Abstract: A liquid-discharge recording apparatus such as an ink-jet printer comprises: a liquid-discharge recording unit having an emission energy generating device including an electrothermal energy converting device which can heat a recording liquid such as an ink to form liquid droplets in response to an electrical signal, in which this recording unit emits the liquid droplets and deposits them on a recording paper and thereby recording thereon; a recording unit control circuit which can set and supplies the electrical signal to form the liquid droplets to the emission energy generating device in response to a recording signal; and an emission controller for setting the electrical signal to form the liquid droplets to the recording unit control circuit when a power supply is turned on, thereby allowing the recording unit to emit the liquid droplets in accordance with an environmental condition such as a temperature of the recording liquid.

Abstract: A liquid-discharge recording apparatus includes a recording head, an emission signal generator, and a heating signal generator. The recording head includes electrothermal energy converting elements for generating energy used to emit liquid in response to an emission signal from an emission signal generated by the emission signal generator. The heating signal generator generates an electrical signal applied to the electrothermal energy converting elements of sufficient level for heating the liquid, without discharging, during a first heating mode when power is supplied to the apparatus and for generating an electrical signal during a second heating mode, subsequent to the first heating mode, when recording begins after an interruption in power supply. In addition, a controller is provided for controlling a heater such that the heater is deactivated when the discharge opening of the recording head is capped. A liquid-discharge recording method is applied to the liquid-discharge recording apparatus.

Abstract: A process for forming a container of acrylonitrile polymers by biaxial-orientation blow-molding a preform. A preform of thermoplastic resin, mainly acrylonitrile polymers, is irradiated with an electron beam or a gamma-ray. Immediately after the irradiation, the preform is heated at 40.degree. C. or higher to reduce residual acrylonitrile monomer in the preform to 0.1 ppm or less. Then, the preform is biaxial-orientation blow molded to form a container.

Abstract: A washing/drying method, comprising: dipping a material to be washed into an aqueous solution containing a surfactant having a water repellency so that at least one molecular layer of the water repellent surfactant is attached to the surface of the material to be washed; and then drying the material according to a known drying method such as vacuum drying, shaking off, blowing with gas and heating; or heating the material to be washed with steam at a temperature of less than 100.degree. C. in an atmosphere reduced to a pressure such that the boiling point of water becomes less than 100.degree. C.; and then drying the material according to a known drying method such as vacuum drying, shaking off, blowing with air, and heating.

Abstract: An ion thruster is operable in an interplanetary space with plasma generated by microwaves in a propellant atmosphere. A vessel defines first, second and third hollow spaces and a window between the first hollow space and the second and third hollow spaces, the second hollow space having an opening. A microwave generating unit generates the microwave in the first hollow space as a standing wave penetrating into the second and thid spacers hollow. A propellant supplying unit supplies the propellant into the second and third hollow spaces, the propellant serving as a main and neutralizing propellant and absorbing the standing wave to produce main plasma comprising main ions and main elecrons. An accelerating unit accelerates only the main ions into an ion beam to inject the ion beam through the opening into the interplanetary space. A neutralizing unit defines a third space which is in communication to the first space and into which the standing wave penetrates.

Abstract: A residual ink quantity detecting apparatus for detecting a residual quantity of ink in a supply source of ink for supplying ink to an ink-jet printer comprises a deviation member, which is connected to an ink supply path extending from the supply source, constitutes part of the path and can be deviated upon change in pressure in the path, an adjusting member for adjusting a deviation of the deviation member in order to set a pressure at which the deviation member is deviated and a detection unit for detecting the deviation of said deviation member.

Abstract: A process for hot working a tubular material having one open end and the other closed end including the steps of: injecting an inert gas into the hole of the material; then fastening a cap to the open end of the material in order to hermetically seal the hole; then heating the material and concurrently subjecting same to forging or the like. Then, the end to which cap has been fastened is separated from the remainder of the material, so that a final product results. The process has an advantage in that it easily, inexpensively prevents a layer transmuted due to heating from occurring in the surface of the hole.

Abstract: A liquid injection recording apparatus having a recording head for injecting ink toward a recording medium to thereby effect recording, an ink tank storing therein ink to be supplied to the recording head, and an ink remain detector provided within a supply path communicating the recording head with the ink tank are presented. The ink remain detector has an ink chamber having at least one wall surface thereof formed of a flexible film member, and at least two detector means responsive to the displacement of the film member.

Abstract: A method for removing a pyrogen from a pyrogen-containing sample solution, which comprises adding a calcium salt to the sample solution and separating the resulting precipitates.

Abstract: This invention discloses an AM stereo transmission method characterized in that when left and right audio signals L and R are transmitted as an AM stereo signal which is represented by S=A cos(.omega.t+.phi.) wherein A denotes an amplitude, .omega. a carrier angular frequency and .phi. a phase angle given by tan.sup.-1 (L-R)/1+L+R, the audio signal of low frequency is transmitted at an amplitude A=(1+L+R), and the audio signal of high frequency is transmitted at an amplitude A=.sqroot.(1+L+R).sup.2 +(L-R).sup.2. The modulator according to the present invention comprises a matrix circuit for providing signals (L+R) and (L-R), an orthogonal modulator to produce an AM stereo signal .sqroot.(1+L+R).sup.2 +(L-R).sup.2 cos(.omega.t+.phi., an amplitude controller, an amplitude control signal generator circuit and a low-pass filter. In the modulator the said AM stereo signal S is changed to the signal (1+L+R)cos(.omega.t+.phi.) for audio signal of low frequency by controlling the amplitude controller.

