Abstract: A stator includes a first teeth unit including a first insulator having an annular first crossover wire guide and a plurality of first winding units radially provided at regular intervals on an outer circumference of the first crossover wire guide to cover teeth of one phase group of an alternating current, the teeth of the one phase group having upper halves fitted to the first winding units, a third insulator that covers lower halves of the teeth, and a winding wire of one phase wound around the teeth of the one phase group, a second teeth unit having an identical configuration to that of the first teeth unit in which a winding wire of the other phase is wound in a concentrated manner, with second winding units inserted between adjacent ones of the first winding units, and an annular yoke including a plurality of recesses at regular intervals.

Abstract: A stator includes a first teeth unit including a first insulator having an annular first crossover wire guide and a plurality of first winding units radially provided at regular intervals on an outer circumference of the first crossover wire guide to cover teeth of one phase group of an alternating current, the teeth of the one phase group having upper halves fitted to the first winding units, a third insulator that covers lower halves of the teeth, and a winding wire of one phase wound around the teeth of the one phase group, a second teeth unit having an identical configuration to that of the first teeth unit in which a winding wire of the other phase is wound in a concentrated manner, with second winding units inserted between adjacent ones of the first winding units, and an annular yoke including a plurality of recesses at regular intervals.

Abstract: A magnetic head is disclosed that includes a head slider having a medium opposing surface to oppose a magnetic recording medium, the head slider being configured to fly by receiving airflow, caused by the movement of the magnetic recording medium, on the medium opposing surface, the medium opposing surface including an air bearing surface and a groove part, the groove part being lower than the air bearing surface; and a buffer member configured to prevent the magnetic recording medium from being damaged when the groove part comes into contact with the magnetic recording medium, the buffer member being provided on a part of the surface of the groove part in the peripheral part of the medium opposing surface.

Abstract: A head slider body includes a main body having a protruding air bearing surface, and a wall portion protruding from the air bearing surface near one end in one axial direction of the main body. Extending in the other axial direction in the air bearing surface, a groove portion extends between the wall portion and the air bearing surface in the main body. A read/write head is provided near the other end in the one axial direction of the head slider body.

Abstract: A head slider having an air inlet end and an air outlet end includes a rail having a flat air bearing surface for generating floating force when the disk rotates, the rail being disposed on a disk-facing surface; and an electromagnetic transducer disposed near the air outlet end where the rail is positioned. The head slider has a cavity on the air outlet end near the electromagnetic transducer.

Abstract: A head slider includes a parallelepiped-shaped slider base having a flat flying surface. A flat first step is formed at an air inlet end of the flying surface to be stepped from the flying surface. A flat second step is formed on the first step to be stepped from the flying surface. A vacuum area is formed at a downstream end of an air flow flowing from the first and second steps on the flying surface. At least one groove is formed on a portion of the first step for introducing air to the vacuum area. The width of the groove at the air inlet end and the width of the groove at an air outlet end can differ from each other. A trailing edge of the first step can be closer to a trailing edge of the slider base than a trailing edge of the second step.

Abstract: A magnetic head slider includes a floating surface that is opposed to a disk during the use of the magnetic head slider and that has a front part and a rear part with respect to the direction of rotation of the disk, and an electromagnetic transducer element. A front rail extending in the transverse direction and a pair of rear rails are laid on the floating surface. A plurality of first projections is formed on the front side and the rear side of the front rail. A plurality of second projections is formed behind the plurality of first projections. When the disk is stopped, the plurality of first projections is stationed on the disk but the floating surface is not in contact with the disk. The height of each of the plurality of second projections is smaller than the height of each of the plurality of first projections.

Abstract: A method of manufacturing a floating head includes an inspecting step for inspecting performance of the floating head by simulating different environmental conditions, the inspecting step includes the steps of setting an electrical power to a heat generating material provided to the floating head to attain the flying height fluctuation predetermined for each environmental condition, projecting the head element in accordance with each environmental condition by driving the head element and feeding electrical power corresponding to each environmental condition preset in the setting step to the heat generating material, and inspecting performance of the floating head by changing the projecting condition.

Abstract: The head slider allows the first protection film having the first thickness to cover over the top surface of the rail. The second protection film having the first thickness covers over the surface of the insulating non-magnetic film at a position downstream of the rail. The third protection film having the second thickness smaller than the first thickness covers over the write gap of the head element at a position downstream of the rail. Even when the head element protrudes from the surface of the insulating non-magnetic film, the third protection film is prevented from getting closer to the recording medium beyond the first and second protection films. The head element is prevented from contacting with the recording medium. This results in avoidance of damages to the head slider.

