Importance

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Abstract

A tape-shaped magnetic recording medium for executing recording/reproducing processes at a running speed 2m/sec or higher is capable of exhibiting an excellent running characteristic and making it hard to cause print-through as well. This magnetic recording medium comprises a non-magnetic support, a magnetic layer formed on one surface of the non-magnetic support body and containing at least ferromagnetic metal powders and binding agent resin, and a backing layer formed on an opposite surface thereof and containing at least a carbon black and the binding agent resin. In this magnetic recording medium, a three-dimensional root mean square value roughness Rq of the surface of the backing layer is 200 nm or above through 280 nm or under, and a three-dimensional distortion degree Rsk of the surface thereof is -0.2 or under: ##EQU1## where f(x, y) is the roughness surface expressed on the unit of nm on the definition that an X-Y plane is the roughness mean surface, a recessed portion is negative and a protruded portion is positive, and S represents an area of a roughness measurement area on the X-Y plane.

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First Claim