Patent ID: 8064171
Filing Date: 2011-11-22
Classification: G11B

Abstract:
1. A magnetic disk drive, having a magnetic disk, a magnetic. head that writes and reads an information signal into/from the magnetic disk, an actuator that moves the magnetic head to a desired position on the magnetic disk, and a voice coil motor that applies drive force to the actuator, characterized in that: the actuator is mounted with the magnetic head at one end, and a loop coil at the other end, and is rotatable around a pivot axis, the voice coil motor has a flat magnet that faces the coil, and generates a magnetic field, and has yokes that apply the magnetic field generated by the magnet to the coil, and the magnet is provided with a magnetic flux guiding section, absorbing leakage flux from the magnet, on a most distal end of the magnet as viewed from the pivot axis.