| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for manufacturing a pulser ring which can increase magnetization intensity in spite of a half-cell magnetizing method and assure a magnetic characteristic with high accuracy. SOLUTION: For example, five magnetization yokes 11, 12 and 13 which face magnetic poles so as to interpose a magnetized member 3 between both plates are disposed at gaps corresponding to 1 pitch, and the magnetic poles of these magnetization yokes 11, 12 and 13 are formed alternately in the direction of moving the magnetized member. Further, the central magnetization yoke 11 is formed as a main magnetization yoke having maximum magnetization intensity, and the magnetization intensity of the remaining magnetization yokes 12, 13 is weakened as being away from the main magnetization yoke 11, thereby magnetizing to the magnetized member 3. |
