| 摘要 |
PURPOSE:To mold a resin magnet of a high orientation factor, by providing the apparatus for moving a second permanent magnet, and by making the second permanent magnet move in both the directions of it going near to and away from a first permanent magnet opposed against it. CONSTITUTION:When it is desired for the magnetic flux density of the magnetic field, which is generated by a first permanent magnet 24b and passes a cavity C, to be less than the magnetic flux density of the magnetic field generated by a first permanent magnet 24a, by operating an adjusting screw 38b, a second permanent magnet 28b is so moved as to go away from the first permanent magnet 24b. Thereby, the magnetic flux density of the magnetic field, which is generated by the first permanent magnet 24b and passes the cavity C, can be made less than other magnetic flux densities. Therefore, the magnetic fields for molding the magnet roll of a copying machine, etc., which require the magnetic flux densities in respective magnetic poles to be different from each other, can be generated easily. |
