Abstract: An Si.sub.3 N.sub.4 layer is formed on a surface of a wafer, which is an object to be processed, at a high temperature of, for example, 780.degree. C., using a vertical thermal processing apparatus having a reaction tube of a double-wall structure comprising an inner tube and an outer tube in which a predetermined reduced-pressure status is maintained within the reaction tube while a reaction gas comprising, for example, SiH.sub.2 Cl.sub.2 and NH.sub.3 is made to flow from an inner side to an outer side of the inner tube by the action of a first gas supply pipe and first exhaust pipe provided in the thermal processing apparatus. Next, the temperature in the interior of the reaction tube is raised to, for example, 1000.degree. C., a reaction gas comprising, for example, H.sub.2 O vapor and HCl is made to flow from the outer side to the inner side of the inner tube by the action of a second gas supply pipe and second exhaust pipe, and an SiO.sub.2 layer is formed by the oxidation of the surface of the Si.sub.

Abstract: In a horizontally opposed type engine, right and left exhaust pipes are provided for right and left cylinder banks, respectively and a collecting pipe is disposed to collect gases these two exhaust pipes. Further, in a two-stage catalytic converter system, two main catalysts are provided for the two exhaust pipes, respectively, and a subsidiary catalyst is provided in the collecting pipe. An oxygen sensors is provided in each of the exhaust pipes on the upstream side of it's main catalyst. The air-fuel ratios of both the banks are controlled simultaneously on the basis of the output of one of the sensors, and the air-fuel ratio of the other bank is corrected on the basis of a difference between the outputs of the two oxygen sensors. Accordingly, the air-fuel ratios of both right and left banks can be controlled appropriately, without the use of an auxiliary oxygen sensor. As a result, it is possible to improve the purification capability of the auxiliary catalyst in the collecting pipe.

Abstract: A device for developing an electrostatic latent image includes a developing housing having a developing chamber and stirrer chamber, a replenishing device for feeding the developing agent onto the peripheral surface of the developing roller, a stirring device disposed in the stirrer chamber to stir the developing chamber, and a developing agent detecting sensor disposed in the developing housing under the stirring device. The stirring device has a rotary shaft, a cleaning member mounted on the rotary shaft at a position corresponding to a development agent detector unit of the developing agent detecting sensor, and a stirrer member mounted on the rotary shaft at the side of the cleaning member. The stirrer member is provided with tilted guide portions for sending the stirred developing agent toward the developing agent detecting sensor.

Abstract: A vibrating screen for the sizing of granular material such as gravel, sand, crushed stone, etc., having a frame (1) and a screen body (2) supported on springs (6), directional oscillating movements being imparted to the screen body by a motor powered vibrator mechanism (3). The screen has two or more screen decks (11-13), each one divided into three component screens (14a-c, 15a-c, 16a-c) having successively decreasing inclinations in a direction towards the discharge end (9) of the screen, each lower screen deck furthermore having an increased inclination in relation to the nearest deck above.

Abstract: An illumination beam is sent onto a localized region of the surface layer of a thin-film structure which is being etched in a vacuum processing chamber. The reflective light beam is sent through a filter to the matrix sensor of a video camera, and to an optical disperser or an interference filter, a selection diaphragm, a fiber-optic cable, and an analysis slit at the input of the optical disperser or interference filter. A spectral analysis of the reflective light beam is performed to detect, by reflectometry, the transition of the following layer in a specific analysis region of the localized region.

Abstract: An image forming apparatus capable of unsealing a toner cartridge automatically and suitably as the toner cartridge is replaced with a new cartridge. The image forming apparatus includes a developing device, and a toner supplying device for supplying toner to the developing device. The toner cartridge is removably mountable on the toner supplying device. Only when the toner cartridge is mounted, and the toner cartridge has not yet been unsealed, is an operation for unsealing the toner cartridge performed.

