Abstract: A power steering device has a hydraulic actuator that generates steering assistance power by using hydraulic fluid fed from a pump driven by a brushless electric motor. The device controls the motor's rotation speed to have a preset steering assistance speed in a steering assistance mode, and a preset standby speed in a steering assistance release mode. The motor rotation speed is set to the steering assistance speed after being set to a maximum speed that exceeds the steering assistance speed in the steering assistance mode.

Abstract: A reaction force actuator 3 for giving reaction force to a steering wheel 2 disengaged from a steering mechanism 1 is provided. A steering control unit 4 is provided to control so that the reaction force decided in accordance with the detected results of the running speed by a vehicle speed sensor 6 and the detected results of a road surface condition by a current sensor 7a, an open air temperature sensor 7b, a wiper switch 7c and a supersonic wave sensor 7d. Also, the steering motor 5 for applying the steering force to the steering mechanism 1 is operated smaller at higher speed and larger at slower speed at running by the operation of the steering control unit 4 in accordance with the detected results of the running speed by the vehicle speed sensor 6. Therefore, the same steering feelings as those of the coupling type steering system are obtained to realize a steering system enabling the reliable steering operation to effect under the various different running conditions.

Abstract: A vehicle steering device has a steering inhibition portion that enables the steering device to be switched between a steering inhibition application mode and a steering inhibition release mode--regardless of whether or not the vehicle is being steered by a driver. This arrangement avoids the need to determine whether or not the vehicle is being steered before determining whether or not to inhibit steering.

Abstract: An electric power steering system of this invention can inform the driver of potential danger by providing control by way of safety precaution before a vehicle enters a dangerous situation. The occurrence of dangerous situations is determined based on a signal from an obstacle sensor. If a steering wheel is turned in a dangerous situation, a warning control is performed on a motor. The motor outputs a torque for t1 seconds, for example, which counters against turning of the steering wheel. Then, the motor enters a "non-assist" state wherein no current is applied thereto for t2 seconds. If an intermittent counter torque is applied by the motor, it is hard to turn the steering wheel and the steering wheel is caused to vibrate, thereby preventing the vehicle from being steered to collide with an obstacle and, warning the driver of the danger with vibration caused in the steering wheel.

Abstract: An electrophotographic lithograph printing plate material having excellent anti-toner fogging property and dimensional stability has an intermediate layer formed between a front surface of a substrate and a photoconductive layer and including a mixture of a polymeric binder, a specific dispersing agent comprising a member selected from a polyisoprenesulfonic acid and carboxylic acid-modified polyisoprenesulfonic acids, and pigment particles and electroconductive whiskers uniformly dispersed in the binder by the aid of the specific dispersing agent.

Abstract: A laser-sensitive electrophotographic lithograph printing plate material having excellent sensitivity to light having a long wavelength of from 700 to 1000 nm, a high thermal resistance and persistency, and high resistance to a change of sensitivity with time, provided with a laser-sensitive photoconductive layer formed on a substrate and comprising a photoconductive pigment; a sensitizing dye comprising at least one compound of the formula (I): ##STR1## wherein R.sup.1 and R.sup.2 are respectively --CH.sub.3, --C.sub.2 H.sub.5, or --CH.sub.2 --CH.dbd.CH.sub.2 and X is a halogen atom, an antioxidant comprising at least one member selected from radical chain terminators, peroxide-decomposing agents, and heavy metal-deactivating agents, and an electrically insulating binder.

Abstract: The present invention yields a coating film excellent in adhesion, water resistance, solvent resistance and durability. A compound having a carboxyl group and a long-chain alkylthio group or a salt thereof is used as an emulsifier and emulsion polymerization is carried out using a polymerizable monomer or monomers having, within their molecule, a group reactive with a carboxyl group as raw materials for emulsion polymerization, whereby the resin produced by emulsion polymerization and the emulsifier react with each other efficiently on the occasion of film formation and form a crosslinked structure. When a compound having a polymerizable unsaturated group in addition to the carboxyl group and long-chain alkylthio group or a salt thereof is used as the emulsifier, not only the above-mentioned crosslinked structure is formed but also the polymerizable unsaturated group in the emulsifier will react with the unsaturated group in the polymerizable monomer or monomers in the manner of grafting.

Abstract: A compound having a carboxy group and a long-chain alkylthio group and/or a salt thereof is used as an emulsifier and, on the other hand, emulsion polymerization is carried out using a polymerizable monomer or monomers having, within their molecule, a group reactive with a carboxyl group as raw materials for emulsion polymerization, whereby the resin produced by emulsion polymerization and the emulsifier react with each other efficiently on the occasion of film formation and form a crosslinked structure. When a compound having a polymerizable unsaturated group in addition to the carboxyl group and long-chain alkylthio group and/or a salt thereof is used as the emulsifier, not only the above-mentioned crosslinked structure is formed but also the polymerizable unsaturated group in the emulsifier will react with the unsaturated group in the polymerizable monomer or monomers in the manner of grafting. As a result, the compatibility between the emulsifier and the emulsion-polymerized resin is improved.

