Abstract: This invention provides a method of producing a ceramic laminate body capable of suppressing the occurrence of de-lamination and cracks, and providing high reliability. This method comprises a heat-bonding step of covering a full periphery of side surfaces of ceramic layers 11 positioned in an orthogonal direction to a laminating direction with a side surface jig while the ceramic layers are laminated, heating the ceramic layers and pressing the ceramic layers from both end faces positioned in the laminating direction by end face jigs to form a heat-bonded ceramic laminate body; and a side surface grinding step of grinding or cutting the full periphery of the side surfaces inclusive of damage portions 9 occurring in the ceramic laminate body in the heat-bonding step.

Abstract: The present invention provides a composite magnetic body containing metallic magnetic powder and thermosetting resin and having a packing ratio of the metallic magnetic powder of 65 vol % to 90 vol % and an electrical resistivity of at least 104&OHgr;·cm. When a coil is embedded in this composite magnetic body, a miniature magnetic element can be obtained that has a high inductance value and is excellent in DC bias characteristics.

Abstract: A packaged air filter part and a method of packaging the air filter part are provided to suppress the absorption of organic substances by the air filter part. The air filter part is encased within a packaging material and has a filter medium capable of cleaning air in at least a part thereof. The dibutyl phthalate content per 1 g of the filter medium is 1.0 &mgr;g or lower when the filter medium is taken out of the encasing of the packaging material. The air filter package unit includes the air filter part, and a packaging material arranged so that the filter medium is shielded from outside air. The method of packaging an air filter includes a step of producing air filter part, a step of packaging the air filter part with a first material, and a step of further packaging the packaged air filter part with a second material.

Abstract: A magnetic element including: a composite magnetic member A containing a metallic magnetic powder in an amount of 50-70 vol. % and a thermosetting resin in an amount of 50-30 vol. %; a magnetic member B that is at least one selected from a ferrite sintered body and a pressed-powder magnetic body of a metallic magnetic powder; and a coil. The magnetic element is characterized in that a magnetic path determined by an arrangement of the coil passes the magnetic member A and the magnetic member B in series and the coil is embedded in the magnetic member A. The present invention also provides a method for manufacturing the magnetic element.

Abstract: On the occasion of the aligning process to transfer a predetermined pattern to a semiconductor wafer by irradiating a photoresist on the semiconductor wafer with an aligning laser beam of the modified lighting via a photomask MK, the photomask MK allocating, to provide periodicity, the main apertures to transfer the predetermined pattern as the apertures formed by removing a part of the half-tone film on the mask substrate and the auxiliary apertures not resolved on the semiconductor wafer as the apertures formed by removing a part of the half-tone film is used to improve the resolution of the pattern.

Abstract: A method of laminating at least two gas permeable sheet materials includes: (1) providing at least a first gas permeable sheet material, wherein at least a portion of at least a surface region of the first sheet material is thermoplastic material; (2) providing at least a second gas permeable sheet material of polytetrafluoroethylene; (3) superposing the sheet materials; and (4) contacting the sheet materials with a heating means to heat the thermoplastic material to a temperature from 140° to 230° C., so as to melt the thermoplastic material and laminate the sheet materials to one another, without the application of direct pressure in the thickness direction of the sheet materials during the contacting step so as to form a gas permeable laminate.

Abstract: A filter medium with excellent flame-resistant properties and an air filter unit using the same are provided which have a flame-resistant air permeable supporting material on at least one surface of a polytetrafluoroethylene (PTFE) porous film and which can be used as a ceiling device, etc.

Abstract: A magnetic thin film having excellent soft magnetic properties formed by alternately laminating a main magnetic layer and an intermediate layer, in which the main magnetic layer includes magnetic crystal grains substantially having a columnar structure which have an average height dl and an average diameter ds forming a shape ratio of 0.3.ltoreq.ds/dl.ltoreq.90.9, and the intermediate layer has saturation magnetic flux density of at least 0.1 tesla less than the main magnetic layer. The main magnetic layer and the intermediate layer having saturation magnetic flux density of at least 0.1 tesla less than the main magnetic layer are alternately laminated. It is preferable that the main magnetic layer has a thickness of 3 to 100 nm, and the intermediate layer has a thickness of 0.1 to 10 nm. In addition, it is preferable that a thickness of the entire laminated structure is in the range of about 100 nm to 10 .mu.m.

Abstract: A low-cost and small-size image reader incorporating a variable power function. An original document is irradiated with the light from a light source. The light is reflected in a reading position. The reflected light is incident on a mirror block via a fixed mirror. The light incident on the mirror block is deflected by a pair of mirrors. An optical path is thus extended and shortened in its length without taking a space in the horizontal directions of the reader. The mirror block and the lens are provided with driving devices. The mirror block and the lens are moved to adjust a focal point and a magnification.

Abstract: An additional MOS transistor receiving at its control electrode a signal complementary to that applied to control electrodes of MOS transistors is provided between a power supply node and a control electrode line formed by resistors having a significant resistance and interconnecting respective control electrodes of MOS transistors which are connected in parallel and each of which is connected between output signal line and power supply node. When MOS transistors are rendered non-conductive, the additional MOS transistor is rendered conductive. As a result, internal nodes are driven by an inverter and the additional MOS transistor to a power supply voltage, thereby turning off MOS transistors at the same timing. Consequently, through current in a semiconductor output circuit can be suppressed and an output signal has no ringing.