Abstract: A structure in which a toy is driven by a magnetic force including a rotary disk having a plurality of inner magnets thereon, with one magnet located at the center of the disk and the other magnets spaced therefrom. The polarity of the magnet in the center of the disk is different from the polarity of the remaining magnets. A mirror is mounted over the outer magnets and a plurality of inner magnets, each bearing a toy, are supported on the mirror. The polarity of the outer magnets is opposite the polarity of the inner magnets and is the same as the polarity of the inner magnet at the center of the rotary disk. The rotary disk may be driven to rotate by an outer driven wheel which, in turn, is rotated by a driven claw. The rotary disk is supported above a fixing disk. The driven wheel engages and rotates the rotary disk, causing movement of the outer magnets and toys on the mirror along the path of rotation of the inner magnets due to the magnetic attraction between the magnets of opposite polarities.

Abstract: A power unit for a front drive vehicle having a horizontally opposed engine mounted longitudinally, a clutch, a transmission and a differential, in which a differential housing integrally formed with a transmission housing is disposed at a space adjacent to the frontally offset cylinder block of left or right cylinder blocks and a left and right axle shaft is extended from the differential housing respectively. Further, the differential housing is connected by a fastening bolt with a slide bush to a lower case of the engine so as to support the reaction force derived from the axle shafts. The power unit thus constituted offers a short length of a front overhang of the vehicle and the compactness of a power unit.

Abstract: In a fuel supply system for a vehicle, provided with a fuel tank having a bottom wall having an upward convex portion dividing an interior space of the fuel tank into a first chamber and a second chamber, a discharge rate of an electric fuel pump is controlled properly to reduce power consumption and fuel consumption. A fuel level monitoring means compares an output D.sub.m of a fuel meter unit 13 representing a level of fuel in the fuel tank with a set threshold fuel level L.sub.j, i.e., a minimum fuel level that requires the operation of a jet pump which pumps fuel from the second chamber into the first chamber. A power supply control means controls power supply to the fuel pump to supply power necessary for driving the fuel pump for operation at a discharge rate equal to the sum of the fuel consumption of the engine and a minimum required flow rate necessary for maintaining the performance of the fuel supply system when D.sub.m .gtoreq.L.sub.j or for operation at a maximum discharge rate when D.sub.

Abstract: A method for inhibiting the polymerization of vinyl aromatics such as styrene with a mixture of 3,5-di-tert-butyl-4-hydroxy-N,N-dimethylbenzyl amine and carboxylic acids or anhydrides thereof, in the presence of air or oxygen. The weight ratio of said 3,5-Di-tert-butylhydroxy-N,N-dimethylbenzyl amine, carboxylic acid (or carboxylic acid anhydride) and the air is 1:1 to 0.05:0.05 to 15, respectively.

Abstract: An input/display integrated information processing device has: image display circuit for displaying document and image information; image input circuit through which information of an image such as a picture, a photograph, documents drawn or written on a sheet presented by the user can be an input; a visual coincidence structure for integrally combining a display screen of the image display circuit with an input screen of the image input circuit so as to establish visual coincidence of screens as viewed from the user; contact information detection circuit for, when a finger of the user, the sheet presented by the user, or the like makes contact with the contact information detection circuit, detecting information of a contact position, the contact information detection circuit being disposed on the whole of the input screen of the image input circuit or the display screen of the image display circuit; image extraction circuit for automatically extracting only a required portion from image information input th

Abstract: A door operator includes a low noise, low radiation emission but high sensitivity super-regenerative receiver. The low radiation emission of the receiver allows the installation of plural operators in close proximity. The door operator receiver includes a super-regenerative circuit apparatus with a super-regenerative circuit and a resistively loaded cascode preamplifier stage that phase shifts a received RF signal and tightly couples the preamplifier stage output to the super-regenerative circuit. A cascode circuit arrangement of a field effect transistor (FET) and a bipolar transistor provides forward gain and very high reverse direction gain or isolation for the preamplifier stage. Preferably, the resistive loading elements and the phase-shifting elements are coupled to the cascode circuit between the transistors. The present invention also relates to a cascode preamplifier stage, a super-regenerative circuit, and a RF receiver each including such a preamplifier stage.

