Patent ID: 6826018
Filing Date: 2004-11-30
Classification: G11B

Abstract:
A disk drive comprising:a spinnably supported recording medium; spinning means for spinning said recording medium; a head supporting device provided with a support arm and a head mounted to an underside surface at one end of said support arm, said support arm disposed in a rotatable manner about a bearing unit in any of a radial direction of said recording medium and a perpendicular direction to a writing surface of said recording medium, said head supporting device further having first resilient means for impressing a thrusting force on said support arm in a direction toward said recording medium and second resilient means for turning said support arm in a direction away from the writing surface of said recording medium; first rotating means for rotating said support arm in the radial direction of said recording medium; second rotating means for thrusting said support arm in a manner to turn said support arm in the perpendicular direction with respect to the writing surface of said recording medium; and control means electrically in connection with said head, said spinning means, said first rotating means and said second rotating means, for exchanging a signal with said head, for controlling spinning of said recording medium, and for controlling rotation of said support arm; wherein said bearing unit of said head supporting device is provided with a pivot pedestal having a pair of bosses disposed in a manner to contact with said support arm, and said support arm is disposed rotatably in the perpendicular direction to the writing surface about a fulcrum served by points where said bosses on said pivot pedestal abut upon said support arm.