| 摘要 |
PURPOSE:To carry out a random orienting treatment, and to obtain a recording medium suitable for a floppy disk, etc., by applying a magnetic layer with an AC magnetic field less than the coercive force of magnetic particles. CONSTITUTION:While coated magnetic paint is undried and still fluid, a magnetic recording medium 2 is run through an AC magnetic field producing device 1 such as an AC solenoid, and this device applies the magnetic layer with an AC magnetic field less than the coercive force of magnetic particles so that the degree of orientation is about 1.0. |
