Abstract: The present invention relates to a method for purifying N,N-dimethylaminopropylamine containing 1,3-diaminopropane as an impurity. Dimethylaminopropionitrile is formed by adding dimethylamine to acrylonitrile, and is then converted by subsequent hydrogenation and distillation into N,N-dimethylaminopropylamine. The impurity 1,3-diaminopropane is removed by adding a metal salt of a transition element which forms a stable complex with the 1,3-diaminopropane.

Abstract: This invention relates to an objective lens for regenerating a video disc or the like. A semiconductor laser is used as a light source to directly drive an objective lens for carrying out tracking, and thus the lens must be small and light-weight, but the aberration on the optical axis could well be corrected. However, because of small-size of lens, a manufacture error such as eccentricity is greatly affected. A positive meniscus lens on the image side is approximated to a concentric configuration by an objective lens comprising two lenses whereby the influence resulting from eccentricity may be minimized.

Abstract: In order to improve the combustion of diesel engine fuels, mixtures of neutral salts of carboxylic acids and metals of Atomic Nos. 57 to 71 and free carboxylic acids are added thereto.

Abstract: The present invention relates to the stabilization of a carbonaceous combustible solid-diesel fuel suspension by inclusion therein of wax-like polymers in an amount of at least 0.2% by weight of the stabilized suspension. The polymers preferred are homopolymers of .alpha. -olefins, and copolymers of ethylene and at least one other monomer copolymerizable therewith wherein the ethylene portion constitutes at least 60% by weight of the copolymer.

Abstract: An automatic film winding mechanism and method generates a series of pulses for each unit movement amount of the film, computes the speed of the film advancing movement, compares the speed to a stored look-up table for determining the precise point at which power to the film drive motor should be shut off, in order to have the advancement of the film come to a complete stop at a predetermined film transport distance. The invention thereby allows the film to be advanced to the exact transport distance regardless of the output and voltage fluctuation of the film drive power source, or of the film variation or load variation of the motor caused by a change in ambient temperature or other conditions.

Abstract: A toner for developing an electrostatic latent image comprising a resin prepared by emulsion polymerization of a first polymer to yield a first emulsion, emulsion polymerization of a second polymer to yield a second emulsion, mixing said first and second emulsions and coagulating said mixture, wherein said second polymer has characteristics different from those of said first polymer.

Abstract: A developing device for use in an electrophotographic copying machine or electrostatic recording apparatus includes a stirring blade for mixing the developer. The driven shaft driving the stirring blade is intermittently revolved in a reverse direction to the main driving shaft directly connected to the developing sleeve by a mechanism incorporated between the main shaft and the driven shaft.

Abstract: A nitrosourea compound of the formula: ##STR1## wherein R.sup.1 is lower alkyl and R.sup.2 is lower alkyl or lower alkoxy-lower alkyl, which may be prepared by nitrosation of a compound of the formula: ##STR2## wherein R.sup.1 and R.sup.2 are the same as defined above. Said nitrosourea compound is useful as an anti-tumor or anti-leukemic agent.

Abstract: An electrostatic recording apparatus comprising an ion modulator, a driving circuit for transforming a first image signal into a second image signal and for applying said second image signal to the ion modulator, a member for forming electrostatic latent image, and a photon coupled isolator. A voltage of the second image signal is higher than a voltage of the first image signal. The first image signal is supplied to the driving circuit through the photon coupled isolator. The ion modulator is a multilayered ion modulator comprising a layer of insulating material, a continuous layer of conductive material and a segmented layer of conductive material on the other side of said insulating layer. Each segment of the segmented conductive layer is insulatively isolated from each other segment. The multilayered ion modulator has at least one of row of apertures formed therethrough. A segment of the segmented conduction layer is formed around each aperture.

Abstract: The present invention relates to a process for producing ethanol and n-propanol by reacting methanol with carbon monoxide and hydrogen at elevated pressure and temperature. A system consisting of a cobalt compound, a ruthenium compound, an iodide, and an organic phosphine serves as the catalyst. The organic phosphine contains a group having a --SO.sub.3 M, --COOM or --OSO.sub.3 M radical.

Abstract: A circuit for indicating the current or existing composite operating states of a plurality of switches switchable between open and closed states, and all normally disposed in a first of those states, includes a resistance of predetermined value for and connected to each switch, and connections between all of the switch-resistance combinations to form a switch assembly which outputs a total resistance uniquely defined in accordance with the particular existing open and closed states of the plural switches. A constant current source supplies a constant current to the switch assembly so that the assembly outputs a voltage in accordance with the unique resistance, and a voltage discriminator receives the voltage output and generates a corresponding output indicative of the existing operating states of the switches.

