Abstract: In certain embodiments, a slider includes an air bearing surface having a cavity. The cavity includes transition features at an upstream side of the cavity to mitigate air flow expansion along the cavity. Turbulence-inducing features are positioned on the transition features.

Abstract: A slider includes a leading edge, a trailing edge, a transducer adjacent to the trailing edge, and an air bearing surface. The air bearing surface includes a forward pad, a rearward pad, and a center rail pad feature disposed along a longitudinal axis of the slider. The center rail pad feature includes a first shallow recess finger and a second shallow recess finger diverging from the longitudinal axis toward the trailing edge.

Abstract: Disclosed are a slider for a memory device and a hard memory device having the same. The slider for a memory device includes a slider body configured to fly over the surface of a medium at a particular height; and a reverse flow preventing unit disposed at part of the slider body adjacent to a trailing edge of the slider body and configured to prevent a reverse flow of air between the medium and the slider body.

Abstract: Embodiments of the present invention provide a slider that may suppress contamination from being attached to the flying surface of the slider without influence on reduction of the flying height of the slider. Ions exerting an effect of decreasing surface energy are implanted in the whole surface of a flying surface of a magnetic head slider except for a front rail surface and a center rail surface. According to this, contamination is prevented from being attached to a front step bearing surface, a side step bearing surface, a center step bearing surface and a negative pressure groove where contamination is particularly liable to be attached in the flying surface of the magnetic head slider, so as to suppress destabilization in flying of the slider.

Abstract: According to one embodiment, a head includes a head slider including a bearing surface and configured to fly by an airflow between the recording medium surface and the bearing surface, and a recording element and a reproduction element arranged in an outflow end portion of the head slider with respect to the airflow. The bearing surface includes a first pressure generating portion on an inflow end portion of the head slider with respect to the airflow, configured to generate a pressure, a second pressure generating portion on the outflow end portion, configured to generate a pressure, and a third pressure generating portion between the first and second pressure generating portions at a transverse central part of the bearing surface, configured to generate a pressure higher than that generated by the first pressure generating portion and lower than that generated by the second pressure generating portion.

Abstract: A slider resistant to lubricant accumulation. The slider resistant to lubricant accumulation includes a positive-air-pressure portion of the slider configured to levitate the slider above a magnetic-recording disk and a negative-air-pressure portion of the slider configured to bring the slider into proximity with the magnetic-recording disk at a fly height sufficient for writing data to and reading data from the magnetic-recording disk. The slider resistant to lubricant accumulation also includes a lubricant-accumulation barrier disposed in proximity to a trailing edge of the slider. The lubricant-accumulation barrier is configured to reduce lubricant accumulation on the slider. The lubricant-accumulation barrier also includes a plurality of lubricant-accumulation-barrier portions disposed at a plurality of respective depths below an outer-most surface of a disk-facing side of the slider.

Abstract: A hard disk drive has a disk, a spindle motor for rotating the disk, a head stack assembly including a swing arm and a head slider disposed at a leading end of the swing arm, and a controller operatively connected to the head slider. The head slider is positioned by the swing arm over the disk and floats in such position during a read/write operation in which data is being read from or written onto the disk. The head slider has a head slider body, a magnetic head embedded in the body, and at least one resistive heating element that generates heat when current is supplied thereto. The heat causes the body of the head slider to thermally expand in such a way that the profile of the disk-facing side of the body of the head slider changes. The controller controls the height of the head slider relative to the disk by controlling the supplying of current to the resistive heating element(s).

Abstract: A slider resistant to lubricant accumulation. The slider resistant to lubricant accumulation includes a positive-air-pressure portion of the slider configured to levitate the slider above a magnetic-recording disk and a negative-air-pressure portion of the slider configured to bring the slider into proximity with the magnetic-recording disk at a fly height sufficient for writing data to and reading data from the magnetic-recording disk. The slider resistant to lubricant accumulation also includes a lubricant-accumulation barrier disposed in proximity to a trailing edge of the slider. The lubricant-accumulation barrier is configured to reduce lubricant accumulation on the slider.

