摘要:
When in use a highly luminous automobile discharge lamp will experience a temperature rise to about 700.degree. C. at the lamp glass surface. As such, the light-screening film formed on the lamp will also be exposed to a temperature of 700.degree. C.; the temperature of the glass surface of a lamp rises and, accordingly, that of the light-screening film formed thereon also rises. Especially with a highly luminous automobile discharge lamp, the temperature of the lamp glass surface rises to about 700.degree. C. during the lighting. Necessarily, the light-screening film on the glass surface is also exposed to a temperature of 700.degree. C. As such, a light-screening film material free of discoloration or peeling even after exposure to a temperature of 700.degree. C. has been desired. There is disclosed a light-screening film paint for lamps containing (1) at least one compound of either manganese oxide or an iron oxide compound doped with a metallic manganese and having the formula (Fe.sub.x Mn.sub.1-x).sub.2 O.sub.3 where 0.95>x>0.70; and (2) powder glass containing at least one of silica, zinc oxide, boron oxide and aluminum oxide. A light-screening film is produced by applying the paint to the surface of a lamp, followed by the firing at a temperature of not higher than 1,200.degree. C.
摘要:
A cylindrical battery having a high utilization rate and a high discharge capacity rate is disclosed. It has an electrode group configured by rolling up two sheet electrodes of opposite polarity in spiral fashion interposing a separator therebetween, wherein one of the electrodes is provided with a porous metal substrate having a higher porosity layer and a lower porosity layer which has a considerably smaller thickness than that of the higher porosity layer, and an active material filled substantially in the spaces of the higher porosity layer of the porous metal substrate.
摘要:
In a copying processing performed several times from the depression of a copy button of a copying machine until the surface potential of the photoreceptor drum is stabilized, a voltage sufficiently high for correcting the rise characteristic of the photosensitive layer on the drum surface is applied to a charger. A main circuit having a controlling portion to realize this corrects the output voltage of the high-voltage generating circuit which applies a high voltage to the charger to a voltage value necessary for the drum surface to be charged at a stable potential level. The main circuit charges the drum surface at the stable potential level necessary for development from copying of the first sheet.
摘要:
An electrical power supply system includes an electrical power source system connected to a bus bar and a plurality of electric power transmission systems each connected via circuit breakers to the bus bar. The supply system has overvoltage suppression equipments each installed between the transmission system and the ground. The overvoltage suppression equipment includes a switching device and an impedance connected to the switching device. The switching device in a sound transmission system is closed when the circuit breaker operates in other faulty transmission system, thereby an overvoltage being occurred on the sound system is effectively suppressed.
摘要:
A tape cassette for accommodating a reeled length of magnetic recording tape comprises a generally rectangular flattened box-like configuration. The cassette has top and bottom panels, front and rear wall and a pair of side walls. The front wall has a head access window and a pair of pinch roller access windows all defined therein. While a portion of the length of magnetic tape extends in the vicinity of and parallel to the front wall, tape cleaners are secured to front wall portions defined between the head access window and the pinch roller access windows so as to slidingly contact that portion of the length of magnetic recording tape as the latter is transported from one reel to the other reel. Each tape cleaner may be a fiber-intertwined cleaning member made of non-woven fabric or a fiber-tufted cleaning member made of crimped or curled fibers closely planted on a backing. With the fiber-intertwined cleaning members, that portion of the length of magnetic recording tape that is held in sliding contact with an intermediate portion of each fiber-intertwined cleaning member is rearwardly biased a predetermined bias distance within the range of 0.5 to 1 mm. With the fiber-tufted cleaning members, that portion of the length of magnetic recording tape that is held in sliding contact with an intermediate portion of each fiber-intertwined cleaning member is rearwardly biased a predetermined bias distance within the range of 0.1 to 1 mm.
摘要:
A gas-insulated stationary induction electrical apparatus comprising a first closed vessel sealingly accommodating therein a main body having an iron core formed by laminating silicon steel sheets and also having at least one set of windings each consisting of a high-voltage winding and a low-voltage winding which are disposed apart from the iron core on both sides thereof, and a liquid medium for effecting cooling and insulation; a second closed vessel formed of an insulating material and sealingly accommodating therein the first closed vessel; and an insulating gas under a predetermined pressure which is sealed within the gap between the first and second vessels, wherein the induction apparatus main body is submerged in the liquid medium.
摘要:
An electrolytic processing device in which either or both surfaces of a belt-shaped metal plate can be selectively subjected to an electrolytic process. In a first electrolytic processing operation wherein only one surface of the belt-shaped metal plate is subjected to processing, an electrical insulating member is disposed between the belt-shaped metal plate and a first group of electrodes arranged over the surface of the belt-shaped metal plate to thereby suppress the flow of current between the belt-shaped metal plate and the first group of electrodes. In a second electrolytic processing operation in which both surfaces of the belt-shaped metal plate are subjected to processing, the electrical insulating member is removed from the position between the electrodes and the belt-shaped metal plate to thereby allow current to flow from the electrodes to both surfaces of the belt-shaped metal plate.
摘要:
In a process for producing a rubbery olefinic copolymer which comprises random-copolymerizing at least two olefins in the presence of a catalyst composed of (A) a titanium compound and (B) an organometallic compound of a metal of Groups I to III of the periodic table, the improvement wherein the titanium compound (A) of the catalyst is a solution of a solid titanium halide in a hydrocarbon solvent, a halogenated hydrocarbon solvent or a mixture of both, said solid titanium halide being rendered soluble in said solvent.
摘要:
In a spray nozzle including a nozzle structure having an internal chamber and an injecting hole provided through the nozzle structure at an outer end thereof, a control rod is provided in the internal chamber so that the outer end of the control rod projects outwardly through said injecting hole. A planar disc-shaped member is secured to the inner end of the control rod for defining a movable range in the axial direction of the same rod. A spring member is provided around the same rod for urging the rod inwardly, and a nozzle-tip member is secured to the outer end of the control rod for closing the injecting hole from outside. An apparatus utilizing the spray nozzle is further disclosed.