Glide head for testing a disc surface
AssigneeSeagate Technology LLC
InventorsWei Hsin Yao, Ramesh Sundaram
Life of this patent
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Abstract
An improved glide head is useful for testing the glide quality of a disc. The glide head includes an air bearing surface, pads extending from the air bearing surface and a contact sensor, the contact sensor providing an output in response to an impact on the pad. The air-bearing surface defines a resting plane. The pad protrudes from the air-bearing surface such that the pad projects below the resting plane of the air-bearing surface.
Claims20
A glide head comprising:
- a means for detecting vibrations within a glide head;
- and
- a means for inducing vibrations within a glide head following collision with an object, the inducing means extending below a resting plane defined by the glide head absent the vibration inducing means.
A glide head comprising:
- an air-bearing surface having a resting plane;
- a pad protruding from the air-bearing surface, the pad projecting below the resting plane of the air-bearing surface;
- and
- a contact sensor, the contact sensor providing an output in response to an impact on the pad.
A method of evaluating the glide quality of a disc, the method comprising measuring vibrations within a glide head resulting from contact between the disc while spinning and the glide head while the glide head is positioned near the spinning disc, the glide head having a pad protruding from a bottom air bearing surface such that the pad extends below the lowest point of the air bearing surface relative to the plane of the spinning disc.
Dependencies are inferred from the claim text.