Patent ID: 8213111

Claim:
A hard disk drive, comprising: a base member; a disk which is a data storage medium to rotate at a high speed on the base member; and a head stack assembly (HSA) having a head slider including a magnetic head to write data on the disk or to reproduce data recorded on the disk, the magnetic head comprising: a reproducing unit to reproduce data; and a writing unit stacked on a side of the reproducing unit to write data, and when a straight line extending in a direction in which the reproducing unit and the writing unit are stacked is a head line, an ABS line is inclined with respect to the head line; and an ABS pattern formed on a disk facing surface of the head slider to generate a lifting force, and is rotatably mounted on the base member so that the head slider moves between inner circumferences and outer circumferences of the disk in a floating state over the disk, wherein when a center line of the ABS pattern is the ABS line and a straight line extending in a direction in which an air flow induced due to the high speed rotation of the disk enters the ABS pattern is an air flow line, a first crossing angle between the ABS line and the air flow line is reduced as the head slider moves from the outer circumferences to the inner circumferences, and wherein, when a straight line to connect a rotation center of the HSA and the magnetic head is an HSA line, the HSA line and the head line are parallel to each other and the ABS line is inclined with respect to the HSA line.