Magnetic head and magnetic disk device comprising the same
AssigneesKabushiki Kaisha Toshiba, Toshiba Electronic Devices & Storage Corporation
InventorKazuhiro Furutani
Life of this patent
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Abstract
According to one embodiment, a magnetic head includes a slider including an air bearing surface which includes a plurality of uppermost surfaces each constituting a pressure generating surface and a plurality of other surfaces different in height from the uppermost surfaces, an inflow end, and an outflow end, and a head portion provided at the outflow end. The air bearing surface includes a negative pressure generating groove, a leading pad having the uppermost surface, and a trailing pad having the uppermost surface. The uppermost surface in a region between a tip portion of the trailing pad and the outflow end includes only the trailing pad.
Claims10
A magnetic head comprising:
- a slider comprising an air bearing surface which includes a plurality of uppermost surfaces each constituting a pressure generating surface and a plurality of other surfaces different in height from the uppermost surfaces, an inflow end, and an outflow end spaced apart from the inflow end in a first direction;
- and
- a head portion provided at the outflow end of the slider to read and write data,
- the air bearing surface including a negative pressure generating groove formed at a central portion in the first direction and extending in a second direction orthogonal to the first direction, a leading pad provided in a region between the central portion and the inflow end and having the uppermost surface, a trailing pad provided adjacent to the outflow end in a region between the central portion and the outflow end and having the uppermost surface, and other uppermost surface provided in a region between a tip portion on the inflow end side of the trailing pad and the central portion,
- the uppermost surface in the region between the tip portion of the trailing pad and the outflow end including only the trailing pad, wherein
- the area of the uppermost surface provided in the region between the central portion of the air bearing surface and the inflow side end portion of the trailing pad is set at 3% or less of a total area of the uppermost surface provided in the whole region over a full length in the first direction of the air bearing surface.
A magnetic head comprising:
- a slider comprising an air bearing surface which includes a plurality of uppermost surfaces each constituting a pressure generating surface and a plurality of other surfaces different in height from the uppermost surfaces, an inflow end, and an outflow end spaced apart from the inflow end in a first direction;
- and
- a head portion provided at the outflow end of the slider to read and write data,
- the air bearing surface including a negative pressure generating groove formed at a central portion in the first direction and extending in a second direction orthogonal to the first direction, a leading pad provided in a region between the central portion and the inflow end and having the uppermost surface, a trailing pad provided adjacent to the outflow end in a region between the central portion and the outflow end and having the uppermost surface, and other uppermost surface provided in a region between a tip portion on the inflow end side of the trailing pad and the central portion,
- the uppermost surface in the region between the tip portion of the trailing pad and the outflow end including only the trailing pad, wherein
- the area of the uppermost surface provided in the region between the central portion of the air bearing surface and the inflow side end portion of the trailing pad is set at 60% or less of a total area of the uppermost surface provided in the region between the central portion of the air bearing surface and the outflow end.
Dependencies are inferred from the claim text.