Patent ID: 6680820
Filing Date: 2004-01-20
Classification: G11B

Abstract:
A method of maintaining a flying height of a magnetic head on a magnetic disk of circular shape with a diameter of 2.5 inches or shorter and no hole at the center thereof substantially constant irrespective of a change of a skew angle comprising the steps of:rotating the magnetic disk; providing a negative pressure type slider with flying planes on a side thereof opposing the magnetic disk, with a thickness from each of the flying planes to an opposite surface on a reverse side thereof in a range of 0.30 to 0.65 mm, with a length in a first direction of air discharge thereof in a range of 1.2 to 2.8 mm, and with a width in a second direction orthogonal to the first direction in a range of 1.0 to 2.3 mm, said slider being further provided free of any transverse pressurization contours, slider rolling compensation grooving, or other slider rolling compensation elements on any portion thereof; attaching a magnetic head at the air discharge end of the slider, said attached magnetic head including reading/writing elements arranged on a first side and an opposite second side of the air discharge end of the slider; providing a head supporting device configured to support the slider and attached magnetic head at a first end thereof by attachment to a middle position of the slider in a maimer that does not deviate a center of motion of the slider and does not provide rolling compensation relative to the slider and attached magnetic head; providing a positioning device configured to support a second end of said head supporting device opposite to said first end at a pivot point in a manner that does not provide rolling compensation relative to the slider and attached magnetic head; rotating the magnetic disk; and pivoting the first end of the head supporting device relative to the second end thereof supported by the positioning device at said pivot point to thereby move said slider with the attached magnetic head at the first end thereof above said rotating magnetic disk with the first side of the air discharge end of the slider being oriented in a direction toward the center of the magnetic disk while the opposite second side is oriented in a direction toward the outer periphery of the magnetic disk, said slider movement relative to the rotating magnetic disc being along an arcuate path that establishes a different skew angle between a longitudinal direction of the slider and a tangent of said magnetic disk relative to different radial magnetic disk locations; wherein the reading/writing element arranged on the first side of the air discharge end of the slider undergoes a first amount of separation from the rotating magnetic disk and the reading/writing element arranged on the opposite second side of the air discharge end of the slider undergoes a second amount of separation from the rotating magnetic disk that is greater than said first amount of separation due to the slider rolling when said slider with the attached magnetic head is moved above said magnetic disk to said different radial locations associated with different skew angles, with the difference between the second amount of separation and the first amount of separation determining the flying height of the slider and attached magnetic head above the magnetic disk, said flying height not changing more than 0.02 &mgr;m, when the flying height is set to be 0.1 &mgr;m and the skew angle is changed in a range of âˆ’20 to 20 degrees without providing slider rolling compensation relative to the slider and attached magnetic head or any of the structure moving or supporting the slider and attached magnetic head.