| 摘要 |
<p>PURPOSE:To improve reproduced output and traveling durability by using a binder which is specified in the saturation magnetization quantity, specific surface area by a BET method, average grain size and coercive force of a ferromagnetic material and contg. at least 1X10<-5>eq/g polar group. CONSTITUTION:The binder, the ferromagnetic material of which has >=60emu/g saturation magnetization quantity, 25-70m<2>/g specific surface area by the BET method, 0.01-0.2mum average grain size and 400-2,000 oersted coercive force, and which has at least 1X10<-5>eq/g polar group is used for the above-mentioned recording medium formed by providing the magnetic layer dispersed with the ferromagnetic material which is hexagonal planar and has the axis of easy magnetization in the direction perpendicular to the plane surface on a nonmagnetic base. The sufficient reproduced output is not obtainable and the recording medium is not adequate for high-density recording if the saturation magnetization quantity is smaller than 60emu/g. The magnetic recording medium which is improved in the reproduced output, has high C/N and improved in traveling durability is thereby obtd.</p> |
