MAGNETIC RECORDING MEDIUM

摘要

PURPOSE:To solve the problem of interlayer adhesion in a magnetic recording medium and the problem of friction. CONSTITUTION:Carbon black having 20-80m<2>/g specific surface area and 120-200ml/100g DBP oil absorption and carbon black having 600-900m<2>/g specific surface area and 180-250ml/100g DBP oil absorption are used in combination in (8:2)-(9.5:0.5) volume ratio in the back layer of a magnetic recording medium.