Abstract: A magnetic head provided on a drain end side of a head substrate constituting a head slider includes a heater, a write coil, a shield, an insulation layer between the heater and the head substrate, a thermal insulation layer whose thermal conductivity is lower than the insulation layer and a thermal radiation layer whose thermal conductivity is higher than the shield, wherein the thermal insulation layer is disposed between the heater and the head substrate and the thermal radiation layer is disposed between the write coil and the head substrate.

Abstract: A magnetic head includes: a slider which floats above a recording medium by air flow generated by rotation of the recording medium; and an element forming section fixed to an air outflow side of the slider and formed with an element which accesses the recording medium. The element forming section includes: a recording element having a main magnetic pole which records data in the recording medium; and a reproducing element which is formed closer to the slider than the recording element and which reproduces data recorded in the recording medium. The element forming section further includes: a heat insulation layer formed between the main magnetic pole and the reproducing element; and a heater formed closer to the slider than the heat insulation layer.

Abstract: A magnetic head that floats up while directing an air bearing surface to a relatively moving storage medium and stores information into the storage medium, the magnetic head includes: a main magnetic pole that generates a magnetic field for recording information into the storage medium; and a heater that adjusts a floating-up amount of the magnetic head from the storage medium by deforming the air bearing surface with heat, wherein the heater has a shape that extends towards the air bearing surface up to a proximate distance at which a distance from the air bearing surface overlaps with the main magnetic pole while monotonously decreasing the distance from the air bearing surface to pass a proximate point to the main magnetic pole, and that extends away from the air bearing surface while monotonously increasing the distance from the air bearing surface after passing the proximate point.

Abstract: A method for manufacturing a head stack assembly that includes a pair of suspensions each of which supports a head, an arm that drives the head, and a pair of base plates that attach the pair of suspensions to both sides of the arm that has a perforation hole, each of the pair of base plates having a boss with an opening includes the step of swaging the pair of base plates with the arm by passing, in one direction, a processing member larger than the opening through the perforation hole and the base plates while the pair of base plates are being inserted into the perforation hole at both sides of the perforation hole, wherein where a neutral plane is defined as a plane that halves a thickness of the arm and is perpendicular to a section that includes a center axis of the perforation hole, a first position is defined as a position that has a minimum internal diameter of the base plate, and a second position is defined as a position closest to the neutral plane among contact positions between the base plates an

Abstract: A magnetic head is composed of a write head which magnetically records information by emitting magnetic flux, which is generated by a write coil, from a magnetic pole unit to a recording medium; and a read head having a reading element which converts record magnetic flux, which is emitted from the recording medium, to an electric signal. In a write coil facing area facing an area in which the thin-film coil pattern of the write coil is disposed, a heater coil which causes a medium facing surface to protrude toward a recording medium side by thermal expansion caused by power distribution and overheating is disposed via an insulating layer. In the heater coil, a wide terminal pattern is disposed outside the write coil facing area, and a heater pattern having a width narrower than the terminal pattern is disposed in the write coil facing area.

Abstract: According to an aspect of an embodiment, a magnetic head includes: a write element including a first magnetic pole and a second magnetic pole magnetically connected to the first magnetic pole; and a nonmagnetic insulating layer made of inorganic material surrounding the write element. The magnetic head further includes: upper and lower low-thermal-expansion material layers disposed on and under the nonmagnetic insulating layer, respectively, the low-thermal-expansion material layers having a thermal coefficient lower than that of the nonmagnetic insulating layer; and a heater element embedded in the nonmagnetic insulating layer.

Abstract: A magnetic head structure has a coil and a magnetic pole allowing a magnetic flux generated by the coil to be transmitted therethrough and forming a magnetic gap. An insulating layer surrounds the coil, and a protective layer covers the insulating layer and the magnetic pole. The insulating layer has a volume equal to or greater than a value which is determined with respect to a thickness of the protective layer. It is preferable to increase the volume of the insulating layer as the thickness of the protective layer is made greater. By increasing the volume of the insulating layer, the protrusion of a portion of a floating surface of the magnetic head slider near the magnetic pole, toward the disk, is reduced.

Abstract: A magnetic head structure capable of reducing the quantity of protrusion of a portion of a floating surface, at which a coil is located, toward a disk has been disclosed. The head comprises a coil 22, a magnetic pole 26 allowing a magnetic flux generated by the coil to transmit therethrough and forming a magnetic gap 24, an insulating layer 32 surrounding the coil, and a protective film 34 covering the insulating layer and the magnetic pole and, if a first direction is defined as that in which the side of the floating surface 16 of the magnetic head structure extends when viewed in the direction in which the coil, the magnetic pole, the insulating layer, and the protective film are laminated, and a second direction is defined as that perpendicular to the first direction, the ratio of the maximum length of the insulating layer in the first direction to that in the second direction is equal to or greater than 1.5.

Abstract: A magnetic head has a read head in which a read element which converts recording magnetic flux emitted from the magnetic disk into an electric signal is disposed between a pair of shield layers on a substrate, and magnetically records information by emitting magnetic flux generated by a write current flowing through a write coil from a magnetic pole unit to a magnetic disk. A heater coil is disposed to face the write coil via an insulating layer, and a medium facing surface is caused to protrude toward the recording medium side by thermal expansion caused by electric power distribution and heating.

Abstract: A magnetic head is composed of a write head which magnetically records information by emitting magnetic flux, which is generated by a write coil, from a magnetic pole unit to a recording medium; and a read head having a reading element which converts record magnetic flux, which is emitted from the recording medium, to an electric signal. In a write coil facing area facing an area in which the thin-film coil pattern of the write coil is disposed, a heater coil which causes a medium facing surface to protrude toward a recording medium side by thermal expansion caused by power distribution and overheating is disposed via an insulating layer. In the heater coil, a wide terminal pattern is disposed outside the write coil facing area, and a heater pattern having a width narrower than the terminal pattern is disposed in the write coil facing area.

