Invention Grant
- Patent Title: Clearance adjustment for a head disk interface
- Patent Title (中): 头盘接口的间隙调整
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Application No.: US14728409Application Date: 2015-06-02
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Publication No.: US09484052B1Publication Date: 2016-11-01
- Inventor: Michael T. Johnson , Manual Anaya-Dufresne
- 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: Kagan Binder, PLLC
- Main IPC: G11B5/60
- IPC: G11B5/60

Abstract:
A method of controlling clearance in a disk drive, including the steps of: mounting a recording head having at least one heating element at a first distance from a top surface of the disk; measuring a first passive fly height between the top surface of the disk and a bottom surface of the head; applying a first quantity of energy to the heating element(s) to permanently deform the head and change the distance between the top surface of the disk and a bottom surface of the head to a second passive fly height that is less than the first passive fly height; and applying a second quantity of energy to the heating element(s) to temporarily deform the head and change the distance between the top surface of the disk and a bottom surface of the head to an operational clearance distance that is less than the second passive fly height.
Information query
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