Patent ID: 8638528
Filing Date: 2014-01-28
Classification: G11B

Abstract:
1. A head slider for a magnetic disk drive, said slider comprising a leading edge and a trailing edge of an air bearing surface, said head slider further comprising: a first etch depth formed on said air bearing surface of said head slider, wherein said first etch depth is near a leading edge and a perimeter of said first etch depth is separated from said leading edge; and a second etch depth formed on said air bearing surface of said head slider wherein said first etch depth is deeper than said second etch depth, wherein said second etch depth extends from said trailing edge, and wherein said first etch depth is adjacent said second etch depth along a centerline of said head slider, wherein said first etch depth is from said air bearing surface and said second etch depth is from said air bearing surface, wherein said centerline divides said head slider into a leading side of said air bearing surface and a trailing side of said air bearing surface and wherein said second etch depth is completely on said trailing side of said air bearing surface and wherein said first etch depth is completely on said leading side of said air bearing surface.