Invention Grant
- Patent Title: Bolometer and contact sensor arrangement for a heat-assisted magnetic recording device
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Application No.: US15960100Application Date: 2018-04-23
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Publication No.: US10229706B1Publication Date: 2019-03-12
- Inventor: Declan Macken , Jon Karsten Klarqvist
- Applicant: Seagate Technology LLC
- Applicant Address: US CA Cupertino
- Assignee: Seagate Technology LLC
- Current Assignee: Seagate Technology LLC
- Current Assignee Address: US CA Cupertino
- Agency: Hollingsworth Davis, LLC
- Main IPC: G11B5/09
- IPC: G11B5/09 ; G11B5/60 ; G11B5/48 ; G11B5/00

Abstract:
A slider of a heat-assisted magnetic recording head comprises an air bearing surface and an optical waveguide configured to receive light from a laser source. The slider comprises a plurality of electrical bond pads including a first bond pad and a second bond pad. A first resistive sensor is configured to sense for spacing changes and contact between the slider and a magnetic recording medium at or near a first close point of the slider. A second resistive sensor is configured to sense for spacing changes and contact between the slider and the medium at or near a second close point of the slider. A bolometer is situated at a location within the slider that receives at least some of the light communicated along the optical waveguide. The first resistive sensor, the second resistive sensor, and the bolometer are coupled together and between the first and second bond pads.
Information query
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