Patent ID: 7855856

Claim:
A disk drive comprising: a recording medium rotatably supported; a rotary section for spinning the recording medium; a slider having a head; a supporting arm having the slider at a first end thereof such that the slider faces the recording medium and a vertically depressable second end; a bearing for holding the supporting arm rotatably along a recording surface of the recording medium and holding the supporting arm pivotably in a vertical direction with respect to the recording surface; an elastic section for applying thrusting force to the first end of the supporting arm toward the recording medium; and a driver for rotating the supporting arm along the recording surface of the recording medium; wherein when the driver rotates the supporting arm along the recording surface of the recording medium and then parks the head at a given evacuation area on the recording medium, the vertically depressable second end of the supporting arm is depressed for reducing the thrusting force applied by the elastic section to the first end of the supporting arm, and wherein the driver includes a coil disposed at the second end of the supporting arm and a magnet which applies magnetic field to the coil, wherein an electric current running through the coil and the magnetic field generated by the magnet produce Lorentz force in a vertical direction with respect to the recording medium, which depresses the vertically depressable second end of the supporting arm.