Method for controlling twist curvature of a disc head slider
AssigneeSeagate Technology LLC
InventorsMohamed-Salah H. Khlif, Richard A. Strom
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Abstract
An apparatus and method for controlling twist curvature of a disc head slider is provided, where the slider has a bearing surface, a back surface, which is opposite to the bearing surface, a longitudinal axis and a transverse axis. The apparatus obtains a measure of the twist curvature of the bearing surface and selectively alters material stresses in a working surface of the slider. The material stresses are altered asymmetrically with respect to the longitudinal axis and the transverse axis based on the measure of the twist curvature to induce a change in the twist curvature.
Claims29
A method of controlling twist curvature of a disc head slider having a bearing surface, a back surface, which is opposite to the bearing surface, a longitudinal axis and a transverse axis, the method comprising:
- (a) obtaining a measure of the twist curvature of the bearing surface;
- and
- (b) selectively altering material stresses in a working surface of the slider asymmetrically with respect to the longitudinal axis and the transverse axis based on the measure of the twist curvature obtained in step (a) to induce a change in the twist curvature, wherein the working surface comprises the back surface or the bearing surface.
A method of controlling twist curvature of a disc head slider having a plurality of surfaces, including a bearing surface, the method comprising:
- (a) selecting one of the plurality of surfaces as a working surface;
- and
- (b) selectively altering material stresses in the working surface asymmetrically on the working surface to induce a change in the twist curvature of the bearing surface.
Dependencies are inferred from the claim text.