Abstract: An object is to provide a polytetrafluoroethylene (PTFE) porous composite film which has substantially no defect portion.There is provided the PTFE porous composite film by stretching a composite along its width direction which composite is composed of at least two overlapped films longitudinally stretched at a temperature not higher than a melting point of a sintered PTFE material, each film being obtained by paste-extruding and semi-sintering thereafter a PTFE produced by emulsion polymerization.

Abstract: A lamp in which a stable, long-term luminous operation can be accomplished is achieved by the fact that, in a mercury lamp of the short arc type in which a cathode and an anode located next to one another within an arc tube and in which both ends of the arc tube are provided with hermetically sealed portions, the cathode is installed on the tip of a rod-shaped component which extends from a respective one of the hermetically sealed portions, the cathode having a greater outer diameter than the rod-shaped component on which it is installed, and the rear end of the cathode tapering toward the respective hermetically sealed portion.

Abstract: An illumination device for an image input device includes a cylindrical light guiding unit, a board having a plurality of light emitting diode elements, a connection member connecting the light guiding unit with the board and a terminal reflection member formed at one end of the light guiding unit. A surface of the light guiding unit has a scattering reflection member extending linearly along the axial direction of the light guiding unit. A cylindrical reflection member is spaced around the light guiding unit and a linear space is provided in the reflection member along the axial direction of the guiding unit.

Abstract: A semiconductor exposure device having excellent throughput using a mercury lamp as an exposure light source. The mercury lamp is capable of providing an efficient i-ray output, with a small i-ray half width value, allowing correction of chromatic aberration. The semiconductor exposure device is further provided with an illumination optical system for illuminating a target surface and a projection optical system for projecting the image on the target surface. The illumination optical system is provided with the mercury lamp, an optical integrator, an optical system for guiding a flux of light emitted from the mercury lamp to the optical integrator and a condenser lens for converging the light from the optical integrator. The semiconductor exposure device is provided with a power source and an associated control circuit for supplying an electric current to the mercury lamp.

Abstract: This invention concerns a magnetic recording medium which comprises a nonmagnetic support, a magnetic layer provided on one surface of the nonmagnetic support and a backcoat layer provided on the other surface of the nonmagnetic support, wherein the nonmagnetic support is provided with such physical properties as Young's moduluses in the longitudinal direction and the lateral direction thereof in the range of 1300-1600 kg/cm.sup.2, respectively, and a breaking elongation in the range of 3-10% and said magnetic recording medium is provided on the magnetic layer side thereof with a convex cupping the magnitude of which is in the range of 0.02-0.20 mm at a width of 3.8 mm.The magnetic recording medium, therefore, realizes perfect head touch even when the thickness of the nonmagnetic support and the thickness of the whole medium are small.

Abstract: An image reading device includes a planar light source having sufficiently even illumination to allow accurate shading correction to be performed regardless of the position in the auxiliary scanning direction. The image reading device includes a light source, a photoelectric conversion device, a movement device and a computer. The planar light source includes a rod-shaped light-emitting device and a light-guiding plate that receives light from the rod-shaped light-emitting device and emits light from a single surface. The rod-shaped light-emitting device is at least along one lengthwise side of the light-guiding plate. The photoelectric conversion device converts the image into an electrical image signal which is processed by the computer.

Abstract: A porous polytetrafluoroethylene film which is excellent as an air filter used in clean rooms in a semiconductor industry, which is suitable for the collection of microparticles floating in a gas such as air and exhibits a low pressure drop is provided. The film has an average pore size of from 0.2 to 0.4 .mu.m and exhibits a pressure drop of from 20 to 50 mmH.sub.2 O when air is passed through it at a flow rate of 5.3 cm/sec. The film is prepared by stretching biaxially unsintered polytetrafluoroethylene at specific temperatures.

Abstract: A mercury lamp of the short arc type in which tantalum can absorb impurity gases to a sufficient degree even if the inside of the arc tube reaches a high temperature is achieved by providing an arc tube, within which mercury and an inert gas are encapsulated, with a pair of electrodes disposed opposite each other within the arc tube, each of the electrodes being supported by a respective terminal post, tantalum being provided on the terminal post of one of the electrodes, and by ensuring that both of the relationships (D2/D1)>1.3 and the relationship 0.2.ltoreq.(D2/D1).sup.2 /L.ltoreq.0.5 are satisfied at the same time, where D1 is an outer diameter of the terminal post in millimeters, D2 is an outer diameter of the electrode supported by the respective terminal post in millimeters, and L is a distance between a tip of the electrode on which the tantalum is provided and the tantalum on the terminal post of that electrode.

Abstract: A magnetic material for microwave, comprising a phase having garnet structure, said phase comprising a component represented by Formula I(A.sub.3-a Bi.sub.a)B.sub.x O.sub.y Formula Iwhere A represents a component comprising at least one element selected from yttrium (Y) and rare earth elements, B represents a component comprising Fe, a represents a number in the range of 0 to less than 2.00, x represents a number in the range of 4.76 to less than 5.00, and y represents a number satisfying an inequality 1.5(3+x).ltoreq.y.ltoreq.12.

Abstract: An imaging apparatus comprising imaging devices for converting the light of a subject into electric signals, an image forming device for forming an image of the light of the subject on the imaging devices and a connecting device for connecting the image forming device to the imaging devices. In the imaging apparatus, the connecting device has at least three pins so inserted in holes bored in either the imaging devices or the image forming device as to be vertically movable and a biasing device for making the pins contact with a confronting surface of the image device or the image forming device. Heads of the pins are formed in configuration adaptive to point-contact with the confronting surface. The hole is bonded to the pin, and the pin is bonded to the confronting surface, respectively.