Perpendicular magnetic recording head
AssigneeKazuyoshi YAMAMORI
InventorsYasushi KANAI, Yoshihiro JINBO
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Abstract
A perpendicular magnetic recording head is provided, which has a head structure that narrows the erase band width in shingled write recording. A perpendicular magnetic recording head has a main pole that generates a recording magnetic field, a trailing shield positioned on the trailing side of the main pole, and a side shield positioned in the cross-track direction of the main pole. In the structure, a gap length (MP−SS distance) between the side shield and the main pole and a gap length (MP−TS distance) between the trailing shield and the main pole satisfy a relationship, (MP−TS distance)×0.5<(MP−SS distance)<(MP−TS distance)×1.5.
Claims20
A perpendicular magnetic recording head for use in shingled write recording, comprising:
- a main pole that generates a recording magnetic field;
- a trailing shield positioned on a trailing side of the main pole;
- and
- a side shield positioned in a cross-track direction of the main pole,
- wherein a gap length (MP−SS distance) between the side shield and the main pole and a gap length (MP−TS distance) between the trailing shield and the main pole satisfy a relationship:
- (MP−TS distance)×0.5<(MP−SS distance)<(MP−TS distance)×1.5.
Dependencies are inferred from the claim text.