Abstract: A thin film magnetic head includes a slider and a thin film magnetic transducing element, wherein the slider is provided with an insulating film on a surface of an electric conductive substrate, the thickness of the insulating film being in a range of 0.5 .mu.m-3 .mu.m, and the thin film magnetic transducing element is formed on the insulating film and has a thin film magnetic circuit including a magnetic film and a coil film.

Abstract: A suspension includes a resilient flexure for supporting a magnetic head slider near its one end, and a load beam with a base end portion, for supporting the flexure. Particularly, connection conductors are formed on the flexure in a thin film pattern, and one ends of the connection conductors are to be connected to the magnetic head slider and the other ends of the connection conductors are positioned near the other end of the flexure. The other end of the flexure extends to at least a position of the base end portion of the load beam.

Abstract: After forming the first shield layer 23 on a basic substrate 21 and 22, a GMR film 25 is formed and embedded in the shield gap layers 24 and 26, in addition, a first insulation layer 28' where the edge defines a reference position of a throat height zero is formed on a first magnetic layer 27, a gap layer 28 is formed on a magnetic pole portion of the first magnetic layer 27 and the first insulation layer, then a second magnetic layer 29 extended above the first insulation layer 38' from the upper side of the magnetic pole portion of the first magnetic layer 27 is formed, after smoothing its surface by the second insulation layer 31, thin film coils 32 and 34 are formed on this second insulation layer, and the third magnetic layer 36 is formed on the insulation layers 33 and 35 where the magnetic pole portion and the thin film coil of the second above magnetic layer are isolated.

Abstract: An objective lens driver in which a movable portion 1 with an objective lens 11 is supported on a fixed portion by two groups of elastic supporting members each being horizontally bent which are disposed on both sides of the objective lens 11 such that each group of elastic supporting members are vertically arranged on each side of the objective lens, and the upper elastic supporting members of the groups of elastic supporting members are spaced from each other horizontally, is improved such that each group of elastic supporting members vertically arranged on each side of the objective lens are not parallel to each other. Further, damping material are fixedly disposed between both ends of the elastic supporting members and stuck onto the elastic supporting members, and the amount of the damping material on one side of the objective lens is different from that of the damping material on the other side of the objective lens, and a method of manufacturing the objective lens driver.

Abstract: A magnetic head with a spin valve effect MR element and a method of manufacturing the head. A plurality of spin valve effect MR elements on a substrate are formed, a plurality of pairs of lead conductors connected with the respective spin valve effect MR elements on the substrate are formed, and then a plurality of protection circuits of magnetization inversion connected between the respective pairs of lead conductors on the substrate are formed. Each of the protection circuits is constituted so as to turn on when it receives an energy with a level at which the pinned direction inversion in each of the spin valve effect MR elements occurs.

Abstract: An organic EL device comprises on a substrate an electron injecting electrode, a hole injecting electrode, and an organic layer located between both the electrodes. The substrate has an optical refractive index that is within.+-.0.05 of that of the organic layer. By reducing losses due to a refractive index difference between the substrate and the organic layer, light emission luminance fluctuations can be reduced as much as possible even when there is a variation in the thickness of the organic layer.

Abstract: A method and an apparatus are provided for processing a slider having a rail forming part of a medium facing surface of the slider which faces a medium, at least part of an outer side of the rail being located inside a side of the slider. The slider includes at least first edges each between the medium facing surface of the rail and the outer side of the rail and a second edge located closer to the side of the slider than the first edges. At least the first edges and the second edge are removed.

Abstract: A multilayer varistor comprising a varistor chip body having alternately stacked ceramic layers and internal electrode layers is provided. The ceramic layer is composed of a composite oxide containing Ti and/or Zr and Ba as a main component and Si and/or Al as a subordinate component, substantially free of Cr, and has a perovskite phase. The internal electrode layer is composed of a conductor containing a base metal such as Ni or Ni alloy as a main component. The varistor is used in an electric circuit for suppressing noise.

Abstract: An objective lens drive device has a movable section which has an objective lens and is supported by wires extended from a stationary section, and the wires which are positioned by guide holes formed in the movable section or stationary section. In the device, the wires are fixedly positioned in such a manner that the wires are in contact with the inner walls of the guide holes.

Abstract: A semiconductor device is formed in a self-light-emitting apparatus having a substrate and a plurality of self-light-emitting elements formed on the substrate. The semiconductor device is used to drive one of the self-light-emitting elements. The semiconductor device includes an active layer of semiconductor material, in which a source region and a drain region are formed. A source electrode has a multi-layered structure including an upper side layer of titanium nitride and a lower side layer of a high melting point metal having low resistance. The source electrode is electrically coupled to the source region. A drain electrode has a multi-layered structure including an upper side layer of titanium nitride and a lower side layer of a high melting point metal having low resistance. The drain electrode is electrically coupled to the drain region. An insulation layer is formed on the active layer. A gate electrode is formed on the insulation layer.

Abstract: A composite type thin film magnetic head, in which saturation and leakage of a magnetic flux can be suppressed although a pole portion is miniaturized and throat height, apex angle and MR height can be precisely formed to have desired values, and a method of manufacturing the same are proposed. A recessed portion 25 is formed in a substrate 23 by using, as a mask, a first magnetic layer 24 constituting a bottom shield for a MR layer 32, a second magnetic layer 27 and a thin film coil 30 are formed within the recessed portion such that the thin film coil is supported by an insulating layer 29 in an isolated manner, surfaces of these first and second magnetic layers and insulating layer are flattened to form a common unit for manufacturing a composite type thin film magnetic head. Then, a third magnetic layer 34 is formed such that the third magnetic layer is coupled with the second magnetic layer 27 to constitute a bottom pole and its surface is flattened.

