| 摘要 |
PURPOSE:To obtain a high-quality magnetic recording medium which is balanced overall in performance by forming the recording medium into the combined structure of a thin-film magnetic layer consisting of an iron nitride system, projecting parts, inorg. protective layer and back layer. CONSTITUTION:Rugged shapes 2a are formed on the surface by the fine particles dispersed in a primer coating layer 2 and the projecting parts can be formed on the respective layers provided on the primer coating layer 2 by these rugged shapes 2a. The thin-film magnetic layer 3 consisting of the iron nitride system is provided on the primer coating layer 2 and the inorg. protective layer 4 having lubricity is laminated thereon. The back layer 5 having 200-2,000Angstrom surface roughness is provided on the opposite surface of a plastic base 1. The coefft. of friction of a magnetic layer is lowered by the effect of the projecting parts 4a formed on the outermost layer based on the rugged shapes 2a and the friction resistance is also lowered by the protective layer 4 having lubricity, by which the tape traveling property, durability, wear resistance and corrosion resistance are improved. In addition, the degradation in the head touch property generated by tape oscillations, etc., is suppressed. |
