Patent ID: 7929250

Claim:
A head slider to float on a disk that is a data recording medium to record and/or read data, the head slider comprising: an air bearing surface protruding from a disk facing surface of the head slider toward the disk, the air bearing surface comprising a first air bearing surface portion that is disposed closer to a leading edge of the disk facing surface of the head slider than to a trailing edge of the disk facing surface in a first direction of the disk facing surface, a pair of second air bearing surface portions extending from the leading edge toward the trailing edge on a center portion of the disk facing surface, and a third air bearing surface portion formed on the center portion of the disk facing surface closer to the trailing edge than to the leading edge; a shallow recess retreated behind the air bearing surface, the shallow recess comprising a first shallow recess portion formed around the first air bearing surface portion, and a second shallow recess portion formed adjacent to the pair of second air bearing surface portions; and a cavity recess retreated behind the air bearing surface and the shallow recess and formed on a portion the disk facing surface where the air bearing surface and the shallow recess are not formed, wherein one of the second air bearing surface portions faces air flowing between a surface of the disk and the disk facing surface of the head slider when the head slider is located at an inner disk position earlier than the other of the second air bearing surface portions, and is closer to a vertical center line of the disk facing surface extending from the leading edge to the trailing edge than the other of the second air bearing surface portions.