| 摘要 |
PROBLEM TO BE SOLVED: To provide a deflection yoke that prevents generation of residual four-pole magnetic field and does not bring about configuration deterioration of the electron beam even when a centering magnet of alnico system magnetic material is used. SOLUTION: The deflection yoke having a centering magnet for centering adjustment is provided. To resolve the above problem, the centering magnet is injection molded by having the even number of injection mold gates placed symmetrically for the centering magnet. And each pole is magnetized and set at any of the opposing gate portions of the centering magnet or at any of the opposing weld line portions.
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