摘要:
A magnetic recording medium which comprises a non-magnetic substrate, a magnetic recording layer formed on one side of said substrate, and a back coat layer formed on the other side of the substrate. The back coat layer is made of a composition which comprises particles of carbon black, titanium monoxide or a mixture thereof having an average size not larger than 1 micrometer and a resin binder dispersing the particles therein. The particles are individually precoated with an isocyanate compound. When coated titanium monoxide particles are used singly, non-coated carbon black is effectively used in combination.
摘要:
A magnetic recording medium comprising a non-magnetic support, a magnetic recording layer formed on one side of the support, and a back coat layer formed on the other side. The back coat layer is formed of a composition which comprises a dispersion, in a resin binder, of carbon black having a pH of 2.0 to 8.5 and a coloring power not less than 90 as determined by the ASTM method. The dispersion may further comprise a specific type of aliphatic acid-modified, fluorinated organosilicone in order to improve the travellability and durability of the medium.
摘要:
A magnetic recording medium comprises a back coat layer on one side of a non-magnetic support which is opposite to a side on which a magnetic recording layer has been formed. The back coat layer is made of a composition which comprises, in a resin binder, carbon black treated with a fatty acid of the formula, RCOOH, in which R represents a linear saturated or unsaturated hydrocarbon having from 13 to 17 carbon atoms. The medium is particularly suitable for high density recording.
摘要:
A magnetic recording medium of the type which comprises a non-magnetic substrate and a magnetic recording layer formed on the substrate. The magnetic recording layer is made of a dispersion of magnetic powder in a binder and a lubricant which is a reaction product of a monobasic fatty acid and a monohydric alcohol in a molar ratio of 1:0.3 to 1:0.8.
摘要:
A semiconductor laminating portion including a light emitting layer forming portion having at least an n-type layer and a p-type layer is formed on a semiconductor substrate. A current blocking layer is partially formed on its surface. A current diffusing electrode is formed on the entire surface thereof. A bonding electrode is formed thereon. The semiconductor laminating portion and the current diffusing electrode are separated into light emitting unit portions A, electrode pad portion B, and connecting portions C for connecting between electrode pad portion B and light emitting unit portions A or between two of the light emitting unit portions A, and the semiconductor laminating portion between the light emitting unit portions A is removed through etching to make clearances except for connecting portions C. The bonding electrode is formed on electrode pad portion B.
摘要:
A semiconductor light emitting device is formed by adhering a semiconductor layered portion having a light emitting layer forming portion to a conductive substrate via a metal layer. The metal layer has at least a first metal layer for ohmic contact with the semiconductor layered portion, a second metal layer made of Ag, and a third metal layer made of a metal which allows adhesion to the conductive substrate at a low temperature. As a result, the rate of reflection of light from the metal layer increases due to the presence of Ag in the metal layer. Further, the metal in the metal layer is prohibited from diffusing into the semiconductor layer, so that the semiconductor layer does not absorb light. And therefore the brightness of the semiconductor light emitting device can further be increased.
摘要:
A fuel injection control system for an internal combustion engine comprises a plurality of fuel injector valves, a pumping system having a suction valve, a discharge valve, and a high-pressure pump section sucking fuel into a pressurized chamber with the suction valve opened on a suction stroke and for discharging the fuel in the pressurized chamber toward the injector valves with the discharge valve opened on a discharge stroke. A relief passage is connected, at one end, to a lowpressure line upstream of the suction valve. The other end of the relief passage is connected to the pressurized chamber. A fuel-pressure control valve is disposed in the relief passage for regulating a fuel pressure of the fuel injected from each of the fuel injector valves by opening the fuel-pressure control valve only for a specified time duration from a controllable middle stage of the discharge stroke to the end of the discharge stroke.
摘要:
A bidirectional signal distributing system which can use a sweet sleep system at home without exerting a burden on a subscriber so as to purchase the sweet sleep system. Luminance change frequency data and/or audio change frequency data suitable to shift to a sweet sleep state of the subscriber has been stored in a head end apparatus in the bidirectional signal distributing system. When the subscriber requests a sweet sleep function, the luminance change frequency data and/or audio change frequency data according to the subscriber provided on the head end side is read out, a predetermined video signal and/or audio signal is modulated, and the modulated signal is transmitted to the subscriber apparatus.
摘要:
Two kinds of hydrolyzed protein having different characteristics respectively are obtained by hydrolyzing soy protein with protease and separating the mixture of hydrolyzed products using their solubilities in a 5% trichloro acetic acid aqueous solution as the guidance of the separation.The hydrolyzed protein of the low solubility possesses excellent emulsifying properties, and the one of the high solubility possesses excellent foaming properties.
摘要:
A magnetic recording medium of the type comprising a non-magnetic substrate and a magnetic recording layer formed on at least one side of the substrate. The magnetic recording layer comprises particulate alpha-Fe.sub.2 O.sub.3 and carbon black as additives dispersed in a resin binder along with a magnetic powder. These additives serve to improve magnetic characteristics and a ilght-shielding property. When vinyl chloride-vinyl alcohol copolymers are used as the binder, further improvements are achieved.