| 摘要 |
A magnetic disc apparatus includes a magnetic disc drive assembly on a base for driving a magnetic disc, a magnetic head supporting assembly disposed on the base for supporting and moving a magnetic head with respect to the magnetic disc for magnetic recording and reproducing and a control circuit for controlling the head supporting assembly. The head supporting assembly includes a rotary actuator, an actuator arm connected to the rotary actuator to swing the head along the surface of the disc in the radial direction thereof, a resilient suspension arm extending from one end of the actuator arm in the longitudinal direction thereof, for resiliently supporting at the extending end thereof a magnetic head. The magnetic head supporting assembly further comprises a deflecting unit which is engageable with the suspension arm for deflecting the suspension arm to move the magnetic head in a direction perpendicular to and away from the recording surface of the disc when the disc is stopped, thereby preventing the heads from contacting the surfaces of the discs when the discs start rotating. This arrangement can be applied to any type of magnetic disc apparatus regardless of whether or not it uses a CSS System.
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