Magnetic recording medium and reproduction process using the same

Abstract

A magnetic recording medium containing: a support; and a magnetic layer containing a ferromagnetic powder and a binder, wherein the magnetic layer has 100 or less protrusions per 900 μm2 on a surface thereof, the protrusion having a height, as measured by AFM, of 30 nm or more, the magnetic layer has a magnetic switching volume of from 0.1×10−17 to 5×10−17 mL, the magnetic layer has a coercive force of 2,000 Oe (159.2 KA/m) or more, and a surface of the support, the surface being opposed to the magnetic layer, has a PSD in a machine direction, as measured by an interferometric roughness tester with a magnification of 5 times, of from 500 to 4,000 μm3 at a space wavelength of 10 μm, and a reproduction process containing reproducing the magnetic recording medium by an MR head.

Dependencies are inferred from the claim text.