B 5/708 (2006.01) G11B 5/71 (2006.01) G11B 5/712 (2006.01) H01F 10/10 (2006.01)

Patent

CA 2007925

A magnetic recording medium comprises a non-magnetic substrate and a magnetic recording layer provided on said substrate, comprising (a) 100 parts by weight of magnetic powder, (b) 5 to 15 parts by weight of a mixture of a fatty acid ester and a fatty acid in their weigh ratio of 60/40 to 95/5 and (c) 5 to 15 parts by weight of carbon black having an average diameter of a single particle in the range of 0.1 to 2.0 microns. The magnetic powder is preferably treated on the surface with (1) a phosphate or an alkenyl or alkyl succinic acid and (2) an organosilane compound having a hydrolyzable alkoxysilane group in a molecule.

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