Magnetic recording medium comprising a magnetic layer having specific thickness and projections

摘要

A magnetic recording medium comprising a non-magnetic support, at least one primer layer formed on one surface of the non-magnetic support, a magnetic layer formed on the primer layer, and a backcoat layer formed on the other surface of the non-magnetic support, wherein the magnetic layer has a thickness of 0.30 mum or less and a centerline average surface roughness Ra of 3.2 nm or less, and (P₁-P₀) is 30 nm or less and (P₁-P₂₀) is 5 nm or less in which P₀ is an averaged height of projections of the magnetic layer, and P₁, P₂, - - - and P₂₀ are heights of the highest, the second highest, - - - and the 20th highest projections of the magnetic layer, respectively.