Abstract: Embodiments of the present invention provide a head slider that suppresses accumulation of lubricant droplets on an air-bearing surface due to a backflow, and thus improves reliability of a disk drive. According to one embodiment, a lubricant droplet being adhered to a head slider and accumulated thereon, which are caused by extremely low flying height of the head slider, are prevented from falling onto a recording medium. When velocity of a recording medium at a position where the head slider faces the recording medium is assumed to be v, step depth ?4 at an outflow side of an outflow side rail satisfies, ?4?0.1125*log10(v)+0.019.

Abstract: A slider assembly for supporting a recording element in operative relation to a flexible moving recording medium is disclosed. The slider may have a face including air bearing surfaces positioned toward the recording medium. A recording element may be in an air bearing surface near the trailing edge of the face, wherein there is no other slider or other supporting surface on an opposite side of the recording medium. A vacuum cavity may be formed in the face for creation of sub-ambient pressure to attract the slider toward the recording medium. An air bearing surface may be provided with a transverse pressure contour (TPC) along at least one of its edges for providing flying height control, with the TPC having a step geometry. A mounting device may mount the slider in a biased manner toward the recording medium and urge the slider toward the recording medium.

Abstract: An air bearing surface, with multiple deflection rails in a negative pressure pocket, between a leading air bearing surface and a central island for the read-write head. A gap separates left and right deflection rails. During the slider's normal operation, incoming particles may collide with at least one of the deflection rails and deflect away from the central island and the read-write head. The gap supports diminishing additional negative pressure in the negative air pressure pocket. The gap may minimize the accumulation of debris behind the rejection rails. The invention includes head gimbal assemblies containing these sliders, actuator arms coupled to the head gimbal assemblies, actuator assemblies including at least one of the actuator arms, and hard disk drives which include the actuator assemblies. The invention also includes methods for making sliders, actuator arms, actuator assemblies, and hard disk drives, as well as the products of these manufacturing methods.

Abstract: According to one embodiment, a slider of a magnetic head is provided with a negative-pressure cavity formed in a facing surface, a leading step portion situated on the upstream side of the negative-pressure cavity, a pair of side portions opposed to each other, a trailing step portion situated on the outlet end side of the negative-pressure cavity, and a pair of embossed portions formed on the facing surface so as to project from the negative-pressure cavity and provided on the outlet side of the negative-pressure cavity with respect to an airflow. The embossed portions individually extend along a second direction so as to be situated individually on the opposite sides of the trailing step portion and are formed so as to be lower than the trailing step portion with respect to the negative-pressure cavity and flush with an outlet-side end surface of the slider.

Abstract: An air-bearing surface of a hard disk drive slider comprises a trailing edge wherein a magnetic transducer is coupled to the air-bearing surface. A leading edge is opposite from the trailing edge. A channel is coupled to the air-bearing surface wherein the channel comprises: a closure at a distal end proximal to the leading edge; a bottom surface; and a center of the channel approximately aligned colinear with a center of the magnetic transducer. In this configuration the channel generates significantly more negative pressure proximal to the leading edge thereby stiffening the air bearing during operation.

Abstract: A magnetic head slider comprising: an air inflow end; an air bearing surface; and an air outflow end, the air bearing surface comprising: an inflow side rail face further formed towards the air inflow end than the center of the air bearing surface; an outflow side rail face formed further towards the air outflow end than the inflow side rail face, having a magnetic recording/reproduction element arranged thereon; a negative pressure groove face formed between the inflow side rail face and the outflow side rail face; and a groove face formed between the inflow side rail face and the negative pressure groove face, or between the inflow side rail face and the outflow side rail face; and comprising at least one step structure shallower than the groove face at the slider end in the width direction of the groove face.

