| 摘要 |
PURPOSE:To prevent adhesion phenomenon between a magnetic head and a disc by providing a signal source, which generates a vibration current, to apply the vibration current to the voice coil of a positioning control mechanism. CONSTITUTION:Magnetic head group 1 is fitted to carriage 4 through magnetic head arm group 3, and voice coil 5 is fitted to carriage 4 also. Carriage 4 can move in the radius direction of magnetic disc 2 by the magnetism, which is generated by flowing a current to voice coil 5, and the magnetism of permanent magnet 6. The position and the speed signal for movement of carriage 4 can be sent to a control circuit by servo disc 9 and servo head 8. Thus, by flowing the current to voice coil 5, carriage 4 vibrates, and magnetic head 1 vibrates slightly relatively to magnetic disc 2, so that adhesion phenomena between the magnetic head 1 and magnetic disc 2 can be eliminated. |
