Magnetic recording head and magnetic recording and reproducing device comprising the same
AssigneesKabushiki Kaisha Toshiba, Toshiba Electronic Devices & Storage Corporation
InventorYusuke Tomoda
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Abstract
According to one embodiment, a magnetic recording head includes a main magnetic pole which applies a recording magnetic field to a magnetic recording medium, an auxiliary magnetic pole which faces the main magnetic pole across a recording gap, a first magnetic bypass layer which is provided in a recording gap in a track direction, and a second magnetic bypass layer which is provided in the recording gap in the track direction and is arranged at a distance from the first magnetic bypass layer in a track width direction.
Claims28
A perpendicular magnetic recording head provided on a magnetic recording medium moving in a track direction while recording, the perpendicular magnetic recording head comprising:
- a main magnetic pole which applies a recording magnetic field to the magnetic recording medium;
- an auxiliary magnetic pole which is arranged in the track direction with respect to the main magnetic pole and faces the main magnetic pole across a recording gap;
- a first magnetic bypass layer provided in the recording gap along the track direction;
- and
- a second magnetic bypass layer provided in the recording gap along the track direction and arranged at a distance from the first magnetic bypass layer in a track width direction crossing the track direction.
A magnetic recording head provided on a magnetic recording medium moving in a track direction while recording, the magnetic recording head comprising:
- a main magnetic pole which applies a recording magnetic field to the magnetic recording medium;
- an auxiliary magnetic pole which is arranged in the track direction with respect to the main magnetic pole and faces the main magnetic pole across a recording gap;
- a first extended portion provided in the recording gap and extending from the auxiliary magnetic pole along the track direction;
- and
- a second extended portion provided in the recording gap, extending from the auxiliary magnetic pole along the track direction and arranged at a distance from the first extended portion in a track width direction crossing the track direction.
A perpendicular magnetic recording and reproducing device comprising:
- a disk-shaped magnetic recording medium including a track;
- and
- a perpendicular magnetic recording head which records information on the magnetic recording medium and is provided on the magnetic recording medium moving in a track direction while recording,
- wherein the perpendicular magnetic recording head comprises:
- a main magnetic pole which applies a recording magnetic field to the magnetic recording medium;
- an auxiliary magnetic pole which is arranged in the track direction with respect to the main magnetic pole and faces the main magnetic pole across a recording gap;
- a first magnetic bypass layer provided in the recording gap along the track direction, and
- a second magnetic bypass layer provided in the recording gap along the track direction and is arranged at a distance from the first magnetic bypass layer in a track width direction crossing the track direction.
A magnetic recording and reproducing device comprising:
- a disk-shaped magnetic recording medium including a track;
- and
- a magnetic recording head which records information on the magnetic recording medium and is provided on the magnetic recording medium moving in a track direction while recording,
- wherein the magnetic recording head comprises:
- a main magnetic pole which applies a recording magnetic field to the magnetic recording medium;
- an auxiliary magnetic pole which is arranged in the track direction with respect to the main magnetic pole and faces the main magnetic pole across a recording gap;
- a first extended portion provided in the recording gap and extending from the auxiliary magnetic pole along the track direction;
- and
- a second extended portion provided in the recording gap, extending from the auxiliary magnetic pole along the track direction and arranged at a distance from the first extended portion in a track width direction crossing the track direction.
Dependencies are inferred from the claim text.