| 摘要 |
PURPOSE:To perform excellent recording and reproducing without decreasing recording and reproducing efficiency by generating magnetic charges at the joint part of a front and a back core and converging magnetic particulates in a magnetic particulate mixed adhesive almost on said joint part. CONSTITUTION:A spring 10 fixed to a fixed block 11 is fitted to the back core 1B through a U-shaped presser jig 9 which has a space not to abut on a coil 3 wound around the back core 1B. When a force is applied from outside of the fixed block 11 while the gap of the front core 1A abuts on a permanent magnet 7, the spring 10 contracts and a leaf spring 8 also flexes; and the permanent magent 7 and front core 1A are fixed in contact because of energing forces of both springs and magnetic charges are produced at the joint part 2, so that the magnetic particulates are converged almost on the joint part 2. Consequently, excellent recording and reproduction are performed without decreasing the recording and reproducing efficiency. |