Abstract: A method for producing of a polybutylene terephthalate by reacting a dicarboxylic acid component containing terephthalic acid as a main constituent directly with a glycol component containing 1,4-butanediol as a main constituent to form an esterification reaction product and subjecting the esterification reaction product to a polycondensation reaction, characterized in that 0.4 to 1.3 mole of 1,4-butanediol per mole of terephthalic acid is added in the presence of an esterification catalyst which is at least one member selected from the group consisting of titanium compounds and tin compounds, to start said esterification reaction and thereafter a required amount of 1,4-butanediol is supplied additionally to complete the esterification reaction.

Abstract: A cold rolled steel strip having an elevated temperature is continuously cooled to a desired temperature at a desired cooling rate by a process comprising moving the cold rolled steel strip along at least one vertical cooling path, and; bringing a plurality of streams each consisting of a mixture of a cooling gas and a cooling liquid into contact with each surface of the steel strip, each mixture stream being prepared by jetting the cooling gas and liquid independently from others in directions intersecting each other before the vertical path of the steel strip.

Abstract: The invention provides catalysts for the catalytic cracking of heavy oil, comprising an iron-containing crystalline aluminosilicate zeolite. This crystalline aluminosilicate zeolite is obtained by treating a raw crystalline aluminosilicate zeolite material with an acidic solution containing iron ions, or alternatively, by applying a steam treatment and, thereafter, treating with an acidic solution containing iron ions. The use of the catalyst provides a gasoline fraction having a high octane value and an intermediate fraction from heavy oil in high yield.

Abstract: Disclosed is a flame retardant polyamide composition having desirable mechanical, electrical and processing properties, and therefore, being useful for producing parts of electric and electronic devices and appliances. The composition comprises a polyamide resin matrix and 1 to 40%, based on the weight of the polyamide matrix, of a flame-retarding agent in the form of fine particles dispersed in the matrix. The composition is characterized in that the flame-retarding agent consists of at least one member selected from:(A) crystals of addition salts of cyanuric acid or isocyanuric acid with melamine, and;(B) mixed crystals of addition salts of cyanuric acid or isocyanuric acid with a mixture of melamine and acetoguanamine in an amount by mole not larger than that of the melamine.

Abstract: An exhaust gas purification control apparatus for an internal combustion engine wherein vacuum signals applied to air fuel mixture control, exhaust gas recirculation control, and ignition timing control are modified by a vacuum signal modifier. The vacuum signal modifier is operative in response to a pressure signal applied thereto. This pressure signal is produced by a pressure signal control device by diluting a venturi vacuum with air.

Abstract: A gas-liquid cooling apparatus having a group of gas jet nozzles and a group of liquid jet nozzles so that the gas jet stream from the gas jet nozzles intersects with the liquid jet stream from the liquid jet nozzles at an acute angle so as to form a gas-liquid mixture, the improvement comprising a liquid guide means for collecting the liquid which is separated from the gas-liquid mixture and which is reflected from a material to be cooled and for carrying the collected liquid away from the material.

Abstract: Impact-modified and moldability-improved polyethylene terephthalate molding compositions are provided which comprise polyethylene terephthalate resins, a copolymer of .alpha.-olefins and glycidyl esters of .alpha.,.beta.-ethylenically-unsaturated carboxylic acids and barium salt of fatty acids. Glass fiber reinforcement of the polyester compositions is preferable because of further enhancement of the moldability of the polyester composition thereof. In addition, resistance to moist heat is also increased.

Abstract: A method of controlling steel strip temperature in a process of continuously heating steel strip in heating equipment having a preheating zone and a rapid-heating zone. The preheating zone has a number of gas-injecting preheating units that can be individually put into and taken out of operation. In normal operation, the in-operation length of the preheating zone is prefixed irrespective of strip thickness, and the temperature of the rapid-heating zone is preset depending on the strip thickness so that the strip acquires the desired temperature at the exit end thereof. In such operation, the strip is preheated in the preheating zone of the prefixed in-operation length and rapidly heated in the rapid-heating zone at the preset temperature. In irregular operation, such as treating a following strip the thickness of which has changed, the temperature of the rapid-heating zone is changed from the preset one to a second one optimum for the following strip.

Abstract: In a shift mechanism for an automotive transmission of the type wherein the lower end of a shift lever is coupled through a control rod to a control shaft of the automotive transmission, means for pivotally supporting the shift lever for the select and shift operations is mounted on a parallelogram double rocker linkage consisting of a pair of parallel rockers the upper ends of which are pivoted to a chassis and a coupler the both ends of which are pivoted to said pair of parallel rockers in such a way that the line connecting between the pivotal points of the coupler may be in parallel with the line connecting the upper pivotal points of the pair of parallel rockers and that the parallelogram double rocker linkage pivots about said upper pivotal points of the pair of parallel rockers in a vertical plane in parallel with the axis of the control rod; and the lower end of one of the pair of parallel rockers is pivoted to one end of a support rod which extends in parallel with the control rod and which has its t

Abstract: A multi-cylinder internal combustion engine includes, per each of a plurality of cylinders, a main combustion chamber, an auxiliary combustion chamber in which ignition is effected by means of a spark plug and a torch nozzle through which a torch flame resulting from combustion within the auxiliary combustion chambers enters the main combustion chamber to initiate combustion therein. An engine head of the engine has a plurality of exhaust passageways, corresponding in number to half of the plurality of cylinders. Each of the plurality of exhaust passageways has a discharge port, to which an exhaust manifold is connected, and extends from the discharge port to two of exhaust valves which are arranged next to each other. Within each of the plurality of exhaust passageways, a port liner is installed to keep exhaust gas flowing along the exhaust passageway warm.