Magnetic head for perpendicular magnetic recording having a main pole and a shield
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United States of America Patent
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Oct 30, 2012
Grant Date -
N/A
app pub date -
Dec 2, 2011
filing date -
Dec 2, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
A magnetic head includes first and second coils, a main pole, a first shield, and first and second return path sections. The first shield and the first return path section are located forward of the main pole in the direction of travel of the recording medium. The first return path section connects the main pole and the first shield so that a first space is defined. The second return path section is located backward of the main pole in the direction of travel of the recording medium so that a second space is defined. The first coil includes at least one first coil element passing through the first space. The second coil includes a plurality of second coil elements passing through the second space. The at least one first coil element is smaller in number than the second coil elements.
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