摘要:
A red light fluorescent material is disclosed which contains simultaneously phosphorus and at least one alkaline earth metal selected from among magnesium, calcium, strontium, and barium, each in an amount in the range of from 10.sup.-6 to 10.sup.-3 mol per mol of a europium-activated rare earth oxide fluorescent material substantially represented by the general formula, (L.sub.1-x Eu.sub.x).sub.2 O.sub.3, (wherein L stands for at least one element selected from among rare earth elements and x for a numerical value in the range of 0.01.ltoreq.x.ltoreq.0.20). This red light fluorescent material possesses the nature of manifesting high initial luminescent brightness (efficiency) and entailing only slight decline of efficiency during the lighting of lamp. A fluorescent lamp has a fluorescent material layer formed as deposited on the inner wall surface of a glass tube and containing as at least a red luminescent component the fluorescent material mentioned above. This fluorescent lamp is capable of repressing the degradation of luminescent efficiency and luminescent chromaticity by aging.
摘要:
A communication apparatus communicating other apparatuses includes: a switch for switching between a vertical polarized antenna and a horizontal polarized antenna; a communication device for transmitting and receiving the electric wave via one of the antennas, which is selected by the switch; a monitor for monitoring a relative distance between the apparatus and other apparatuses; and a controller for controlling the switch such that the switch selects the vertical polarized antenna when the relative distance is equal to or larger than a distance threshold, and the switch selects the horizontal polarized antenna when the relative distance is smaller than the distance threshold. The distance threshold is larger than a distance between the apparatus and a dip point.
摘要:
An instrument panel unit of a vehicle incorporates a radio signal receiver formed on a circuit board which is fixed over a meter circuit board in parallel thereto within a meter housing. It is disposed so that an antenna inlet on the circuit board is located in one outer region among longitudinally trisected regions of the meter circuit board. The meter circuit board works efficiently as additional part of antenna, thereby improving the signal receiving performance inclusive of the antenna gain of the receiver.
摘要:
A paper feeding device comprising a tray storing case attachable to and removable from a device housing; a rotatable tray, provided in the tray storing case, which rotates copy paper to a longitudinal and lateral feed position; and a mechanism for lifting up a paper-feed end of a paper holding plate provided in the tray when paper is to be fed. The mechanism is composed of a guide member provided in the device housing; a lift-up guide provided on a side face located on a paper-feed end of the tray; a first rotary bar provided in the tray storing case and driven by the guide member when the tray is attached thereon; and a second rotary bar, a spring and a lift plate driven by the lift-up guide when the tray is in the paper-feed position. The first and second bars are driven simultaneously, thus lifting up the paper-feed end of the paper holding plate. Alternatively, the mechanism comprises at least three springs provided between the tray and the tray storing case; a guide rib provided in the tray storing case; and a pivot pin, a wire and a slide plate provided on the paper holding plate. The guide rib causes the slide plate to rotate and the wire pulls the pivot pin downwards. A simplified and miniaturized mechanism that lifts up and lowers the paper holding plate is thus achieved.
摘要:
A fixing device for electrophotography has a heating roller and a compression roller compressed against each other. Copy paper with toner image on its surface is passed inbetween to have the image fixed. The heating roller is hollow and contains a heater inside. To control the heat output of the heater, a temperature detector is positioned on the surface of the heating roller near the edge of the paper passing between the rollers where no toner image is formed. The wall thickness of the heating roller is reduced to about 0.8-1.5 mm for improved heat distribution characteristics.
摘要:
A pressure device for applying pressure between an upper fixing roller and a lower fixing roller, the pressure applying device being disposed at each end of the lower fixing roller and including a bearing member for supporting a rotary shaft mounted in the lower fixing roller and a biasing spring for biasing the bearing member upwards. The upper and lower fixing rollers are held in pressure contact with each other through depression of the upper fixing roller towards the lower fixing roller, under the influence of the pressure device.
摘要:
A jig for bite alignment in dentistry enables to achieve precise bite registration without using the wax rim, and a bite registration method and a manufacture method of dentures using the jig for bite alignment. Using the jig for bite alignment in dentistry provided with the bite material fixing portion in which the bite material is arranged for recording the occlusal position of teeth and with the implant connecting portion for attaching and detaching the implant arranged in oral cavity, the implant connecting portion is mounted on the implant buried in the alveolar bones of an oral cavity to record the occlusal position of teeth through the bite material arranged in the bite material fixing portion.
摘要:
An in-vehicle antenna device includes: a dielectric element having a front surface, first and second side surfaces and a rear surface and including a power supply point on both the first and second side surfaces, a first conductive surface on the first side surface, a second conductive surface on the second side surface, and a third conductive surface on the rear surface; and an antenna element including a base element coupled with the power supply point at one corner of the front surface and a branch element connected to the base element and having an end. A part of the branch element moves apart from one of the first and second conductive surfaces as it goes from the base element to the one end of the branch element. The front surface is attached to a windshield of a vehicle.
摘要:
A power line communication system includes a plurality of communication nodes, a communication line coupling the communication nodes, a direct current power line coupling a connection point of the communication line with one of a positive terminal of a battery and a supply terminal of a load, and a capacitor coupled between the direct current power line and a ground. The communication nodes communicate with each other by superimposing a high frequency signal having a wavelength of λ to the communication line. The capacitor is coupled with the direct current power line at a position where a line length from the connection point is (n×λ/2+λ/4), where n is a natural number including zero.
摘要:
An in-vehicle antenna device includes: a dielectric element having a front surface, first and second side surfaces and a rear surface and including a power supply point on both the first and second side surfaces, a first conductive surface on the first side surface, a second conductive surface on the second side surface, and a third conductive surface on the rear surface; and an antenna element including a base element coupled with the power supply point at one corner of the front surface and a branch element connected to the base element and having an end. A part of the branch element moves apart from one of the first and second conductive surfaces as it goes from the base element to the one end of the branch element. The front surface is attached to a windshield of a vehicle.