| 摘要 |
A slider of a head has a negative-pressure cavity formed in a facing surface, a leading step portion which protrudes from the facing surface and is situated on the upstream side of the negative-pressure cavity with respect to an air current, and a trailing portion which protrudes from the facing surface and is situated on the downstream side of the negative-pressure cavity. The trailing portion integrally has a base step portion, which has a given width in a first direction X, and a projection, which protrudes in the first direction from the base step portion toward the negative-pressure cavity. A proximal end of the projection on the base step portion side has a width smaller than that of the base step portion, and a length of the projection in the first direction accounting for about 18% or more of a length of the facing surface in the first direction.
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