Back to results
US 7,608,193 B2Granted
Perpendicular magnetic discrete track recording disk
AssigneeWD Media, LLC
InventorsDavid E. Wachenschwanz, Gerardo A. Bertero, David Treves, Andrew Homola, James L. Chao, Christopher H. Bajorek
Life of this patent
Estimating the term…
Abstract
A method of forming a discrete track recording pattern on a soft magnetic underlayer of a perpendicular magnetic recording disk. In one embodiment, the soft magnetic underlayer is continuous throughout the discrete track recording pattern.
Claims10
A method of fabricating a magnetic recording disk, comprising:
- disposing a radially continuous soft magnetic underlayer above a disk substrate;
- physically texturing the radially continuous soft magnetic underlayer;
- and
- forming a discrete track recording pattern on the radially continuous soft magnetic underlayer after the disposing of the radially continuous soft magnetic underlayer, wherein the discrete track pattern comprises a plurality of tracks and wherein the soft magnetic underlayer is retained continuously throughout the plurality of tracks.
1 more element
A method of fabricating a magnetic recording disk, comprising:
- disposing a radially continuous soft magnetic underlayer above a disk substrate;
- polishing the continuous soft magnetic underlayer;
- and
- forming a discrete track recording pattern on the soft magnetic underlayer, wherein the discrete track pattern comprises a plurality of tracks and wherein the soft magnetic underlayer is retained continuously throughout the plurality of tracks.
1 more element
Dependencies are inferred from the claim text.