Abstract: A precise positioning actuator to be fixed with a head slider with at least one head element and with a support, for precisely positioning the at least one head element, including a pair of movable arms capable of displacing in response to a drive signal applied to the actuator The head slider is caught in a space between the movable arms.

Abstract: An optical recording medium having a higher improved read accuracy is disclosed. In the case of irradiating a laser beam to an optical recording medium including an optical reflective layer and a recording layer so as to record information therein, in the recording layer, a virtual recording cell having an arbitrary unit length and a unit width perpendicular to the unit length is continuously defined. In the case where the laser beam is irradiated to the virtual recording cell over the entire allowable irradiation time T securable to one virtual recording cell, a reference power of the laser beam is preset so that an optical reflectance of the virtual recording cell can be reduced more than 50% with respect to the initial reflectance.

Abstract: A laminate type electronic component 1 has, at least, a dielectric part 2 containing a dielectric as a constituent material, and a pair of a first external electrode 31 and a second external electrode 32, each disposed in close contact with the dielectric part 2, opposing each other by way of the dielectric part 2. The dielectric part 2 has laminated dielectric layers 21a to 21f; and at least two internal electrodes 23a to 23e disposed one by one between layers adjacent each other in the dielectric layers 21a to 21f, while each being electrically connected to one of the first external electrode 31 and second external electrode 32. At least one of the internal electrodes 23a to 23e is electrically connected to the first external electrode 31, and at least one of the internal electrodes 23a to 23e is electrically connected to the second external electrode 32.

Abstract: A controller 7A for generating a drive signal PS for switching control of a switching element in a switching power supply, includes a duty ratio generator 10, 11 for detecting a duty ratio D of the drive signal PS for controlling the switching element of the switching power supply, and generating a signal corresponding to the duty ratio; a control signal generator 13, 14 for generating a control signal CS on the basis of a difference between a target voltage VREF in the switching power supply and an output voltage Vo detected in the switching power supply; an operation unit 15 for generating a signal corresponding to a product of the signal corresponding to the duty ratio, and the control signal CS; and a drive signal generator 16, 17 for generating the drive signal PS on the basis of the signal generated by the operation unit 15.

Abstract: A multilayer capacitor includes: a dielectric element; two kinds of terminal internal conductors and two kinds of connecting internal conductors both disposed in the dielectric element; two kinds of terminal electrodes; and two kinds of external electrodes, wherein: the terminal internal conductor of one kind has a first terminal-side leadout portion led out to one face of the dielectric element and a first external-side leadout portion led out to the other face, and the terminal internal conductor of the other kind has a second terminal-side leadout portion led out to the one face and a second external-side leadout portion led out to the other face; the connecting internal conductor of one kind has a third external-side leadout portion led out to the other face, and the connecting internal conductor of the other kind has a fourth external-side leadout portion led out to the other face; the terminal electrode of one kind is connected to the first terminal-side leadout portion, and the terminal electrode of th

Abstract: A circuit device comprises at least one under bump metal formed on a surface of a substrate and a connection bump provided on the uppermost layer of the under bump metal. At least one laminated metallic film is formed on part of or all of wiring pattern formed on the surface of the substrate, so that the laminated metallic film formed is consisted of the same material and also the same thickness as the under bump metal.

Abstract: A reproduction apparatus is capable of reproducing information recorded on information recording media including at least a super RENS recording medium. The reproduction apparatus includes: an optical head that receives laser light that has been reflected or transmitted by the information recording medium and photoelectrically converts the laser light to an electric signal; a signal processing circuit that extracts an AC component from the electric signal and attenuates the AC component by a predetermined attenuation; an amplitude controlling circuit that controls an amplitude of an electric signal outputted from the signal processing circuit so as to become a predetermined amplitude; and a reproduction circuit that reproduces information recorded on the medium based on an electric signal outputted from the amplitude controlling circuit. An information recording medium testing apparatus includes the reproduction apparatus and a test information generating circuit that generates test information.

Abstract: The present invention provides a thin film pattern forming method capable of forming a thin film pattern having small dimensions at higher precision. A thin film pattern forming method of the invention includes: a step of forming a first thin film on a substrate; a step of forming a bilayer resist pattern; a step of forming a soluble layer as a covering layer; and a step of forming a first thin film pattern by selectively removing the first thin film by dry etching using the bilayer resist pattern as a mask. Since the soluble layer generally and continuously covering the periphery of the bilayer resist pattern and the first thin film in an area other than the area covered with the bilayer resist pattern is formed, deformation of the shape of the bilayer resist pattern can be suppressed at the time of dry etching and a deposition amount of a re-deposit 9 can be also reduced. Consequently, the isolated first thin film pattern having small dimensions and defined by a contour can be formed at higher precision.

Abstract: A multi-layered optical recording medium comprising a plurality of sets of at least a recording layer formed of an inorganic material and a resin layer formed of an energy-beam curable resin as an overlaying layer of the recording layer on a base with a fitting center hole formed in a center part. The recording layer except the recording layer immediately adjacent to the base are formed so that the inner circumferential edge of a cover layer, an upper layer, having a larger inner diameter than that of a spacer layer, a lower layer, is located on the outside of the inner circumferential edge of the recording layer in a range of 2 mm to 15 mm inclusive. The adhesive force between the spacer layer and the cover layer can be increased, and thus, separation at each inner circumferential edge between the recording layer and the spacer layer, between the recording layer and the cover layer, and between the spacer layer and the cover layer can be effectively avoided.