Abstract: A method for assembling an actuator assembly includes providing a first housing portion and a second housing portion; providing a coil, a pole piece, a magnet, and a completed beam; positioning the coil, pole piece, magnet, and completed beam between the housing portions; and coupling the housing portions together.

Abstract: In one embodiment of the present invention, a method of producing a magnetic head slider comprises the steps of forming, on the air bearing surface of the slider, an air bearing surface overcoat, removing the surface region from a hard amorphous carbon film by the irradiation with an ion beam which is tilted with respect to a normal to the air bearing surface, and forming a rail in the air bearing surface on which the air bearing surface overcoat has been formed. A high density and covering performance are obtained when the angle of irradiating the ion beam is not smaller than about 60 degrees from a normal to the air bearing surface of the magnetic head slider and when the acceleration voltage for the ion beam is not higher than about 300 V in the step of removing part of the air bearing surface overcoat.

Abstract: According to an embodiment, a slider of a head is provided with a negative-pressure cavity 54 formed in a disk-facing surface, a leading step portion located on the upstream side of the negative-pressure cavity, a pair of side portions opposed to each other, a head mounting pad provided on the facing surface on an outflow side of the negative-pressure cavity with respect to an airflow and provided with a head portion, a positive-pressure generating pad which is arranged on the facing surface between a leading pad and the head mounting pad and configured to produce a positive pressure, and a pair of center skirts which are disposed on the outflow side of the positive-pressure generating pad and are shallower than the negative-pressure cavity.

Abstract: A slider resistant to lubricant accumulation. The slider resistant to lubricant accumulation includes a positive-air-pressure portion of the slider configured to levitate the slider above a magnetic-recording disk and a negative-air-pressure portion of the slider configured to bring the slider into proximity with the magnetic-recording disk at a fly height sufficient for writing data to and reading data from the magnetic-recording disk. The slider resistant to lubricant accumulation also includes a lubricant-accumulation barrier disposed in proximity to a trailing edge of the slider. The lubricant-accumulation barrier is configured to reduce lubricant accumulation on the slider.

Abstract: A slider having an improved atmospheric pressure variation characteristic can be provided by ensuring the desired amount of inflow of air flowing to the air bearing surface in a region where it is difficult to ensure the desired air inflow amount, e.g., a region where the slider/disk relative speed is low or a region where the area of the air bearing surface is small by forming a groove configuration surface in a specified shape. In the negative pressure utilization type slider, a groove configuration surface lower in height than an air in flow surface is formed between the disk inner peripheral end and the disk outer peripheral end of the air inflow surface in the air flow incoming end side of a pressure generating surface, separately from a negative pressure generating surface.

Abstract: A head for use in a magnetic hard disk drive or other information storage device includes a novel ABS. The novel ABS includes an inter-cavity dam that is disposed between at least a portion of a cavity and a trailing pad. The inter-cavity dam is spaced longitudinally from the trailing pad by at least one thirtieth of the slider length. The inter-cavity dam includes an OD dam surface and an ID dam surface, with a slider-bisecting longitudinal plane passing between a majority of the OD dam surface and a majority of the ID dam surface. The OD dam surface is recessed from the first plane by an OD dam recession, and the ID dam surface is recessed from the first plane by an ID dam recession that is not equal to the OD dam recession.

Abstract: A head apparatus includes a head that records information into and reproduces the information from a disc, a slider that supports the head, and flies above a surface of the disc when the disc rotates, the slider having a medium opposing surface that opposes to the disc, a positive pressure part that is formed on the medium opposing surface of the slider, generates a lifting power used to float the slider in cooperation with an airflow formed as the disc rotates, and defines a pitch angle of the slider, and a negative pressure part that is formed on the medium opposing surface of the slider, and decreases a flying height of the slider in cooperation with the airflow, wherein (E/L)×100?6 is met, where L is a length of the medium opposing surface along a direction from an inflow end to an outflow end of the airflow, and E is the shortest distance between the positive pressure part and the negative pressure part along the direction from the inflow end to the outflow.

