| 摘要 |
PURPOSE:To improve erasure efficiency by providing one set of arms coupled so as to clip one set of erasure core pairs from the outside to one end of a common rear core connecting rear terminals of the one set of erasure core pairs. CONSTITUTION:A rear core 15 has a plane part 15a connecting rear ends of erase cores 5, 8 and left/right arms 15b provided to the plane part 15a continuously while being bent. The left/right arms 15b are arranged to clip erasure cores 6, 9 from the outside. Thus, the arms 15b are in contact with a face perpendicular in the track width direction of the erasure cores 6, 9, and then the coupling area between the erasure cores 6, 9 and the rear core 15 is increased, the magnetic resistance of the area is decreased and the erasure efficiency is increased.
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