| 摘要 |
PROBLEM TO BE SOLVED: To provide an ultra-small optical/magnetic head actuator. SOLUTION: The ultra-small optical/magnetic head actuator includes: a swing arm movable in a horizontal direction and vertical direction and having mounted thereon a head for reading and writing information on/from a disk and a tracking actuator capable of moving the swing arm in the horizontal direction (tracking direction) to the disk. The ultra-small optical/magnetic head actuator further includes: a pivot hinge which adjusts a radius of rotation of the swing arm and guides the movement of the swing arm in the tracking direction and a focusing actuator which moves the swing arm in the vertical direction (focusing direction) with respect to the disk. The focusing actuator includes a focusing coil attached under the swing arm and a Halbach magnet array disposed under the focusing coil. Thus, friction or backlash can be avoided, non-repetitive errors can be reduced and thickness of the ultra-small storage device can be sharply reduced due to the use of a Halbach magnet array. COPYRIGHT: (C)2006,JPO&NCIPI
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