| 摘要 |
A optical pickup system for use in a disk drive includes a stepping motor, a lead screw supported by a bracket and coupled to the stepping motor, in which the lead screw has spiral grooves formed on an outer periphery of the lead screw and engaged to a slider to move an optical pickup head in a radial direction of a disk, a plurality of guide shafts, installed to a main base in parallel with the lead screw, for guiding the optical pickup head in the radial direction of the disk, and a positioning mechanism for supporting the bracket which is installed to the main base to move in any direction to automatically maintain a position of the lead screw to the slider, thereby minimizing a load applied to the stepping motor.
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