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Hard disk driver with an integrated structure for electrostatically removing dielectric particles generated during the operation, and electrostatic cleaning method for a hard disk driver
Hard disk driver with an integrated structure for electrostatically removing dielectric particles generated during the operation, and electrostatic cleaning method for a hard disk driver
An electrostatic cleaning structure of a hard disk driver is formed by a plurality of concentric conductive regions to which biasing pulse trains are supplied. Each biased conductive region generates an electric field attracting any dielectric particle. The pulse trains supplied to immediately adjacent conductive regions are phase-shifted by a predetermined time and in a direction linked to a desired direction of removal for the electrostatic particles. Voltage pulses sent to each conductive region are delayed with respect to voltage pulses sent to an immediately preceding conductive region in the direction of desired removal, and are advanced with respect the voltage pulses sent to an immediately successive conductive region.
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