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US 6,674,612 B2Granted
Magnetic transducing slider with leading edge crossbar
AssigneeSeagate Technology LLC
InventorsZine-Eddine Boutaghou, Anthony P. Sannino
Life of this patent
Estimating the term…
Abstract
A magnetic data transducing head slider is provided with a transversely extended crossbar or other barrier near the leading edge. The barrier is deposited onto the air bearing surface of the slider using photolithographic techniques that enable precise determination of the barrier dimensions and the barrier set-back from the leading edge. The barrier set-back, width and thickness can be selected to control the transducer flying height and the pitch of the slider relative to the data recording surface of a magnetic disk when the slider is aerodynamically supported relative to the disk. The barrier also acts as a shield to minimize particulate contamination.
Claims52
A magnetic data transducing head slider, including:
- a slider body having a substantially planar air bearing surface with a leading edge, and a trailing edge opposite and spaced longitudinally from the leading edge;
- a barrier formed over the air bearing surface, disposed proximate and spaced longitudinally from the leading edge, extending generally transversely along the air bearing surface, and protruding outwardly from the air bearing surface by a barrier height;
- and
- a magnetic data transducer mounted to the slider body;
- wherein the barrier is adapted to provide pressurization proximate the leading edge sufficient to aerodynamically lift and support the slider body in a data transducing position in spaced apart relation to a magnetic data recording medium when the recording medium is moving relative to the slider body in a selected direction such that an air flow generated by the moving medium encounters the slider body first at the leading edge.
2 more elements
A magnetic data transducing device, including:
- a slider body having a substantially planar surface with a leading edge and a trailing edge opposite the leading edge, adapted to be supported with respect to a magnetic data recording medium in a data transducing position with the planar slider surface inclined relative to a substantially planar recording surface of the recording medium, with the leading edge spaced apart from the recording surface by a first distance and with the trailing edge spaced apart from the recording surface by a second distance less than the first distance;
- and
- a magnetic data transducer mounted to the slider body;
- wherein the improvement comprises a shield fixed to the slider body along the planar slider surface, disposed between the leading edge and the transducer, and protruding outwardly from the planar slider surface, said shield thereby extending toward the recording surface to a selected spacing from the recording surface when the slider body is in the data transducing position, the selected spacing being less than said first distance whereby the shield is positioned to encounter particles traveling between the leading edge and recording surface and toward the trailing edge, to substantially prevent the particles from traveling further toward the trailing edge, said shield comprising a plurality of features protruding outwardly from the planar slider surface, with adjacent features being space apart from one another by distances less than the selected spacing.
1 more element
A magnetic data transducing device, including:
- a slider body having a substantially planar surface with a leading edge and a trailing edge opposite the leading edge, adapted to be supported with respect to a magnetic data recording medium in a data transducing position with the planar slider surface inclined relative to a substantially planar recording surface of the recording medium, with the leading edge spaced apart from the recording surface by a first distance and with the trailing edge spaced apart from the recording surface by a second distance less than the first distance;
- a magnetic data transducer mounted to the slider body;
- and
- an aerodynamic lift structure integral with the slider body and adapted to provide a leading edge pressurization between the slider body and the recording medium near the leading edge when the recording medium is moving relative to the slider body in a longitudinal direction, said pressurization being sufficient to provide an aerodynamic lift and support of the slider body in the data transducing position;
- wherein the aerodynamic lift structure consists essentially of a shield fixed to the slider body along the planar slider surface in longitudinally spaced apart relation to the leading edge, elongate a transverse direction, disposed between the leading edge and the transducer, and protruding outwardly from the planar slider surface, said shield thereby extending toward the recording surface to a selected spacing from the recording surface when the slider body is in the data transducing position, the selected spacing being less than said first distance whereby the shield is positioned to encounter particles between the leading edge and recording surface traveling toward the trailing edge, to substantially prevent the particles from traveling further toward the trailing edge.
2 more elements
Dependencies are inferred from the claim text.