| 摘要 |
PURPOSE:To mitigate the inverse magnetization to adjacent magnetic plates and the demagnetization due to leaked magnetic field, even if two opposed magnet poles cause position shift, by alternately laminating a permanent magnet plate with different magnetic characterstics and a nonmagnetic substance. CONSTITUTION:Magnet plates 6-11 having different magnetic characteristics and a nonmagnetic substance 12 are combined alternately and laminated. As magnet plate forming an inverted gradually reduced magnetic field, strontium ferrite magnet powder is mixed in ethylenevinyl acetate copolymer, it is formed in a magnetic field and demagnetized, and as the nonmagnetic substance 12, brass plate is used. |