Abstract: In a (Ge,Sb)-Te based optical recording medium of phase change type whose rate determining step in production has been initialization of the recording layer, the time required for production is reduced, and stable recording/reproducing properties are realized from the first overwriting operation. A phase-change type optical recording disc of write once read many-type requiring no initialization is also provided. The optical recording medium comprises a transparent substrate and a recording layer on the transparent substrate. The recording layer comprises at least one Te-based thin film and at least one reactive thin film, and the Te-based thin film is in contact with said reactive thin film. The Te-based thin film is formed from a Te-based material containing at least 95 at % of Te, and the reactive thin film is formed from a (Ge,Sb)-based material mainly comprising Ge and/or Sb. The optical change type material is formed by the mixing of the materials constituting the reactive thin film and Te.

Abstract: In the phase change type optical recording medium of the present invention, loss of reliability by high-temperature storage is prevented, and self-erasure (a phenomenon of partial erasure of the record mark by heat diffusion in the lateral direction during the irradiation of the recording laser beam) is suppressed. There is thus provided an optical recording medium designed for use in a drive system wherein overwriting is conducted at a linear velocity V.sub.0 which satisfies the relation:0.6<V.sub.2nd /V.sub.0 <1.25when V.sub.2nd is the overwriting linear velocity at which the frequency component corresponding to the second harmonic of the frequency of the recording signal used for the overwriting is minimized when the record marks formed by the overwriting are reproduced and measured for such frequency component. Also provided is an optical recording medium adapted for use in a drive system wherein overwriting is conducted at a linear velocity V.sub.

Abstract: A chip mounting apparatus capable of permitting a chip mounting operation to be executed at an increased speed and ensuring continuous running of the apparatus over a long period of time. The apparatus includes a chip observing camera mounted on the side of a chip mounting head, a lighting unit mounted on the side of the chip mounting head to light a background of a chip held on a chip suction nozzle of the head, a reflection unit mounted on the side of the chip mounting head to input an image of the chip to the chip observing camera, feeder and stocker sections each adapted to replaceably hold a chip storage package therein, and a package replacement mechanism for carrying out replacement of the chip storage package between both sections.

Abstract: The electric power conversion device includes an AC section, a DC section, a switching section connected between the AC section and the DC section for making power conversion by switching operation, and a control section for control the switching section. In the DC section is installed a ripple detection device for detecting a ripple component emerging into the DC side and for generating a ripple detection signal. When the DC component is included in the output current of the AC section, a ripple component having the same frequency with the AC frequency of the AC section output current is superimposed in the DC section. The ripple detection device is installed in the DC section, and thereby the ripple component emerging into the DC section is detected by the ripple detection device as a reflection of the DC offset included in the output current.

Abstract: In a magnetic recording medium which comprises a magnetic layer having magnetic metal powder and a binder as major components, the magnetic layer being disposed on one side of a non-magnetic support member, the binder comprises a vinyl chloride copolymer, a polyurethane resin having a group which contains metal sulfamate as a functional group, and a curing agent. The polyurethane resin comprises a group containing metal sulfamate by 0.5 to 3 per molecule, a blending weight ratio of the vinyl chloride copolymer and the polyurethane resin of 30/70 to 70/30, and the curing agent is present in an amount of 10 to 60 weight parts to 100 weight parts of the total of the vinyl chloride copolymer and the polyurethane resin. The invention also provides a magnetic recording medium which further comprises a non-magnetic underlayer and a backcoat layer, wherein a binder comprising polyurethane resin having a group which contains metal sulfamate also is used.

Abstract: A combination type thin film magnetic head including a magnetoresistive type reading thin film magnetic head and an inductive type writing thin film magnetic head is formed by forming a first magnetic layer 33 having a thickness of about 70-150 nm on a whole surface of an insulating substrate 31, 32, forming a second magnetic layer 34 having a thickness of about 2-3 .mu.

Abstract: A dust core ferromagnetic powder comprises a ferromagnetic metal powder, an insulating material, and a lubricant. The insulating material comprises a phenol resin and/or a silicone resin, and the lubricant comprises at least one compound selected from the group consisting of magnesium stearate, calcium stearate, strontium stearate, and barium stearate. It is possible to achieve a dust core having high saturation magnetic flux density, low losses, and satisfactory permeability with its dependence on frequency being improved.

Abstract: A first pole tip 212 at a write element 2 is provided projecting above a first yoke 211. A second pole tip 222 is adhered onto a gap film 23 that is adhered onto the first pole tip 212. The front end portion of a second yoke 221 is laminated on the second pole tip 222. At least either the first pole tip 212 or the second pole tip 222 is constituted of a material having a higher saturation magnetic flux density than that of permalloy. At least either the first yoke 211 or the second yoke 221 is constituted of a material having a higher resistivity than that of permalloy.

Abstract: A multilayer electronic part having the shape of a substantially rectangular parallelopiped is constituted which has a multilayer body formed by superposing coil conductors and green sheets of a magnetic or nonmagnetic material. Terminal electrodes are formed respectively on both ends of the multilayer body along the direction of the magnetic flux generating when current is caused to flow through the coil conductors in the multilayer body. The terminal electrodes each has a conductive substrate formed within the area of the end of the multilayer body and consisting of a lamination body as a component of the multilayer body.