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US 9,805,753 B2Granted
Enhanced write pole and return pole for improved areal density
AssigneeWestern Digital Technologies, Inc.
InventorsKuok San Ho, Suping Song, Petrus Antonius Van Der Heijden
Life of this patent
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Abstract
A system, according to one embodiment, includes: a main pole; and a trailing shield. A first distance D1 is defined in a track direction between the trailing shield and a pole tip region of the main pole; and a second distance D2 is defined in the track direction between the trailing shield and a second region of the main pole located behind the pole tip region, where D2 is greater than D1. Other systems, and methods are described in additional embodiments.
Claims15
A system, comprising:
- a main pole;
- a trailing shield;
- and
- a lower bump on the main pole between the main pole and a leading shield, the lower bump comprising a magnetic material,
- wherein a first distance D1 is defined in a track direction between the trailing shield and a pole tip region of the main pole;
- wherein a second distance D2 is defined in the track direction between the trailing shield and a second region of the main pole located behind the pole tip region,
- wherein D2 is greater than D1.
4 more elements
A system, comprising:
- a main pole;
- a trailing shield;
- and
- an upper bump on the main pole between the main pole and the trailing shield, the upper bump comprising a magnetic material,
- wherein a first distance D1 is defined in a track direction between the trailing shield and a pole tip region of the main pole;
- wherein a second distance D2 is defined in the track direction between the trailing shield and a second region of the main pole located behind the pole tip region,
- wherein D2 is greater than D1, wherein the upper bump tapers in the track direction toward a media facing side thereof.
4 more elements
Dependencies are inferred from the claim text.