Method for manufacturing a magnetic disk device with...

Details Method for manufacturing a magnetic disk device with... Method for manufacturing a magnetic disk device with...

2005-09-15

2009-06-23

Paik, Sang Y (Department: 3742)

Electric heating

Metal heating

By arc

C360S245700

Reexamination Certificate

active

07550695

ABSTRACT:
Embodiments of the invention correct the static attitude of a head gimbal assembly (HGA) with high accuracy. In one embodiment, a vector group that constitutes the shortest path from the initial attitude of the HGA to the final anticipatory attitude is formed. The vector group is formed of the plural displacement vectors that give a variety of variations in static attitude when unit shots of laser light are performed on the HGA. Displacement vectors are synthesized while the displacement vectors each giving the anticipatory attitude closest to a target attitude are being selected in order from the initial attitude, toward the target attitude. Unit shots equivalent to the number of displacement vectors are performed on irradiating positions related to the displacement vectors included in the vector group. The static attitude existing after the unit shots is measured, then the displacement vectors are corrected, and a vector group constituting the new shortest path is formed. Highly accurate attitude correction is thus realized.

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patent: 2000-339894 (2000-12-01), None
patent: 2002-074630 (2002-03-01), None

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