| 摘要 |
A magnetic recording medium comprising a support having provided on one side thereof a magnetic layer containing a ferromagnetic powder and a binder, wherein the magnetic layer surface has protrusions having a height of from 20 to 50 nm in the number of from 20 to 150 per 900 mum2 of the surface, and a magnetic recording medium comprising a support having provided thereon a magnetic layer containing a ferromagnetic powder and a binder, wherein the magnetic layer surface has the following protrusion distributions of the protrusion heights: protrusion number a of protrusion height of region A (20 nm or more and less than 30 nm) accounts for from 52.5 to 92.5% (A), protrusion number b of protrusion height of region B (30 nm or more and less than 40 nm) accounts for from 9 to 29% (B), and protrusion number c of protrusion height of region C (40 nm or more) accounts for from 0 to 18.5% (C), where 100xa/(a+b+c)=A, 100xb/(a+b+c)=B, and 100xc/(a+b+c)=C.
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