Method for cleaning the disc surface and the head support...

Details Method for cleaning the disc surface and the head support... Method for cleaning the disc surface and the head support...

G - Physics

11

B

352/21.22

G11B 23/50 (2006.01) G11B 5/41 (2006.01)

Patent

CA 1168750

METHOD FOR CLEANING THE DISC SURFACE AND THE HEAD SUPPORT STRUCTURE IN A MAGNETIC DISC DRIVE ABSTRACT OF THE DISCLOSURE In a magnetic disc drive, there is disclosed a method for cleaning the magnetic disc surfaces and the heads. The heads are loaded and caused to fly on the disc surfaces. The spindle motor speed is reduced to a speed where the heads fly at approximately 50% of the normal flying height and the head support structure drive motor is commanded to sweep the heads across the disc surfaces, forward and reverse; for several cycles, to remove any particles down to an elevation that is 50% of the normal flying height. The heads are then positioned over unused tracks on the disc surfaces and the spindle motor speed is reduced to a speed where the heads fly at approximately 25% of the normal flying height so as to scrub off any particles left on the heads. The spindle motor speed is then returned to normal speed and a 25% margin of interference-free operation has been assured.

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