Patent ID: 6424493
Filing Date: 2002-07-23
Classification: G11B

Abstract:
A magnetic head, comprising:a disk facing surface; a left side rail (140, 240) formed on the disk facing surface (100, 200) in a protruded manner; a right side rail (150, 250) formed on the disk facing surface (100, 200) in a protruded manner; a cross rail (110, 210) formed on the disk facing surface (100, 200) in a protruded manner and elongated continuously to both the left side rail (140, 240) and the right side rail (150, 250); a left air bearing surface (120, 220) formed on the disk facing surface (100, 200) in a protruded manner and formed only on a side of a leading edge (102, 202) continuously from the left side rail, the left air bearing surface (120, 220) having a continuous portion (124, 225) to the left side rail; a right air bearing surface (130, 230) formed on the disk facing surface (100, 200) in a protruded manner and formed only on a side of a leading edge (102, 202) continuously from the right side rail, the right air bearing surface (130, 230) having a continuous portion (134, 235) to the right side rail; wherein a recessed portion (190, 290) is constructed so as to be surrounded by the left side rail (140, 240), the left air bearing surface (120, 220), the cross rail (110, 210), the right air bearing surface (130, 230), and the right side rail (150, 250), and at least one part of the recessed portion produces negative pressure; and wherein one of the left side rail (140, 240) and the right side rail (150, 250) protrude beyond the recessed portion (190, 290), and protrude less than one of the left air bearing surface (120, 220) and the right air bearing surface (130, 230); and wherein a trailing edge of the magnetic head is formed from a first material that is different from a second material of the disk facing surface.