Disk drive with side erase control
AssigneeHitachi Global Storage Technologies Netherlands B.V.
InventorsNaoki Satoh, Hiroyuki Tsuchinaga, Terumi Takashi
Life of this patent
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Abstract
Embodiments of the invention provide a disk drive that is capable of effectively controlling a side erase, which is one of the problems with the use of the perpendicular recording technology. In one embodiment, tracks on a recording medium are formed concentrically or spirally by overwriting a primary side track, which is either an inner track or outer track, onto part of a secondary side track, which is on the side away from the primary side track. A head unit is installed so that a magnetic head positioned at one end of the head unit relatively may move over the recording medium and that the yaw angle prevailing at an end track of the primary side on the recording medium may be substantially zero.
Claims20
A disk drive comprising:
- a perpendicular recording medium on which concentric or spiral tracks are formed;
- a control section configured to overwrite a primary side track, which is either an inner track or an outer track on the perpendicular recording medium, onto part of a secondary side track, which is on the side away from the primary side track;
- and
- a head unit that turns on a central shaft, wherein a perpendicular magnetic head positioned at one end of the head unit relatively moves over the perpendicular recording medium, and wherein a yaw angle prevailing at an end track of the primary side on the perpendicular recording medium is substantially zero.
A disk drive comprising:
- a perpendicular recording medium on which concentric or spiral tracks are formed;
- means for overwriting a primary side track, which is either an inner track or an outer track on the perpendicular recording medium, onto part of a secondary side track, which is on the side away from the primary side track;
- and
- a head unit that turns on a central shaft, wherein a perpendicular magnetic head positioned at one end of the head unit relatively moves over the perpendicular recording medium, and wherein a yaw angle prevailing at the end track of the a primary side on the perpendicular recording medium is substantially zero.
Dependencies are inferred from the claim text.