Title:
MAGNETIC ROLL
Document Type and Number:
Japanese Patent JP3417420
Kind Code:
B2
Abstract:
PURPOSE: To strengthen the magnetic force of a desired magnetic pole by providing a shaft at the eccentric position of a magnet and arranging the shaft so that magnetic volume at a pole part where strong magnetic force is required may be maximum.
CONSTITUTION: The shaft A is positioned in the magnet M so that it may be arranged at the eccentric position that the magnetic volume at the pole where the maximum magnetic force is required is maximum. In the case the shaft A is a magnetic substance, it is consecutively molded by an insert extrusion molding method by using a magnetic field orientation die provided with a crosshead designed so that the shaft A may be disposed in such positional relation that the magnetic force of the pole where the maximum magnetic force is required is maximum considering a magnetic circuit constituted of the magnet and the shaft A. As to another method, only a bonding magnet is worked to be a long-sized substance by the extrusion molding method and magnetized after specified processing, then stuck to the outer peripheral surface of the shaft previously cut to specified length.
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Inventors:
Masaharu Iwai
Yasushi Kakehashi
Yasushi Kakehashi
Application Number:
JP31413492A
Publication Date:
June 16, 2003
Filing Date:
October 28, 1992
Export Citation:
Assignee:
Kanegafuchi Chemical Industry Co., Ltd.
International Classes:
G03G15/09; H01F1/08; H01F7/02; (IPC1-7): G03G15/09; H01F1/08; H01F7/02
Domestic Patent References:
| JP62108272A | ||||
| JP466987A | ||||
| JP55157218A | ||||
| JP421880A | ||||
| JP5810453U | ||||
| JP625606U |
Attorney, Agent or Firm:
Takao Yagino