Abstract: [Object] To provide a magnetic sensing device that can obtain the strength of an external magnetic field under circumstances where a relatively strong disturbance takes place, and an electronic compass using the same. [Solving Means] A current c supplied to a coil 112 and its current deviation x are set. The current c, current c+x, and current c?x are supplied to the coil 112 to generate AC magnetic fields, which are then applied to MR elements 111, and voltages V0 to V2 are detected. Using the voltages V0 to V2 detected by the voltage detector 13, an amplitude determining unit 14 determines whether the magnetic field is outside a sensing range of the MR elements 111. When the magnetic field is outside the sensing range of the MR elements 111, an amplitude controller 17 increases the current deviation x, and the current amplifier 18 supplies current using the current deviation newly set by the amplitude controller 17 to the coil 112. In this manner, the slope of the MR elements 111 is detected.

Abstract: The object of this invention is to have shorter sealing chambers (preheating chamber and gradual cooling chamber) located before and after the brazing atmospheric chamber, to make higher sealing of the atmosphere, and to prevent the scratch caused by the conventional curtains made of metal or others. In order for that, the structures made of steel or graphite are installed standing perpendicular to the moving direction on the conveyor belt which is circulating through the atmospheric furnace. And the bendable or flexible sealing materials are installed on the ceiling and on the right and left side walls of the sealing chambers (preheating chamber and gradual cooling chamber), which are located before and after the atmospheric furnace, into the above two chambers, and making these bendable or flexible sealing materials have rubbing contact with the above mentioned structures.

Abstract: When aluminium products are preheated in a preheating furnace up to about 500° C. before they are brazed with a flux in a heating furnace, a nitrogen atmosphere in the preheating furnace is made convectional by fans for improving heating efficiencies and also for having the oxygen which is brought into the preheating furnace as a disturbance thereof and scattered about in the nitrogen atmosphere, contacted to furnace inner walls of the preheating furnace which are made from carbonaceous materials, and reacted therewith so as to be changed to CO, resulting in keeping the oxygen concentration of nitrogen atmosphere low, whereby when the aluminium products are brazed by heating them in a continuous atmosphere furnace including said preheating furnace and said heating furnace, heating time thereof is shorten and the brazing is made more economically than before.

Abstract: The object of this invention is to have shorter sealing chambers (preheating chamber and gradual cooling chamber) located before and after the brazing atmospheric chamber, to make higher sealing of the atmosphere, and to prevent the scratch caused by the conventional curtains made of metal or others. In order for that, the structures made of steel or graphite are installed standing perpendicular to the moving direction on the conveyor belt which is circulating through the atmospheric furnace. And the bendable or flexible sealing materials are installed on the ceiling and on the right and left side walls of the sealing chambers (preheating chamber and gradual cooling chamber), which are located before and after the atmospheric furnace, into the above two chambers, and making these bendable or flexible sealing materials have rubbing contact with the above mentioned structures.

Abstract: A method of brazing brass parts without oxidation of zinc, which is contained in the parts, during brazing of the parts with phosphorous bronze solder at relatively low temperature of 630-700° C., the brazing being made by making the wall of brazing furnace or muffle of carbon material, like graphite etc., making an inert nitrogen gas or mixture of nitrogen and hydrogen in the furnace atmosphere contact with the carbon material above, producing CO less the P co=10?3 atm. in the furnace, and making the furnace atmosphere reductive against zinc in the brass parts and/or flux in the solder.

Abstract: When aluminium products are preheated in a preheating furnace up to about 500° C. before they are brazed with a flux in a heating furnace, a nitrogen atmosphere in the preheating furnace is made convectional by fans for improving heating efficiencies and also for having the oxygen which is brought into the preheating furnace as a disturbance thereof and scattered about in the nitrogen atmosphere, contacted to furnace inner walls of the preheating furnace which are made from carbonaceous materials, and reacted therewith so as to be changed to CO, resulting in keeping the oxygen concentration of nitrogen atmosphere low, whereby when the aluminium products are brazed by heating them in a continuous atmosphere furnace including said preheating furnace and said heating furnace, heating time thereof is shorten and the brazing is made more economically than before.

Abstract: A mounting structure for a high temperature superconductor device, such as a filter, housed in a closed vacuum chamber and operated at a low temperature. The filter has dielectric substrate having: first and second surfaces; a circuit portion made of a superconducting thin film formed on the first surface of the dielectric substrate; and a ground layer consisting of a superconducting thin film formed on second surface of the dielectric substrate and a metal film deposited on the superconducting thin film. The mounting structure comprises: a device holder for holding the filter thereon; a conductive layer intervening between the ground layer of the filter and the device holder; urging parts for resiliently urging the filter toward the device holder. The conductive layer is made of a metal selected from among the group consisting of gold, silver, copper, aluminum and an alloy made of at least one of gold, silver, copper, and aluminum.

Abstract: Plural units each composed of a metallic frame and a dielectric substrate mounted on the frame are stacked on one another, thereby forming a unitary case. A superconducting circuit such as a resonator is formed on an upper surface of the substrate, and a ground plane, made of a metallic material, preferably, a superconducting material, is formed on a lower surface of the substrate. The ground plane is exposed to a center opening of the frame, so that the ground plane of one substrate faces the superconducting circuit of another substrate which is stacked underneath the one substrate with a space therebetween. Thus, a plurality of the superconducting circuits are mounted in a compact unitary case.