Abstract: According to one embodiment, a slider of a magnetic head is provided with a negative-pressure cavity formed in a facing surface, a leading step portion situated on the upstream side of the negative-pressure cavity, a pair of side portions opposed to each other, a trailing step portion situated on the outlet end side of the negative-pressure cavity, and a pair of embossed portions formed on the facing surface so as to project from the negative-pressure cavity and provided on the outlet side of the negative-pressure cavity with respect to an airflow. The embossed portions individually extend along a second direction so as to be situated individually on the opposite sides of the trailing step portion and are formed so as to be lower than the trailing step portion with respect to the negative-pressure cavity and flush with an outlet-side end surface of the slider.

Abstract: Embodiments of the present invention provide a head slider that suppresses accumulation of lubricant droplets on an air-bearing surface due to a backflow, and thus improves reliability of a disk drive. According to one embodiment, a lubricant droplet being adhered to a head slider and accumulated thereon, which are caused by extremely low flying height of the head slider, are prevented from falling onto a recording medium. When velocity of a recording medium at a position where the head slider faces the recording medium is assumed to be v, step depth ?4 at an outflow side of an outflow side rail satisfies, ?4?0.1125*log10(v)+0.019.

Abstract: Apparatus and methods are disclosed that regulate head fly height so as to compensate for variation in height of a disk surface. An exemplary apparatus includes a circuit that detects disk height variation in response to variation in the gain of a variable gain amplifier, within an automatic gain control loop, that amplifies a read signal as the head reads from the disk surface. The circuit regulates the head fly height so as to compensate for the detected variation in disk height.

Abstract: The present invention relates to a head slider used for a magnetic storage device. In accordance with an aspect of the present invention, a head slider having an air bearing surface comprising, a heater element disposed at the air bearing surface, and at least one groove formed in an end surface at a trailing edge side of the head slider so as to extend toward a rear surface.

Abstract: An information handling system, such as a disc drive, including a base, a disc stack rotatably attached to the base, and an actuator assembly movably attached to the base. The actuator assembly also includes a load spring and a slider attached to said load spring. The slider has an air-bearing surface. The air-bearing surface includes a first rail, a second rail and a depression positioned between the first rail and the second rail of the air-bearing surface. The depression further includes a first level surface and a second level surface. The first level surface of the slider is at a different distance from a surface of the first rail of the slider than the second level surface of the slider. The air-bearing surface may also include a divider located between the first level surface of the slider and the second level surface of the slider.

Abstract: An air-bearing surface of a hard disk drive slider comprises a trailing edge wherein a magnetic transducer is coupled to the air-bearing surface. A leading edge is opposite from the trailing edge. A channel is coupled to the air-bearing surface wherein the channel comprises: a closure at a distal end proximal to the leading edge; a bottom surface; and a center of the channel approximately aligned colinear with a center of the magnetic transducer. In this configuration the channel generates significantly more negative pressure proximal to the leading edge thereby stiffening the air bearing during operation.

Abstract: An air bearing slider for a disk drive, which has a read/write head mounted thereon and is lifted from a surface of a disk due to a lifting force generated by the rotation of the disk, and a suspension assembly including the air bearing slider, the air bearing slide includes: a slider body, which has a disk facing surface facing the surface of the disk and a rear surface opposite to the disk facing surface; a positive pressure forming rail part, which protrudes from the disk facing surface of the slider body and generates a positive pressure for lifting the slider body from the surface of the disk; and an air ventilator, which passes obliquely through the slider body from the disk facing surface to the rear surface in an air flow direction and discharges air introduced between the disk and the slider body and particles contained in the air.

