Multi step lube blocking air bearing area configuration
View Patent ↗A disk drive is provided having one or more structural air bearing surface (ABS) features that can block particulate matter, such as lube droplets that may enter the air bearing from the trailing edge or rearward portion of the slider. Moreover, such structural ABS features can influence air flow within or about the air bearing to prevent or at least reduce the accumulation of particles and/or droplets in one or more areas of the air bearing to reduce the reliability problems induced by particle contamination and lube pick-up.
1. A slider, comprising:
a leading edge and a trailing edge;
a transducer proximate to the trailing edge for performing read and write operations on a recording medium;
a cavity configured between the leading edge and the trailing edge;
a blocking structure proximate and parallel to the trailing edge configured to block contaminating lubrication matter from the trailing edge; and
a first ledge positioned proximate and parallel to the blocking structure between the cavity and the blocking structure.
2. The slider of claim 1 , wherein the slider is one of a pemto type slider or a femto type slider.
3. The slider of claim 1 , wherein the blocking structure has a first height relative to an air bearing surface of the slider.
4. The slider of claim 3 , wherein the first height is approximately 0.2 μm.
5. The slider of claim 3 , wherein the first ledge has a second height lower than the first height of the blocking structure relative to the air bearing surface of the slider.
6. The slider of claim 5 , wherein the second height is approximately 0.55 μm.
7. The slider of claim 5 , wherein the cavity has a third height lower than second height of the first ledge relative to the air bearing surface of the slider.
8. The slider of claim 7 , wherein the third height comprises a range between approximately 1 μm to 1.5 μm.
9. The slider of claim 8 , further comprising a second ledge positioned proximate to the first ledge between the cavity and the first ledge.
10. The slider of claim 9 , wherein the second ledge has a fourth height of approximately 1.0 μm relative to the air bearing surface of the slider.
11. The slider of claim 1 , further comprising at least two additional ledges configured to create a stepped configuration between the cavity and the blocking structure.
12. The slider of claim 11 , wherein one of the at least two additional ledges is further than another one of the at least two additional ledges from an air bearing surface of the slider, and wherein both of the at least two additional ledges are further from the air bearing surface of the slider than the first ledge.
13. The slider of claim 12 , wherein the cavity is 1.5 μm from the air bearing surface of the slider, the blocking structure is 0.2 μm from the air bearing surface of the slider, the first ledge is 0.5 μm from the air bearing surface, the one of the at least two additional ledges is 0.8 μm above the air bearing surface, and the other of the at least two additional ledges is 1.15 μm above the air bearing surface.
14. A disk drive, comprising:
a rotatable recording medium;
a longitudinal slider having a leading edge and a trailing edge, a bottom surface of the longitudinal slider proximate to the rotatable recording medium defining an air bearing surface;
a transducer proximate to the trailing edge for performing read and write operations on the rotatable recording medium;
a cavity disposed between the leading edge and the trailing edge;
a lubricant blocking structure disposed proximate and parallel to the trailing edge between the cavity and the trailing edge; and
a first ledge disposed between the cavity and the lubricant blocking structure configured to promote air flow through the cavity, preventing lubricant material collection within the cavity.
15. The disk drive of claim 14 , wherein the cavity is between approximately 1.0 μm and 1.5 μm from the air bearing surface.
16. The disk drive of claim 15 , wherein the lubricant blocking structure is approximately 0.2 μm from the air bearing surface.
17. The disk drive of claim 16 , further comprising a second ledge disposed between the first ledge and the cavity.
18. The disk drive of claim 17 , further comprising a third ledge disposed between the second ledge and the cavity.
19. The disk drive of claim 18 , wherein the first ledge is approximately 0.5 μm from the air bearing surface, the second ledge is approximately 0.8 μm from the air bearing surface, and the third ledge is approximately 1.15 μm from the air bearing surface.
20. The disk drive of claim 16 , wherein the first ledge is approximately 0.55 μm from the air bearing surface, and wherein the second ledge is approximately 1.0 μm from the air bearing surface.