Heat-assisted magnetic recording head-disk clearance setting

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United States of America Patent

PATENT NO 9472225
APP PUB NO 20160232930A1
SERIAL NO

14619795

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Abstract

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A magnetic recording head comprises a transducer, a heater, a writer and a laser. The transducer is configured to write to a magnetic recording medium during a write operation. The heater, writer and laser are configured to affect a protrusion of the transducer. The heater is calibrated to produce a pre-write heater power to obtain a target pre-write clearance for a write operation through use of a clearance-heater power curve. The curve is generated by measuring a clearance between the transducer and the medium as the heater is cycled from zero to a contact power.

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Patent Owner(s)

  • SEAGATE TECHNOLOGY LLC

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Lou, Huazhou Eden Prairie, US 29 367
Riddering, Jason Prior Lake, US 7 61

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