Abstract: According to one embodiment, a head of a disk device has a slider and a head portion disposed on the slider. The slider has a facing surface opposed to a surface of a rotatable recording medium and is flown by an airflow. The facing surface of the slider has a first direction extending in a direction of the airflow and a second direction perpendicular to the first direction. The slider includes a negative-pressure cavity, a leading step portion, a leading pad which protrudes from the leading step portion, a recess which is formed in that part of the leading step portion which is situated on an upstream side of the leading pad with respect to the airflow and defines a first step portion and a second step portion which individually extend in a direction across the first direction and are spaced in the first direction, a trailing step portion.

Abstract: A front rail is defined on the bottom surface at a position near the inflow end of the slider body. A front air bearing surface is defined on the top surface of the front rail. A rear rail defined on the bottom surface at a position near the outflow end of the slider body. A rear air bearing surface is defined on the top surface of the rear rail. A head element is embedded in the rear rail. A recess is formed at the outflow end of the front air bearing surface. The recess enables a fine adjustment of the flying height, the pitch angle and the roll angle of the head slider.

Abstract: A system and method are disclosed for a subambient pressure air bearing slider utilizing negative pressure grooves. In one embodiment, a groove extends from a slider's leading edge, splits, and terminates in two locations at the slider's trailing edge. In one embodiment, a groove is provided in a slider's compression pad near the trailing edge of the slider.

Abstract: An air bearing surface, with multiple deflection rails in a negative pressure pocket, between a leading air bearing surface and a central island for the read-write head. A gap separates left and right deflection rails. During the slider's normal operation, incoming particles may collide with at least one of the deflection rails and deflect away from the central island and the read-write head. The gap supports diminishing additional negative pressure in the negative air pressure pocket. The gap may minimize the accumulation of debris behind the rejection rails. The invention includes head gimbal assemblies containing these sliders, actuator arms coupled to the head gimbal assemblies, actuator assemblies including at least one of the actuator arms, and hard disk drives whish include the actuator assemblies. The invention also includes methods for making sliders, actuator arms, actuator assemblies, and hard disk drives, as well as the products of these manufacturing methods.

Abstract: A head slider is designed to prevent collision against a surface of a disk due to an external impact and the like while a device is in use to avoid damages on an air bearing surface (“ABS”) of the head slider and the surface the disk. This is achieved by a structure of the head slider which produces a large positive pressure on a positive dynamic pressure generating section when the head slider comes close to the disk. More specifically, the ABS of the head slider comprises three surfaces of different positional heights, and the positive dynamic pressure generating section having a height equivalent to a mid level surface of the second highest position is provided on a portion of the head slider made of a material of high brittleness at each of locations near both side edges lateral to a tracking width of a magnetic head.

Abstract: A disk drive that has a plurality of heads coupled to one or more disks. The heads have air bearing surfaces that compensate for a radial crown and a radial camber of an adjacent disk to maintain a flying height at a relatively constant level across the disk surface. By way of example, the air bearing surfaces may have crown and camber sensitivities that are opposite in sign from the crown and camber sensitivities created by the disk. The opposite sensitivities offset the sensitivities of the disk to maintain an essentially constant flying height as the head moves across the surface of a disk.

Abstract: A magnetic disk drive includes a magnetic disk and a femto slider. The magnetic disk has a minimum track linear velocity of 1 to 5 m/s. In one embodiment, the magnetic disk drive includes a negative pressure type femto slider and adopts a load/unload method. A gram load “GL” of a head suspension assembly HSA is set at a value exceeding about 3 mN and smaller than about 15 mN and a pitch static attitude “PSA” (deg) and pitch stiffness “Kp” (Nm/deg) satisfy the expression ((PSA×Kp)/GL)<0.25 mm. As a result, it is possible to prevent the femto slider from assuming a meta-stable flying high state referred to as a bi-stable height. Further, by setting the pitch static attitude “PSA” at a value of larger than 0 deg, it is possible to prevent the slider from assuming a state of meta-stable contact with the magnetic disk surface referred to as semi-stable drag.

