Patent ID: 7550695
Filing Date: 2009-06-23
Classification: G11B,Y10T

Abstract:
1. A method of manufacturing a magnetic disk device which includes a magnetic disk, a head gimbal assembly with a mounted head/slider for accessing the magnetic disk, and a carriage rotatably supporting the head gimbal assembly, said method comprising: providing a plurality of displacement vectors equivalent to changes in static attitude of the head gimbal assembly that occur when a unit shot of laser light is performed on each of plural irradiating positions set for the head gimbal assembly; by forming a first vector group which constitutes a shortest path from an initial attitude of the head gimbal assembly to a first final anticipatory attitude present within permissible range of a target attitude thereof, performing a first calculation of a number of laser light shots with respect to irradiating positions related to the displacement vectors included in the first vector group; performing a first irradiation of conducting unit shots equivalent to the number of laser light shots calculated in said first calculation, with respect to the associated irradiating positions; if an after-shot attitude of the head gimbal assembly that was measured after said first irradiation does not fall within the permissible range of the target attitude, performing a displacement vector correction of correcting the displacement vectors included in the first vector group, on the basis of the after-shot attitude and the first final anticipatory attitude; by forming from at least the displacement vectors corrected in said first correction, a second vector group which constitutes the shortest path from the after-shot attitude to a second final anticipatory attitude present within the permissible range of the target attitude, performing a second calculation of a number of laser light shots with respect to irradiating positions related to the displacement vectors included in the second vector group; and performing a second irradiation of conducting, with respect to the associated irradiating positions, unit shots equivalent to the number of laser light shots calculated in said second calculation.