Importance

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Abstract

Disclosed is a magnetic recording medium having a flexible nonmagnetic support, a nonmagnetic layer containing a nonmagnetic powder and a binder on the support, and a magnetic layer containing a ferromagnetic powder and a binder. The magnetic layer has an average thickness d of 0.01 to 0.3 .mu.m, a ratio .sigma./d of a standard deviation .sigma. in the thickness of the magnetic layer to the average thickness d equal to or less than 0.5, and, according to the roughness spectrum of a magnetic layer surface measured with an atomic force microscope, a PSD of 0.5 nm.sup.2 or lower in a wavelength of 1 to 5 .mu.m and a PSD of 0.02 to 0.5 nm.sup.2 in a wavelength of 0.5 .mu.m or more to less than 1 .mu.m.

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First Claim