Abstract: The present invention relates to a method for producing a transducer slider. The method involves first coating a substrate with a radiation-sensitive layer and exposing the radiation-sensitive layer to radiation according to an intensity pattern. Preferably, the intensity pattern is provided using a grayscale mask. Once the image is developed into the radiation-sensitive layer, the image is transferred into the substrate to form a transducer slider having a surface profile comprising a tapered edge. In the alternative or in addition, the surface profile may comprise a rounded corner. The invention also relates to a structure for forming a transducer slider.

Abstract: A disc head slider having a slider body that includes a bearing surface, a cavity dam and a sub-ambient pressure cavity is provided. The sub-ambient pressure cavity has a cavity floor, a plurality of sides and a depth that progressively varies between a point on one of the sides and a corresponding point on an opposing side. The depth is measured from the bearing surface to the cavity floor. The cavity floor comprises a plurality of substantially flat bottom surfaces that are separated by at least one elevational change. Other embodiments pertain to other specialized slider cavity configurations.

Abstract: A disk drive including a negative pressure type head slider having a transducer for reading/writing data from/to a disk having a plurality of tracks, and an actuator for moving the head slider across the tracks of the disk. The actuator includes an actuator arm rotatably mounted on a base of the head slider, a suspension fixed at a base end portion thereof to a front end portion of the actuator arm, and the head slider mounted on a front end portion of the suspension. The head slider includes a front pad having a raised surface and a step surface lower in level than the raised surface, the transducer formed near the air outlet end, and a first groove for generating a negative pressure by expanding air once compressed at the front pad. The bottom surface of the first groove is formed with a plurality of second grooves continuously extending from the downstream side of the front pad to the air outlet end. The second grooves are spaced from each other in the transverse direction of the head slider.

Abstract: A flying head slider includes a first air bearing having plural step-faces and being prepared on a base surface at air inflow side, and a second air bearing being prepared on the base surface at air outflow side. The upper most surface of the second air bearing is lower than the upper most surface of the first air bearing.

Abstract: A read head for use with an interconnect transmission line having a characteristic impedance of Z0 includes a tunnel valve device and a shunt resistor RS that is connected in parallel across the tunnel valve device. The tunnel valve device has a device resistance RT corresponding to a predetermined resistance-area (RA) product. The value of the shunt resistance is based on the parallel combination of RT and RS substantially equaling the characteristic impedance Z0 of the interconnect transmission line. The predetermined resistance-area (RA) product is about equal to at least about 10 Ohms-?m2. Alternatively, the predetermined resistance-area (RA) product is about equal to a “corner” value of RAc for the tunnel valve device.

Abstract: The present invention generally relates to a disk drive and methods for operating the same. A venting assembly of this disk drive generally includes a slider having an air bearing surface system for generating positive pressure to urge the slider away from a data storage disk, and a suction cavity for generating negative pressure to urge the slider toward the surface of the disk. The slider of the venting assembly also generally includes a first venting hole extending through the slider within the suction cavity. A first valve of the venting assembly is generally associated with the first venting hole to at least assist in controlling airflow through the same. Contact between a load beam of the venting assembly and a corresponding load/unload ramp of the disk drive during unloading of the slider generally tends to open the first valve and substantially dissipate the negative pressure within the suction cavity.

Abstract: A slider for a data storage device is disclosed. The slider includes a bearing pad or surface having a raised bearing surface, a stepped bearing surface and a recessed pressure cavity or cavities. The recessed pressure cavity or cavities provides a reduced raised bearing surface area to reduce stiction and shape sensitivity. The recessed pressure cavity or cavities include a recessed cavity surface which is recessed from the raised bearing surface of the bearing surface or pad and a cavity step to the raised bearing surface.