Abstract: A magnetic coil of a thin film magnetic head includes uniform upper and lower coil pattern pieces extending in the direction parallel to the medium-opposed surface at a constant width. A magnetic pole has the front end exposed at the medium-opposed surface. The magnetic pole extends backward from the front end. The length of the uniform lower and upper coil pattern pieces correspond to the width of the magnetic pole. The thin film magnetic head enables establishment of the narrowest width at the uniform upper and lower coil pattern pieces in the magnetic coil. The length of the magnetic pole is reduced as much as possible. The uniform upper and lower coil pattern pieces are also allowed to have a minimum length. The electric resistance is thus reduced in the magnetic coil. This results in establishment of an effective magnetic property in the thin film magnetic head.

Abstract: A magnetic head structure has a coil and a magnetic pole allowing a magnetic flux generated by the coil to be transmitted therethrough and forming a magnetic gap. An insulating layer surrounds the coil, and a protective layer covers the insulating layer and the magnetic pole. The insulating layer has a volume equal to or greater than a value which is determined with respect to a thickness of the protective layer. It is preferable to increase the volume of the insulating layer as the thickness of the protective layer is made greater. By increasing the volume of the insulating layer, the protrusion of a portion of a floating surface of the magnetic head slider near the magnetic pole, toward the disk, is reduced.

Abstract: A magnetic head structure has a coil and a magnetic pole allowing a magnetic flux generated by the coil to be transmitted therethrough and forming a magnetic gap. An insulating layer surrounds the coil, and a protective layer covers the insulating layer and the magnetic pole. The insulating layer has a volume equal to or greater than a value which is determined with respect to a thickness of the protective layer. It is preferable to increase the volume of the insulating layer as the thickness of the protective layer is made greater. By increasing the volume of the insulating layer, the protrusion of a portion of a floating surface of the magnetic head slider near the magnetic pole, toward the disk, is reduced.

Abstract: A method of generating mesh data by orthogonally dividing a target object into a mesh of elements by a plurality of grid lines orthogonally crossing each other includes the steps of (a) detecting vertexes of the target object; and (b) dividing the target object orthogonally by the grid lines passing through the detected vertexes.

Abstract: A method of generating mesh data by orthogonally dividing a target object into a mesh of elements by a plurality of grid lines orthogonally crossing each other includes the steps of (a) detecting vertexes of the target object; and (b) dividing the target object orthogonally by the grid lines passing through the detected vertexes

Abstract: Herein disclosed is a mesh creating device, a mesh creating method and a mesh creating program which speed up the analysis processing without deteriorating analysis accuracy and to effectively facilitate handling of the data after creation of the analysis model. The mesh creating device creates an analysis mesh for the data of a construction composed of a plurality of objects by creating one or more groups of attributes to which said plurality of objects belong respectively, setting mesh creating specifications on an object attribute-by-attribute basis according to the one or more groups of attributes, and conducting mesh creations according to the set object attribute mesh creating specifications.

Abstract: Herein disclosed is a mesh creating device, a mesh creating method and a mesh creating program which are adapted to speed up the analysis processing without deteriorating analysis accuracy and to effectively facilitate an handling of the data after creation of the analysis model. The mesh creating device is capable of creating an analysis mesh for the data of a construction composed of a plurality of objects, and comprised of: a first mesh creating specification setting section adapted to set attributes to which said plurality of objects belong respectively and set mesh creating specifications for the respective attributes; and a mesh creating section adapted to conduct mesh creations according to the set mesh creating specifications.

Abstract: The present invention provides a numerical analysis model data generating program, method, and system for generating numerical analysis model data, which is used for numerical analysis, on the basis of three-dimensional shape data of a structure that is an object of analysis. Three-dimensional shape data defining the structure is inputted. Holes included in the inputted three-dimensional shape data are extracted, and the size of each of the holes is calculated. If the size of a given hole is smaller than a predetermined size, the hole is filled. Thus, numerical analysis model data is generated. According to the present invention, when the numerical analysis model data is generated, a relatively small amount of analysis model data can be generated without adversely affecting the accuracy in numerical analysis.

Abstract: A method for manufacturing a head stack assembly that includes a pair of suspensions each of which supports a head, an arm that drives the head, and a pair of base plates that attach the pair of suspensions to both sides of the arm that has a perforation hole, each of the pair of base plates having a boss with an opening includes the step of swaging the pair of base plates with the arm by passing, in one direction, a processing member larger than the opening through the perforation hole and the base plates while the pair of base plates are being inserted into the perforation hole at both sides of the perforation hole, wherein where a neutral plane is defined as a plane that halves a thickness of the arm and is perpendicular to a section that includes a center axis of the perforation hole, a first position is defined as a position that has a minimum internal diameter of the base plate, and a second position is defined as a position closest to the neutral plane among contact positions between the base plates an

Abstract: A magnetic head structure capable of reducing the quantity of protrusion of a portion of a floating surface, at which a coil is located, toward a disk has been disclosed. The head comprises a coil 22, a magnetic pole 26 allowing a magnetic flux generated by the coil to transmit therethrough and forming a magnetic gap 24, an insulating layer 32 surrounding the coil, and a protective film 34 covering the insulating layer and the magnetic pole and, if a first direction is defined as that in which the side of the floating surface 16 of the magnetic head structure extends when viewed in the direction in which the coil, the magnetic pole, the insulating layer, and the protective film are laminated, and a second direction is defined as that perpendicular to the first direction, the ratio of the maximum length of the insulating layer in the first direction to that in the second direction is equal to or greater than 1.5.