| 摘要 |
PURPOSE:To obtain a magnetic disc excellent in the sliding proof characteristic and the magnetic characteristic by imbedding a reinforcement member to an aluminum base with a surface plate turned while the aluminum base is processed with the surface plate so as to form a magnetic film to the aluminum base. CONSTITUTION:After an aluminum base 1 is arranged between upper and lower surface plates 7 with polishing cloth 6 adhered thereto via a deflection carrier 8, the aluminum base 1 is pressed and then the upper/lower surface plates 7 are turned while a solution including the reinforcing material 3 is supplied continuously from a solution supply pipe 10. The reinforcing material 3 is imbedded to the surface of the aluminum base 1 in this way. After the surface of the aluminum base 1 is rinsed, a magnetic paint 4 is coated. A magnetic disc is obtained by polishing and finishing the magnetic coating film to reach a prescribed thickness finally. Thus, the reinforcing material is fixed solidly and aggregation of the reinforcement, aggregation of magnetic powder around the reinforcement member are prevented, then the magnetic disc excellent in the sliding proof characteristic and magnetic characteristic is obtained.
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