Disk surface defect detection
AssigneeSeagate Technology LLC
InventorsLihong Zhang, Samuel Gan, Xiong Liu
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Abstract
The present application provides a transducer head comprising a laser source configured to heat a target storage medium surface, and a thermal sensor configured to detect a defect on the target storage medium surface. The present application also provides a method comprising heating a target storage medium surface with an energy source configured in a transducer head to irradiate the target storage medium surface, and detecting a defect on the target storage medium surface using a thermal sensor configured in the transducer head. Other implementations are also described and recited herein.
Claims20
A transducer head comprising:
- an energy source configured to heat a target storage medium surface;
- and
- a thermal sensor configured to detect a defect on the target storage medium surface.
A defect detection system comprising:
- a transducer head, comprising an energy source configured to heat a target storage medium surface and a differential-ended thermal coefficient of resistance (DETCR) sensor configured to detect a defect on the target storage medium surface.
A method comprising:
- heating a target storage medium surface with an energy source configured in a transducer head to irradiate the target storage medium surface;
- and
- detecting a defect on the target storage medium surface using a thermal sensor configured in the transducer head.
Dependencies are inferred from the claim text.