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US 9,202,497 B2Granted
Adjusting a clearance between a magnetic head and a magnetic recording medium using a magnetic force
AssigneeSeagate Technology LLC
InventorsChris Rea, Raul Horacio Andruet
Life of this patent
Estimating the term…
Abstract
A media-facing surface of a magnetic head is positioned proximate a moving magnetic recording medium. A current is applied to an electromagnet of the magnetic head. The current induces a magnetic force between the magnetic head and the magnetic recording medium that adjusts a clearance therebetween.
Claims20
A method comprising:
- positioning a media-facing surface of a magnetic head proximate a moving magnetic recording medium;
- and
- applying a clearance control current to an electromagnet of the magnetic head, the clearance control current inducing a magnetic force between the magnetic head and the magnetic recording medium that controls a clearance therebetween.
A magnetic head comprising:
- a media-facing surface that is held proximate a moving magnetic recording medium;
- a write coil;
- and
- an electromagnet positioned proximate the media-facing surface and separate from the write coil, the electromagnet inducing, in response to an applied clearance control current, a magnetic force between the magnetic head and the magnetic recording medium that controls a clearance therebetween.
1 more element
A system comprising:
- a magnetic recording medium;
- a magnetic head comprising:
- a media-facing surface that is held proximate to the magnetic recording medium;
- and
- an electromagnet positioned proximate the media-facing surface;
- and
- a control circuit coupled to the magnetic head and applying a clearance control current to the electromagnet, the current producing a magnetic force between the magnetic head and the magnetic recording medium that controls a clearance therebetween.
4 more elements
Dependencies are inferred from the claim text.