Abstract: An apparatus for producing custom orthotics includes a boundary wall encompassing a substrate pad and an overlying elastic skin to form an expandable interior chamber into which high density molding material is injected. A matrix of axially movable drive pins project through the pad and are urged upwardly into contact with the arch of the individual's foot to maintain the foot in properly aligned position during fabrication of the orthotic, the drive pins carrying a support bridge driven into conforming contact against the arch of the foot.

Abstract: This invention relates to a novel lifter construction for rolling filled cans. It is designed to allow a lifter plate to effect relative rotation with respect to a lifter body to be forcibly driven in order to introduce the merits of the free rotation system into a lifter of prior art forced driving system. To this end, there is proposed a construction wherein the lifter plate is driven by a clutch and the clutch is disengaged with lifter pressure, and a construction wherein the lifter plate may be rotated through a given angle on the plate supporting bed. Preferably, a detector is provided to detect an abnormal rolling of cans or the like.

Abstract: An electrophotographic reproducing machine in which the bias voltage applied to the sleeve is set at such a level as to substantially nullify the developing current which is produced as a result of induction of charge in the developer in accordance with the potential of the electrostatic latent image when the document is a blank. The setting of the bias voltage is made in accordance with an electrostatic latent image formed as a result of the projection of a leading projecting portion provided on a document glass plate in contact with the document mounting position, the projection of the leading projecting portion being made in advance to the projection of the image on the document to form the electrostatic latent image of a potential substantially equal to that corresponding to the blank portion of the document.

Abstract: The invention is directed to an arrangement for simply and inexpensively attaching semirigid coaxial cable to suitable connectors in which the connector is provided with a sleeve having either internal fluting or cross threads. The effective internal diameter of the sleeve is only slightly greater than the external diameter of the outer conductor of the semirigid cable so that when the sleeve is crimped the flutes and/or threads bite into the outer conductor to form a connector-cable bond sufficiently resistant to pull-off, twisting and slipping, while at the same time forming a joint having an acceptably low radio signal power leakage through the crimped interface and so little dimensioning effect on the cable that transmission losses due to internal reflections are maintained acceptably low.

Abstract: A photosensitive composition containing an o-naphthoquinonediazido compound of Formula I ##STR1## wherein X is an oxy or amino group, Y is a cyano or nitro group, and n is an integer of 2 to 5, and an organic dye capable of changing its color when the photosensitive composition is exposed.

Abstract: The apparatus includes a vertically movable paper tray that descends to its lowered condition when a copier door is opened for resupply of copy sheets, a switch for detecting the fully raised sheet feeding condition of the tray, and a photosensor for detecting the presence of paper on the tray as the tray is raised toward its fully raised condition. A copier operation enabling signal is generated in response to the position of the door and the photosensor output, with a suitable time delay to prevent copying until the tray has attained its fully raised condition following detection of the presence of paper by the photosensor.

Abstract: A copying machine comprising an image signal generating unit including a solid image pickup element for converting an optical image into an electric signal; an ion generating source; and an electrostatic image forming unit including an ion control electrode. The ion control electrode has a control electrode and a common electrode arranged to face each other through an insulating layer and formed with fine openings arranged in a row or in plural adjacent rows. At least one of the electrodes being divided into such a plurality of blocks as has its one or plural openings electrically insulated at a close spacing across the aforementioned arranged openings and as are wired to receive electric signals from the aforementioned image signal generating unit, the common electrode being operative to control the flow of ions, which are directed toward a charge holder, if necessary, together with the control electrode in response to a bias voltage applied.

Abstract: A variable illumination flash apparatus includes a main capacitor in parallel with a flash lamp and power source for normally supporting triggered discharge illumination of the lamp. A plurality of secondary circuits each containing a series-connected silicon controlled rectifier and secondary capacitor are disposed in parallel with the main capacitor and are individually selectively actuatable to store additional electric charge for further supporting lamp illumination. Each secondary circuit is actuated only when additional illumination is required for a subequent flash operation, thereby promoting efficient conservation of the power source in that no power is drawn from the source and stored in the capacitors unless needed for the immediately subsequent flash operation.

Abstract: Magnetic recording medium having a non-magnetic support carrying a magnetic layer, the layer comprising a ferromagnetic powder, a binder, and a Nitrogen containing compound, which is able to complex with Iron ions wherein the stability constant of the Nitrogen compound and Iron ions is at least 15.