Abstract: A method of producing .epsilon.-caprolactam from cyclohexanone in the gaseous phase using MFI catalysts on whose surface symmetrically arranged OH groups are present.

Abstract: A process for making a casting mold or core utilizes a refractory composition including a slurry of yttria, an acid and an organic solvent. The composition is applied to a mold or pattern, dried, and fired to produce a mold or a layer of a mold or core. The articles produced are relatively unreactive with titanium and titanium alloys during casting.

Abstract: The invention relates to a reagent consisting of at least one enzyme and at least one other substance, which are covalently or noncovalently bound to a particle, which is smaller than or is equal to 1000 Angstrom in diameter. The invention also relates to method and use of the reagent for determination or studies of a cell or a virus or another component in a sample. According to the invention, these determinations are made with for example some ELISA-technique (competitive, sandwich, etc.), employing the reagent preferrably in the form of a suspension in buffered water, instead of and in the same way as described for soluble enzyme conjugates. The substance can be an antibody, a lectin, avidin or an antigen, the enzyme can be for example peroxidase, alkaline phosphatase, and the particle can be an inorganic or an organic polymeric compound or a combination thereof, as, for example, tresyl-activated glycerylpropyl-silica.

Abstract: A method for fabricating a superconducting device with a substrate, a first oxide superconductor thin film, a barrier layer, a diffusion layer, and a second oxide superconductor thin film. The first oxide superconductor thin film with a very thin thickness is formed on the principal surface of the substrate. The barrier layer and the diffusion source layer are formed on a portion of the first oxide superconductor thin film. The second oxide superconductor thin film is grown on an exposed surface of the first oxide superconductor thin film until the barrier and diffusion source layers are embedded in the second oxide superconductor thin film, so that a material of the diffusion source layer is diffused into the second oxide superconductor thin film.

Abstract: Flawless nitrating layers are obtained during the nitro-carburizing of components made from steels which form passive layers in salt baths if these components are first pre-treated in an oxidizing salt melt at 300.degree. to 500.degree. C. prior to the nitro-carburizing process.

Abstract: A latent electrostatic image developing device for use in developing a latent electrostatic image to a toner image in an image forming machine. The device includes a developing roller within a development housing for holding a developer on its surface in a developer holding zone and conveying the developer, which is held to a developing zone, in order to apply it to a latent electrostatic image. A restricting portion has a blade which includes a rigid part for acting on the surface of the developing roller in a developer restricting zone located between the developer holding zone and the developing zone in order to restrict the amount of the developer held on the surface. The blade is caused to protrude to the upstream side as viewed in the direction of movement of the developing roller, and that border of its protrusion facing the developing roller is provided with a C 0.1 to 0.6 mm chamfer (C being the JIS designation for a 45 degree chamfer).

Abstract: A phosphorus-free and boron-free cleaning composition containing a phosphorus-free aqueous solution containing an active ingredient (e.g., hydrogen peroxide or a compound capable of releasing hydrogen peroxide under the conditions prevailing in use of the composition), at least one organic stannate which is a tetravalent tin complexed with dicarboxylic acid, hydroxy carboxylic acid, or tricarboxylic acid, and optionally at least one organic stabilizer which is a benzoate, a sulfonic acid or salt, or mixtures thereof. The active ingredient is hydrogen peroxide or a percarbonate. The aqueous solution has an alkaline pH.

Abstract: A toner supply device in which a toner cartridge can smoothly be inserted and removed. The toner supply device includes a toner supply device main body capable of removably setting the toner cartridge to a setting position. The toner supply device main body includes a guide tray for guiding the toner cartridge along an insertion direction when the toner cartridge is inserted to and pulled out from the setting position. Thus, the toner cartridge can smoothly be inserted and removed. The guide tray can assume a guide posture for guiding the insertion and removal of the toner cartridge, and a retreat posture where the guide tray is being retreated to a retreat position. Various engagement members on the guide tray secure or release the toner cartridge to or from the guide tray.