Abstract: An optical writing head which is simplified in construction and reduced in production cost. The optical writing head comprises a light emitting means, and a substrate on which the light emission means is mounted. The substrate has a light transmitting property at a portion thereof which opposes to the light emitting means. Light emitted from the light emitting means is taken out through the substrate so that it may be irradiated upon a light receiving body. A fiber bundle may be provided with one end opposed to the light emitting means and with the other end opposed to an object for exposure. Where the head is of a type wherein it contacts with an object when it optically writes, the other end of the fiber bundle is formed into a curved face, but where the head is of another type wherein it does not contact with an object when writing, a gas blowing out means is provided to assure a gap between the other end of the fiber bundle and an object.

Abstract: Am optical writing head which is simplified in construction and reduced in production cost. The optical writing head comprises a light emitting means, and a substrate on which the light emitting means is mounted. The substrate has a light transmitting property at a portion thereof which opposes to the light emitting means. Light emitted from the light emitting means is taken out through the substrate so that it may be irradiated upon a light receiving body. A fiber bundle may be provided with one end opposed to the light emitting means and with the other end opposed to an object for exposure. Where the head is of a type wherein it contacts with an object when it optically writes, the other end of the fiber bundle is formed into a curved face, but where the head is of another type wherein it does not contact with an object when writing, a gas blowing out means is provided to assure a gap between the other end of the fiber bundle and an object.

Abstract: An optical writing head which is simplified in construction and reduced in production cost. The optical writing head comprises a light emitting means, and a substrate on which the light emitting means is mounted. The substrate has a light transmitting property at a portion thereof which opposes to the light emitting means. Light emitted from the light emitting means is taken out through the substrate so that it may be irradiated upon a light receiving body. A fiber bundle may be provided with one end opposed to the light emitting means and with the other end opposed to an object for exposure. Where the head is of a type wherein it contacts with an object when it optically writes, the other end of the fiber bundle is formed into a curved face, but where the head is of another type wherein it does not contact with an object when writing, a gas blowing out means is provided to assure a gap between the other end of the fiber bundle and an object.

Abstract: A printer which includes a latent image carrier in the form of an endless belt, a carriage moveable parallel to a lengthwise dimension of the endless belt, and a paper transport device for moving a sheet of paper perpendicular to the direction of movement of the belt. Mounted on the carriage is a condition control mechanism for putting the latent image carrier in a condition ready for writing a latent image on it, a writing mechanism for forming a latent image on the latent image carriage, a transfer unit for transferring a toner image from the latent image carrier to a recording medium, and a fixing unit for fixing the toner image on the recording medium. After a write operation, the belt is rotated on-half its length and held immoveable.

Abstract: An LED array head has an LED array which selectively emits light. The LED array is mounted on a substrate in a flip chip form with a light emitting section located opposed to a surface of the substrate. A fiber bundle including a plurality of optical fibers is buried in the substrate with an end portion of the fiber bundle located at a position in the vicinity of the light emitting section of the LED array.

Abstract: An LED array head which has a simplified structure and can be produced at a reduced cost. The LED array head comprises an LED array, a plurality of flexible printed circuits connected at faces thereof opposing to light emitting portions of the LED array to the LED array, an optical fiber bundle having an end face located in an opposing relationship to each of the light emitting portions of the LED array, and a common fiber plate in which the fiber bundles are mounted and on which the flexible printed circuits are supported. In producing the LED array head, the LED array is mounted on the opposing faces of the flexible printed circuits by a tape automated bonding system, and the fiber plate is located such that the end faces of the fiber bundles may oppose the light emitting portions of the LED array so as to support the flexible printed circuits on the fiber plate. A modified LED array is also disclosed.

Abstract: A current location updating display for indicating the current location of moving members such as an automobile while updating from time to time based on output from a magnetic azimuth sensor adapted to detect the azimuth of terrestrial magnetism. Output signals from the magnetic azimuth sensor are stored in a data memory after A/D conversion and correction, and a predetermined amount of data read out from the data memory is subject to the averaging processing. With this, plural angle information (sin .theta. and cos .theta.) signals or plural angle (.theta.) signals are averaged out including a signal corresponding to disturbance magnetism. Thus average data signals are integrated by an integrator and then sent to a display portion. Through the averaging processing an azimuthal error is restrained as small as possible, so that the current location or running path of the moving member may be indicated correctly.

Abstract: In a moving object, such as automobile, having a steering gear which determines a traveling course, and a traveling distance detector which detects a traveling distance; a direction detection apparatus comprising a steering position detector detecting an amount of displacement of the steering gear, and an arithmetic unit which calculates a traveling direction of the moving object from a steering position signal proportional to the amount of displacement and a traveling distance signal proportional to the traveling distance, thereby to detect the traveling direction of the moving object. The apparatus can detect the traveling direction without being affected by a magnetic deviation, an abnormal magnetic field, etc.

Abstract: A course guidance apparatus for vehicles has a direction sensor and a speed sensor carried on the vehicle and a traveling locus corresponding to detection signals from the direction sensor and the speed sensor is plotted in a manner to be superposed on a map film and displayed on a projection screen. The traveling locus is traced by a laser beam on a trace plate having electrooptic, optomagnetic, or incoherent-to-coherent light conversion properties. The superposed picture is clearly viewed, and the misregistration between the map and the traveling locus is avoided.

Abstract: Disclosed is a magnetic course detector capable of accurately detecting the bearing of the course of a traveling body independently of the position a magnetic bearing sensor is installed in the traveling body through rotatably mounting the magnetic bearing sensor and making corrections for the offset and sensitivity of its output.