Measuring and testing – Surface and cutting edge testing
Reexamination Certificate
2011-05-24
2011-05-24
Noland, Thomas P (Department: 2856)
Measuring and testing
Surface and cutting edge testing
C073S001890
Reexamination Certificate
active
07946156
ABSTRACT:
Glide test systems and associated methods are described. A glide test system includes a glide test head that is flown over the surface of a recording disk to detect asperities on the recording disk. The glide test head includes a detection pad on the trailing end of the head. Heating elements are fabricated proximate to the detection pad. The heating elements are independently controllable to control the amount of protrusion of different regions of the detection pad. The heating elements thus provide a way to substantially flatten the detection surface of the detection pad, and compensate for an uneven topography on a detection surface.
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Duan Shanlin
He Jizhong
Marchon Bruno
Nayak Ullal V.
Duft Bornsen & Fishman LLP
Hitachi Global Storage Technologies - Netherlands B.V.
Noland Thomas P
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