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AssigneeQuantum Corporation
InventorsMichael R. Hatch, Stephen P. Williams, Jwo-Min Wang
Estimating the term…
An optimized bump and offset along the spring section of a load beam of a head-gimbal assembly ("HGA") in the loaded state redistributes the mass and stiffness distributions of the load beam from a truly flat state, so that the mode shape of the first torsional resonance mode is changed such that the coupling between a drive actuator head arm and the head slider is essentially eliminated. A fabrication method to produce the desired bump and offset, and a characterization method to ascertain that optimized bump and offset parameters have been achieved are also disclosed. By optimizing bump and offset, the slider remains independent from any load beam first torsional vibration even at resonance and/or sway mode resonant frequency of the HGA may be increased.
A method for forming an unformed load beam to have zero torsional gain within a disk drive head-gimbal assembly when loaded in proximity with a rotating data storage disk wherein the load beam includes a connection portion affixed to a head arm, a spring portion extending from the connection portion, a reinforced portion extending from the spring portion and a slider-gimbal portion extending from the reinforced portion for gimbal-mounting a head-slider, the method comprising the steps of:
A method for forming an unformed load beam to maximize resonant frequency of sway mode within a disk drive head-gimbal assembly when loaded in proximity with a rotating data storage disk wherein the load beam includes a connection portion affixed to a head arm, a spring portion extending from the connection portion, a reinforced portion extending from the spring portion and a slider-gimbal portion extending from the reinforced portion for gimbal-mounting a head-slider, the method comprising the steps of:
Dependencies are inferred from the claim text.