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US 9,153,260 B1Granted
Electronic lapping guide in a magnetic recording transducer
AssigneeWestern Digital (Fremont), LLC
InventorsSteven C. Rudy, Matthew R. Gibbons, Curtis V. Macchioni, Yun-Fei Li, Changhe Shang, Carlos Corona
Life of this patent
Estimating the term…
Abstract
A slider includes a transducer including a magnetic structure having a front edge and a back edge. The slider further includes an electronic lapping guide (ELG) substantially coplanar with the magnetic structure and having a top edge and a bottom edge. The slider further includes a plurality of pads configured to calibrate a sheet resistance of the ELG and an offset of the ELG.
Claims9
A slider comprising:
- a transducer including a magnetic structure having a front edge and a back edge;
- an electronic lapping guide (ELG) substantially coplanar with the magnetic structure and having a top edge and a bottom edge;
- and
- a plurality of pads configured to calibrate a sheet resistance of the ELG and an offset of the ELG;
- a plurality of windage test stripes having a plurality of windage lengths in a direction perpendicular to the front edge of the magnetic structure, the plurality of windage test stripes being separate from any transducer including the transducer;
- wherein the plurality of pads is configured to be connected to a plurality of leads for the plurality of windage test stripes, the plurality of windage test stripes for determining the offset between the top edge of the ELG and the back edge of the magnetic structure.
3 more elements
A slider comprising:
- a transducer including a magnetic structure having a front edge and a back edge and a plurality of windage test stripes, the plurality of windage test stripes having a plurality of windage lengths in a direction perpendicular to the front edge of the magnetic structure, the plurality of windage test stripes being physically separated from the magnetic structure by a nonzero distance;
- an electronic lapping guide (ELG) substantially coplanar with the magnetic structure and having a top edge and a bottom edge,
- a plurality of pads configured to calibrate a sheet resistance of the ELG and an offset of the ELG;
- wherein the plurality of pads is configured to be connected to a plurality of leads for the plurality of windage test stripes, the plurality of windage test stripes for determining the offset between the top edge of the ELG and the back edge of the magnetic structure.
1 more element
Dependencies are inferred from the claim text.