Claims
- 1. A disc head slider comprising:
a slider body having a disc-facing surface and a leading surface adjacent to the disc facing surface, wherein the disc facing surface comprises leading-most edge and first and second side edges; a bearing surface formed on the disc facing surface; and a debris deflection surface formed along the leading surface, which is spaced vertically from the leading-most edge with respect to the disc facing surface and has a tangent that forms an angle with the bearing surface of less than ninety degrees.
- 2. The disc head slider of claim 1 wherein the debris deflection surface is formed by a recess within the leading surface, which is spaced from the leading-most edge and extends along a portion of the leading-most edge.
- 3. The disc head slider of claim 2 wherein the recess comprises an elongated groove which extends in a generally horizontal direction between the first and second side edges.
- 4. The disc head slider of claim 3 wherein the groove extends continuously from the first side edge to the second side edge.
- 5. The disc head slider of claim 3 wherein the groove comprises a plurality of groove segments which are spaced from one another in the horizontal direction.
- 6. The disc head slider of claim 2 wherein the recess has a cross-sectional shape, which is of the group consisting of curvilinear, rectilinear, triangular, circular, and rectangular.
- 7. The disc head slider of claim 2 wherein the recess is spaced from the leading-most edge by 2 microns to 30 microns.
- 8. The disc head slider of claim 2 wherein the recess is spaced from the leading-most edge by 4 microns to 8 microns.
- 9. The disc head slider of claim 2 wherein the recess has a depth measured from the leading surface of 3 microns to 25 microns.
- 10. The disc head slider of claim 2 wherein the recess has a depth measured from the leading surface that is 50 percent to 200 percent a width of the recess, which is measured in a direction along the leading surface, perpendicular to the leading-most edge.
- 11. The disc head slider of claim 2 wherein the recess has a constant spacing from the leading-most edge along an entire length of the recess.
- 12. The disc head slider of claim 11 wherein the disc facing surface comprises:
a raised, elongated bar extending along the leading-most edge.
- 13. The disc head slider of claim 12 wherein the disc facing surface further composes:
first and second raised, elongated rails extending in a longitudinal direction between the leading-most edge and a trailing edge of the disc facing surface; and a subambient pressure cavity positioned between the first and second raised rails and the bar, wherein the bar forms a cavity dam for the subambient pressure cavity and the first and second raised rails define the bearing surface.
- 14. The disc head slider of claim 1 wherein the debris deflection surface protrudes at an angle from the leading surface.
- 15. The disc head slider of claim 1 wherein the entire leading surface is oriented at an acute angle with the bearing surface and forms the debris deflection surface.
- 16. A disc head slider comprising:
a slider body having a disc-facing surface and a leading surface adjacent to the disc facing surface, wherein the disc facing surface comprises a leading-most edge, a trailing edge and first and second side edges; a bearing surface formed on the disc facing surface; and a debris collection recess formed in the leading surface, which is spaced from and extends along a portion of the leading-most edge.
- 17. A disc drive comprising:
a data storage disc having a recording surface which is rotatable about a central axis; and slider means supported relative to the recording surface for communicating with the recording surface through a slider-disc interface and for directing debris particles, which are encountered by the slider means within air flowing along the recording surface, away from the slider-disc interface in a non-downward vertical direction along a leading surface of the slider means.
- 18. A method of fabricating a disc head slider, wherein the method comprises:
(a) providing a slider body having a leading surface and a disc-facing surface, wherein the disc-facing surface has a leading-most edge extending along the leading surface; and (b) forming a debris-deflection surface on the leading surface, which is spaced vertically from and extends along a portion of the leading-most edge and is oriented to deflect debris encountered at the leading surface away from the disc-facing surface.
- 19. The method of claim 18 wherein step (b) comprises forming the debris-collection surface by removing material from the leading surface.
- 20. The method of claim 18 wherein step (b) comprises forming the debris-collection surface by adding material to the leading surface.
CROSS-REFERENCE TO RELATED APPLICATION
[0001] This application claims the benefit of U.S. Provisional Application No. 60/273,959, entitled “LEADING EDGE RECESS FOR COLLECTING CONTAMINANTS ON RECORDING HEADS,” filed Oct. 4, 2000.
Provisional Applications (1)
|
Number |
Date |
Country |
|
60237959 |
Oct 2000 |
US |