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US 2015/0085632 A1Published application
Detection and remediation of head contamination
AssigneeSeagate Technology LLC
InventorsJames Dillon Kiely, Jon D. Trantham
Life of this patent
Estimating the term…
Abstract
A heat generating component of a slider is energized at a predetermined frequency. The heat generating component changes a spacing between a medium and the slider. A temperature response proximate a media-facing surface of the slider is measured while the heating element is energized. Based on the measured temperature response, a determination is made as to whether the media-facing surface is contaminated. In response to determining that the media-facing surface is contaminated, remedial action is taken.
Claims20
A method comprising:
- energizing a heat generating component of a slider at a predetermined frequency to change a spacing between a medium and the slider;
- measuring a temperature response proximate a media-facing surface of the slider while the heat generating component is energized via a dedicated dual-ended temperature coefficient of resistivity sensor separate from a write element and a read element;
- based on the measured temperature response, determining that the media-facing surface is contaminated;
- and
- taking remedial action in response to determining that the media-facing surface is contaminated.
2 more elements
(canceled)
An apparatus comprising:
- a controller capable of being coupled to a slider, the slider comprising:
- a heat generating component that changes a spacing between the slider and a medium;
- and a dedicated dual-ended temperature coefficient of resistivity sensor separate from a write element and a read element that determines temperatures proximate a media-facing surface of the slider, the controller configured to:
- energize the heat generating component at a predetermined frequency;
- measure a temperature response via the dedicated dual-ended temperature coefficient of resistivity sensor while the heat generating component is energized;
- based on the measured temperature response, determine that the media-facing surface is contaminated;
- and
- take remedial action in response to determining that the media-facing surface is contaminated.
5 more elements
(canceled)
A method comprising:
- energizing a heat generating component of a slider at a predetermined frequency, wherein the heat generating component changes a spacing between a medium and the slider;
- measuring a temperature response via a dedicated dual-ended temperature coefficient of resistivity sensor proximate a media-facing surface of the slider while the heat generating component is energized, the dual-ended temperature coefficient of resistivity sensor separate from a write element and a read element;
- based on the measured temperature response, performing a cleaning process;
- in response to the cleaning process, energizing the heat generating component at the predetermined frequency and measuring a second temperature response proximate the media-facing surface while the heat generating component is energized;
- based on the second measured temperature response, determining whether the media-facing surface is contaminated;
- and
- taking remedial action in response to determining that the media-facing surface is contaminated.
4 more elements
Dependencies are inferred from the claim text.