Abstract: A head slider includes a parallelepiped-shaped slider base having a flat flying surface. A flat first step is formed at an air inlet end of the flying surface to be stepped from the flying surface. A flat second step is formed on the first step to be stepped from the flying surface. A vacuum area is formed at a downstream end of an air flow flowing from the first and second steps on the flying surface. At least one groove is formed on a portion of the first step for introducing air to the vacuum area. The width of the groove at the air inlet end and the width of the groove at an air outlet end can differ from each other. A trailing edge of the first step can be closer to a trailing edge of the slider base than a trailing edge of the second step.

Abstract: A head slider includes a parallelepiped-shaped slider base having a flat flying surface. A flat first step is formed at an air inlet end of the flying surface to be stepped from the flying surface. A flat second step is formed on the first step to be stepped from the flying surface. A vacuum area is formed at a downstream end of an air flow flowing from the first and second steps on the flying surface. At least one groove is formed on a portion of the first step for introducing air to the vacuum area. The width of the groove at the air inlet end and the width of the groove at an air outlet end can differ from each other. A trailing edge of the first step can be closer to a trailing edge of the slider base than a trailing edge of the second step.

Abstract: A front rail is located near the inflow end of a slider body. The front rail defines a front air bearing surface at a first height from a reference surface of the slider body. A rear rail located near the outflow end of the slider body. The rear rail defines a rear air bearing surface at a second height smaller than the first height from the reference surface. A head element is embedded in the rear air bearing surface. The rear air bearing surface can be distanced from the surface of a recording medium by an amount larger than the distance between the front air bearing surface and the surface of the recording medium. The head element is thus prevented from contact or collision against the recording medium to the utmost even when the head element protrudes out of the rear air bearing surface.

Abstract: A head slider having an air inlet end and an air outlet end includes a rail having a flat air bearing surface for generating floating force when the disk rotates, the rail being disposed on a disk-facing surface; and an electromagnetic transducer disposed near the air outlet end where the rail is positioned. The head slider has a cavity on the air outlet end near the electromagnetic transducer.

Abstract: A magnetic head is disclosed that includes a head slider having a medium opposing surface to oppose a magnetic recording medium, the head slider being configured to fly by receiving airflow, caused by the movement of the magnetic recording medium, on the medium opposing surface, the medium opposing surface including an air bearing surface and a groove part, the groove part being lower than the air bearing surface; and a buffer member configured to prevent the magnetic recording medium from being damaged when the groove part comes into contact with the magnetic recording medium, the buffer member being provided on a part of the surface of the groove part in the peripheral part of the medium opposing surface.

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 disk device rotates a disk-like storage medium, and accesses the storage medium, and a slider floats over a storage medium by the action of an airflow caused by rotation of the storage medium and can float stably despite of an environmental change. An inner rail formed on a floating surface of the slider has a first step part located on an air inlet side and a second step part located adjacent to the first step part on the air outlet side and having a height greater than that of the first step part, and the first step part and the second step part are separated by a wall along a first segment extending from an inner side toward an outer side and a second segment extending from the outer-side end of the first segment toward the outer side with being slanted toward the air inlet side.

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 head slider which can suppress the adhesion of dust particles to its flying surface. At least one air bearing portion and a land portion for forming a vacuum area on the flying surface are provided on the flying surface of the head slider. The land portion is formed in such a manner as to have a difference in level so as to be closer by a step to a disk medium than an end surface of the slider base. The water repellency of an end surface of the land portion and the water repellency of the end surface of the slider base are made higher than the water repellency of the air bearing portion. The water repellency of the end surface of the land portion is increased more than the that of the air bearing portion.

Abstract: With a view to providing a head slider which can suppress the adhesion of dust particles to a flying surface of the head slider when the head slider flies and a disk drive employing the same head slider, a head slider in which at least an air bearing portion and a land portion for forming a vacuum area on the flying surface are provided on the flying surface of the head slider, the land portion being formed in such a manner as to have a difference in level so as to be closer by a step to a disk medium than an end surface of the slider base, wherein the water repellency of an end surface of the land portion and the water repellency of the end surface of the slider base are made higher than the water repellency of the air bearing portion.

Abstract: A magnetic head slider includes a floating surface, that is opposed to a disk during the use of the magnetic head slider and that has a front part and a rear part with respect to the direction of rotation of the disk, and an electromagnetic transducer element. A front rail extending in the transverse direction and a pair of rear rails are laid on the floating surface. A plurality of first projections is formed on the front side and the rear side of the front rail. A plurality of second projections is formed behind the plurality of first projections. When the disk is stopped, the plurality of first projections is stationed on the disk but the floating surface would not be in contact with the disk. The height of each of the plurality of second projections is smaller than the height of each of the plurality of first projections.