The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 11, 2017
Filed:
Aug. 10, 2016
Applicant:
Seagate Technology Llc, Cupertino, CA (US);
Inventors:
Huazhou Lou, Eden Prairie, MN (US);
Jason Riddering, Prior Lake, MN (US);
Assignee:
SEAGATE TECHNOLOGY LLC, Cupertino, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/02 (2006.01); G11B 7/1267 (2012.01); G11B 5/09 (2006.01); G11B 7/1263 (2012.01); G11B 5/00 (2006.01);
U.S. Cl.
CPC ...
G11B 7/1267 (2013.01); G11B 5/09 (2013.01); G11B 7/1263 (2013.01); G11B 2005/0021 (2013.01);
Abstract
A heat-assisted magnetic recording (HAMR) head includes a reader, a writer, a writer heater, a laser, and a near-field transducer (NFT). A processor is coupled to the head and configured to perform laser writeability calibration of the head. The processor is also configured to concurrently while performing the laser writeability calibration, correct for laser induced writer protrusion (LIWP) at a writer/NFT region of the head using writer clearance calculations based on reader clearance measurements.