| 摘要 |
PURPOSE:To improve surface characteristics and durability by mixing carbon black and fatty acid as well as fatty acid ester and a polishing agent in combination at a specific ratio and incorporating said mixture in a magnetic layer. CONSTITUTION:1-20wt% (Based on the weight of a magnetic material) carbon of about <=10mmu average particle size, 0.1-3wt% (based on the weight of the magnetic material) fatty acids and fatty acid ester such as stearic acid, aluminum stearate or the like and 1-15wt% (based on the weight of the magnetic material) a polishing agent of >=6 Mohs hardness such as Cr2O3 are incorporated in a magnetic layer for magnetic recording consisting of the magnetic material and a binder. |