Abstract: A disc head slider having a slider body that includes a bearing surface, a cavity dam and a sub-ambient pressure cavity is provided. The sub-ambient pressure cavity has a cavity floor, a plurality of sides and a depth that progressively varies between a point on one of the sides and a corresponding point on an opposing side. The depth is measured from the bearing surface to the cavity floor. The cavity floor comprises a plurality of substantially flat bottom surfaces that are separated by at least one elevational change. Other embodiments pertain to other specialized slider cavity configurations.

Abstract: A system and method are disclosed for a subambient pressure air bearing slider utilizing negative pressure grooves. In one embodiment, a groove extends from a slider's leading edge, splits, and terminates in two locations at the slider's trailing edge. In one embodiment, a groove is provided in a slider's compression pad near the trailing edge of the slider.

Abstract: A magnetic disc apparatus includes a magnetic disc, a slider incorporating lifting rails or lifting pads, a magnetic head provided to a lifting rail or a lifting pad on the outflow end side, a suspension supporting the slider, and a carriage attached to the suspension. The slider has an inverted stepped wall formed in a shape such that it is caved in a direction from the inflow end to the outflow end of the slider, and a bleed surface formed at the outflow end side of the inverted stepped wall and caved from the lifting rails or the lifting pads. An action point of an equivalent load is located offset from the inverted stepped wall of the slider toward the inflow end of the slider.

Abstract: A head of a disk apparatus comprises a slider including a disk-facing surface positioned to face the surface of a recording medium and configured to fly by an air stream generated by the rotation of the recording medium in the clearance between the surface of the recording medium and the disk-facing surface. The disk-facing surface of the slider is sized not larger than 0.935 (mm)×0.

Abstract: A slider utilizes a triple-etch, high pitch-stiffness side rail ABS design. The slider is characterized by a relatively deep shallow recession at its leading edge, which maximizes the cavity area while at the same time increases the pitch angle to achieve DLC pad clearance as required by smooth media ABS designs. The slider ABS has a shallower recession at the trailing edge, which provides low gram-load sensitivity and low flying standard deviation. The slider ABS further presents a decreased sensitivity in response to altitude variations.

Abstract: A head and disk system for use in a disk drive that includes a slider having a surface that contacts the disk. This disk contacting surface of the slider is textured with pads, bumps, an etched surface or an otherwise roughened surface. The contact area of the disk has a greater roughness than a data zone. The head disk system exhibits acceptable stiction. Additionally, low glide avalanche over the CSS zone, thus enabling low fly height, is achieved.

Abstract: A method of maintaining a constant flying height of a magnetic head: adapted to maintain a flying height of a magnetic head on a magnetic disk substantially constant irrespective of a change of a skew angle, utilizing a device comprising a magnetic disk, a positioning device, a head supporting device and a magnetic head; said positioning device supporting one end of said head supporting device and rotating the head supporting device on a first plane placed on a second plane of said magnetic disk within a predetermined skew angle range; the head supporting device supporting said magnetic head at the other end thereof; the magnetic head being attached with reading/writing elements at an air discharge end of a slider having flying planes on a side of a third plane thereof opposing the magnetic disk; a thickness of said slider from each of the flying planes to an opposite surface on the reverse side thereof being 0.

Abstract: A decrease in the lift-up degree of the outflow end of a slider at an altitude of 3,000 m is set to be less than 2 nm or to be zero in order to set the lift-up degree of the outflow end to be less than 10 nm. There is provided a magnetic disc apparatus in which the action point of positive pressure is shifted toward the inflow end but the action point of negative pressure is shifted toward the outflow end so as to enhance the influence upon the outflow end by the negative pressure in order to effect an action in the increasing direction of the lift-up degree of the outflow end when the pressure is reduced. Further, it is possible to increase the lift-up degree of the outflow end when the pressure is decreased. The action point of the equivalent load is offset from the action point of positive pressure toward the inflow end, and the distance between the action point of the positive pressure and the action point of the equivalent load point is set to be greater than 0.