| 摘要 |
PURPOSE:To obtain a magnetic recording medium having an excellent electromagnetic conversion characteristic and running durability by coating a magnetic coating compd. prepd. by dispersing prescribed ferromagnetic powder mixture and resin component into an org. solvent on a nonmagnetic base and subjecting the coating layer to a treatment to attract the pulverized ferromagnetic metallic powder in the coating layer by a magnet then subjecting said layer to an orientation treatment. CONSTITUTION:The magnetic coating compd. prepd. by dispersing the magnetic layer forming components contg. the ferromagnetic powder mixture composed of ferromagnetic oxide powder and/or ferromagnetic hexagonal ferrite powder and pulverized ferromagnetic metallic powder and the resin component into the org. solvent is coated on the nonmagnetic base 1. The coating layer 2 travels in an arrow direction while the base 1 and the magnet 3 maintain the contact. The ferromagnetic powder in the coating layer 2 is attracted to the base 1 side. The magnet 3 in this stage has >=1,500 Gauss, more preferably >=2,500 Gauss magnetic flux density. The coating layer 2 is subjected to the normal orientation treatment by a magnetic field orientation treatment device 4 and is dried by a dryer 5.
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