NEGATIVE PRESSURE TYPE SLIDER FREE FROM TEMPERATURE CHANGE AFFECTING LEVITATION HEIGHT

摘要

A method of designing a negative pressure type slider for controlling a floating height of a magnetic head (slider) levitation over a magnetic disk independently of temperature change in a magnetic disk storage device. This method comprises appropriately regulating a ratio of the crown response of a levitation height to the camber response of the levitation height in a negative pressure type slider levitating at a predetermined height over the surface of a rotating magnetic disk while the slider face opposes the disk surface so that the change of the levitation height due to the crown change of the slider resulting from the temperature change and the change of the levitation height resulting from the crown change of the slider can be substantially offset from each other. To accomplish this technical concept on a practical slider surface (air bearing surface), a ratio of the area (R) of a reverse step surface to the area (C) of the center rail is regulated to be within the range of 2:1 to 6:1 (particularly, 4:1 to 6:1 and more particularly, 5:1), and the substantial center of the occurring negative pressure is regulated to coincide with the center of the slider surface.