A slider having a pair of rails with elongated surfaces which face the disk and are oriented generally along the direction of motion of the disk; a cavity, inset relative to the rail surfaces, is configured to produce subambient pressure tending to draw the slider toward the disk; at least one of the rail surfaces is interrupted by at least one detail configured to reduce the variation in roll for different yaw angles. In another aspect, a slider has at least one groove cut in at least one rail; the groove is oriented at an angle such that its leading end is nearer the inner end of the rail and its trailing end is nearer the outer end of the rail. Other aspects and features are disclosed.
A floating type head slider used in a disc drive using a disc-shaped recording medium, and adapted to float from the disc-shaped recording medium when the disc-shaped recording medium is rotationally operated. This head slider comprises an air lubricating surface formed on the surface opposite to the disc-shaped recording medium, a taper portion provided at the air inflow end side of the air lubricating surface, a recessed portion of a fixed depth adapted to produce negative pressure, the recessed portion being provided on the center line along the direction from the air inflow end side toward the air outflow end side of the air lubricating surface and being such that the air inflow end side is closed and the air outflow end side is opened, and a groove portion formed along the center line extending from the recessed portion toward the end portion of the air inflow end side of the air lubricating surface, and formed so as to have a width narrower than the recessed portion which divides the air lubricating surface and to have the same depth as that of the recessed portion. This head slider is floated with a fixed floating quantity from the surface of the disc-shaped recording medium in a stable state by positive pressure produced between the air lubricating surface and the surface of the rotationally operated disc-shaped recording medium and negative pressure produced by the recessed portion.
An air bearing magnetic head slider includes a slider body carrying a preselected write/read device thereon. A preselected air stream flows in the vicinity of one major surface of the slider body during operation. At least a pair of side rails are formed on the major surface of the slider body and extend along the air stream. A cross rail connects the air inlet ends of the side rails. The side rails each is formed with preselected grooves each of which is delimited by the bottom wall substantially parallel to the major surface of the slider body and side walls connecting the bottom wall and the surface of the side rail. The bottom wall and each side wall are inclined by an angle of less than 90 degrees relative to each other.
Protruding portions are formed on outflow ends of slider rails on a floating magnetic head slider. This floating magnetic head slider is of rails type. Each of the protruding portion extends farther to the outside as it approaches the outflow end. Or the external sides of the rails on the magnetic head slider are so arranged that angles formed thereat diverge from the side of the inflow end to the side of the outflow end, and a pressure adjusting aperture is formed on the outflow side of each of the rails. Because of the above arrangement, it is possible to provide a magnetic head unit in which particles, such as dust, adhering to the disk surface are effectively removed, and in which floating stability is not impaired. Removing the particles on the disk surface is not limited by seeking directions even while the magnetic disk unit is in operation.
An air bearing slider for use in a disk drive. The slider includes a leading side and an opposing trailing side. The slider further includes a pair of leading side air bearing surfaces disposed adjacent the leading side. Each of the leading side air bearing surfaces includes a main portion and a trailing portion extending from the main portion toward the trailing side. The slider further includes a pair of side rails. Each of the side rails is disposed between a respective one of the leading side air bearing surfaces and the trailing side. Each of the side rails includes a side rail air bearing surface disposed toward the trailing side and a side rail shallow recessed surface extending away from the side rail air bearing surface toward the respective main portion and laterally along the respective trailing portion in spaced relation to the respective trailing portion.
An air bearing slider for use in carrying a transducer adjacent a recording medium exhibits reduced sensitivity to variations in roll, crown, and skew. In one embodiment, the slider comprises an air bearing slider having a pair of substantially coplanar side rails disposed along the sides of the air bearing surface so as to form a recessed section between the side rails. The recessed section is open at both the leading and trailing ends of the slider while each side rail has a tapered section or etched step at the leading edge of the slider. One rail carries the transducer and extends for the entire length of the slider body. The rail without a transducer extends from the leading edge toward the trailing edge, but does not extend all the way to the trailing edge. Under some skew, accessing, and crash stop impact conditions, the resulting slider roll causes the flying height of the inactive rail to drop. By proper selection of the length and width of the inactive rail, the roll is biased such that the fly height of the inactive rail remains higher than that of the active rail even under worst case conditions. Therefore, minimum slider to disk spacing is larger than it would be for a slider design in which all rails extend the entire length of the slider.