Abstract: An electrophotographic litho printing plate material which has a high storage stability and is useful for providing litho printing plates having an enhanced high quality image-forming durability, an improved printing durability, and an excellent dimensional stability, comprises (A) a substrate sheet; (B) an intermediate coating layer comprising (a) wet ground white mica fine particles having an average size of 5 to 50 .mu.m, (b) a waterproofing agent comprising an organic silane compound of the formula (1): R.sub.n SiX.sub.4-n (1) wherein n=1 or 2, R=aliphatic, cycloaliphatic, aromatic or heterocyclic radical having 1 to 30 carbon atoms, at least one R being chemically reactive, and X=hydrolyzable substituent, and (c) a thermoplastic resin binder; and (C) a photoconductive coating layer containing photoconductive pigment particles and an electrically insulating polymeric binder.

Abstract: An electric recording material comprising(A) a semiconductive resin layer comprising a resin matrix and a conductivity-imparting agent dispersed therein and having a surface resistance of more than 1 ohm to less than 10.sup.5 ohms,(B) a metal-containing resin layer comprising a resin matrix and 5 to 60% by volume of a metal powder dispersed therein and having a surface resistance of 10.sup.5 to 10.sup.16 ohms, said metal-containing layer being laminated to one surface of said semiconductive resin layer (A),(C) an electrically conductive covering layer having a surface resistance not exceeding 10.sup.

Abstract: An electric recording material comprising(A) a semiconductive resin layer comprising a resin matrix and a conductivity-imparting agent dispersed therein and having a surface resistance of more than 1 ohm to less than 10.sup.5 ohms,(B) a metal-containing resin layer comprising a resin matrix and 5 to 60% by volume of a metal powder dispersed therein and having a surface resistance of 10.sup.5 to 10.sup.16 ohms, said metal-containing layer being laminated to one surface of said semiconductive resin layer (A),(C) an electrically conductive covering layer having a surface resistance not exceeding 10.sup.

Abstract: A method for performing electric discharge recording on the recording surface of an electric discharge recording material using a discharge recording stylus comprises interposing an electrically anisotropic non-recording layer between the recording surface and the discharge recording stylus. The non-recording layer is prepared by dispersing a metal powder in a resin matrix and has a surface resistance of at least 10.sup.8 ohms and a volume resistance of not more than 10.sup.4 ohms-cm. Electric discharge recording is performed through the non-recording layer. A composite discharge recording material comprises (a) an electric discharge-breakable semiconductive resin layer having a surface resistance of 10.sup.5 to 10.sup.16 ohms and a volume resistance of 10.sup.3 to 10.sup.14 ohms-cm, (b) a metal-containing resin layer having a surface resistance of at least 10.sup.8 ohms and a volume resistance of not more than 10.sup.

Abstract: An electro-thermosensitive recording material comprising (1) a support at least the surface of which is electrically conductive, and (2) a conductive recording layer formed on the conductive surface of the support, the recording layer containing (a) a film-forming chlorine-containing polymer and (b) dispersed in the polymer, an acid-sensitive leuco dye and at least one zinc compound selected from the group consisting of zinc oxide optionally doped with a different metal, zinc hydroxide, zinc sulfide, zinc carbonate, zinc acrylate and zinc stearate.

Abstract: A method for performing electric discharge recording on the recording surface of an electric discharge recording material using a discharge recording stylus, which comprises interposing an electrically anisotropic non-recording layer between the recording surface and the discharge recording stylus, said non-recording layer being prepared by dispersing a metal powder in a resin matrix and having a surface resistance of at least 10.sup.8 ohms and a volume resistance of not more than 10.sup.4 ohms-cm, and performing electric discharge recording through the non-recording layer; and a composite discharge recording material which comprises (a) an electric discharge-breakable semiconductive resin layer having a surface resistance of 10.sup.5 to 10.sup.16 ohms and a volume resistance of 10.sup.3 to 10.sup.14 ohms-cm, (b) a metal-containing resin layer having a surface resistance of at least 10.sup.8 ohms and a volume resistance of not more than 10.sup.

Abstract: Method for producing a thermoplastic resin film or sheet useful for chelate color printing which involves contacting at least one surface of a thermoplastic resin film or sheet with a mixed liquid composition comrising (i) a liquid capable of dissolving or swelling said thermoplastic resin, (ii) a liquid having no ability to dissolve or swell said thermoplastic resin, being compatible with said liquid (i) and having a faster rate of evaporation than said liquid (i), and (iii) an inorganic compound containing at least one metal atom selected from the group consisting of iron, vanadium, titanium, molybdenum and tungsten, or an organic compound capable of forming a chelate compound with the metal atom and developing a color, and evaporating off said liquids (i) and (ii), thereby to form a porous surface layer of the film or sheet to which is adhered an uppermost chelate color printing layer comprising said inorganic or organic compound (iii).