MAGNETIC RECORDING MEDIUM

摘要

PROBLEM TO BE SOLVED: To obtain an extremely thin tape-like magnetic recording medium of <=7μm overall thickness having excellent electromagnetic conversion characteristic without causing any clogging. SOLUTION: In this tape-like magnetic recording medium at least of <=7μm overall thickness in which a magnetic layer is provided on a non-magnetic substrate, tape width is >=6.5 mm, and an average surface roughness SRa of the central surface of the magnetic layer is 3 mm<=SRa (Cutoff: 800μm)-SRa (Cutoff: 80μm)<=15 nm. Particularly the non-magnetic substrate is made of aromatic polyamide.