Abstract: In an electronic component having a piezo-electric resonator 10 formed on an element substrate 11 and obtaining a signal having a predetermined resonant frequency by a bulk wave propagating within a piezo-electric film 15, a mounting substrate 19 on which the piezo-electric resonator 10 is mounted by face-down bonding through N bumps 18, when a maximum diameter of said N bumps 18 is defined as D ?m, die shear strength of said N bumps 18 is not smaller than ND/6 (g), preferably, not smaller than ND/3.6 (g).

Abstract: Method of manufacturing a thin film magnetic head which can exhibit a high-performance head characteristic without complicating the manufacturing procedure. A coil connection is integrated into one body and constituted part of the thin film coil. A connection middle pattern is provided on the coil connection at the time of forming a pole tip so that the position of the upper surface of the connection middle pattern becomes higher than that of the top pole tip. After the whole portion is covered by an insulating film, the connection middle pattern also can be exposed by polishing the surface of the insulating film until the top pole tip is exposed. Therefore, unlike the case where no connection middle pattern is provided, it is not necessary to form an opening by partially removing part of the insulating film. As a result, the number of manufacturing steps can be reduced.

Abstract: An eddy-current probe according to the present invention comprises: a substrate having a first surface facing to a subject to be tested and a second surface opposite to said first surface; an exciting coil formed on the second surface, having a pair of current lines in parallel with each other through which exciting currents flow in opposite directions to each other during testing, for generating an alternate magnetic field applied to the subject by the exciting currents; and at least one eddy-current sensor positioned on a central axis between the pair of current lines on the second surface of the substrate, for detecting a magnetic field generated newly from the subject by an eddy-current induced by the alternate magnetic field.

Abstract: Internal dielectric layers isolated between them by a ceramic layer are arranged in a dielectric body, other internal conductor layers also isolated between them by a ceramic layer are arranged in the dielectric body by being isolated from the above internal conductor layers. Each of the all internal conductor layers is formed with a cut part, and a channel part is formed around the cut part, and the channel parts are arranged so that currents flow in mutually reverse directions between channel parts of internal conductor layers adjoining across a ceramic layer. Consequently, the equivalent serial inductance of the multilayer capacitor is largely reduced and fluctuations of a power source voltage of a CPU is made small.

Abstract: An Ag ion 6 is locally implanted into a thin film 4 containing, as main components, at least one of Fe and Co and at least one of Pd and Pt and a heat treatment is then carried out, and a portion 7 into which the Ag ion 6 is implanted becomes a portion 9 having a large coercive force and a portion 8 into which the Ag ion 6 is not locally implanted becomes a portion 10 having a small coercive force.

Abstract: The optical recording medium according to the present invention includes a recording layer, a second absorbing layer and a heat sink layer formed in order from an incident side for laser light, the second absorbing layer having an extinction coefficient k for a wavelength of the laser light that satisfies 0.06?k?1.0. In this case, a first absorbing layer is preferably formed on an incident side-surface of the recording layer for the laser light, the first absorbing layer having an extinction coefficient k for the wavelength of the laser light that satisfies 0.06?k?1.0. By doing so, even when recording at high density, it is possible to sufficiently improve the reproduction durability and to sufficiently reduce the cross-erasing.

Abstract: It is an object of the present invention to provide a method for recording data in an optical recording medium which can record data in a write-once type optical recording medium at a high linear recording velocity using a laser beam having a low recording power.

Abstract: The present invention provides an antireflection film for transfer that can be transferred to the surface of plates or other less-flexible articles to form an antireflection layer with a uniform thickness that not only provides a high antireflection effect on a light in the visible light range but also offers a high solvent resistance. The present invention also provides an antireflection-treated article.

Abstract: A composite type thin-film magnetic head is provided, which comprises: a write head element; a pair of terminal pads for the write head element; a pair of lead conductors for the write head element, electrically connecting the write head element to the pair of terminal pads for the write head element; a read head element; a pair of terminal pads for the read head element; and a pair of lead conductors for the read head element, electrically connecting the read head element to the pair of terminal pads for the read head element. The pair of lead conductors for the write head element and the pair of lead conductors for the read head element are formed into patterns that have no overlapped portions with each other through only an insulating layer.

Abstract: A multilayer ceramic capacitor comprising an internal electrode layer, an internal dielectric layer having a thickness of less than 2 ?m, and an external dielectric layer is provided, wherein the internal dielectric layer and external dielectric layer contain a plurality of dielectric particles, and when assuming that an average particle diameter of the entire dielectric particles in the internal dielectric layer is D50a (unit: ?m), an average particle diameter of the entire dielectric particles existing at a position being away at least by 5 ?m from the outermost internal electrode layer in the thickness direction is D50b (unit: ?m), a ratio (D50a/D50b) of the D50a and D50b is y (no unit), standard deviation of a particle size distribution of the entire dielectric particles in the internal dielectric layer is ? (no unit), and a ratio that dielectric particles (coarse particles) having an average particle diameter of 2.

Abstract: One aspect of the invention provides a signal separating device comprising a first and a second circuit branch connected to an antenna port, the first circuit branch comprising a filter for passing signals in a first frequency band, and the second circuit branch comprising a filter for passing signals in a second frequency band. The first and second circuit branches being arranged so that a respective reactive impedance is presented to the antenna port in both said first and said second frequency bands. The device further comprises an impedance matching circuit at the antenna port arranged to substantially to cancel out the respective reactive impedances. In the preferred embodiment, each circuit branch presents a respective shunt capacitance to the antenna port when out-of-band and the matching circuit comprises a shunt inductor at the antenna port.