Abstract: A photographic exposure apparatus includes a lamp housing for a metal-halide discharge lamp for exposing a light-sensitive film to an image-bearing sheet when the lamp is energized to full power, a shutter for closing the lamp housing while the lamp remains energized at a lower power level in stand-by condition, and a control unit for energizing of the lamp in standby condition in such a way that, while being maintained at reduced power, the lamp is intermittently energized at high power during short intervals, e.g. in pulses, to thereby substantially prolong the working life of the lamp.

Abstract: Photographic image-forming apparatus with replaceable cassette which comprises an exposure station for the imagewise exposure of a photographic silver halide emulsion layer element, a developing station wherein a silver halide developer liquid is applied to said imagewise exposed element, and a fixing station wherein a silver halide fixing agent is applied to the imagewise exposed element, and driving means for transporting the element through the stations, wherein at least the developing station (36) is incorporated into a processing cassette (35, 91) that contains developing liquid and removably fits into said apparatus, said cassette houses absorption means (40) effective for absorbing unused developer liquid brought into contact therewith, and the apparatus comprises means (78, 79, 80) operable in association with the processing cassette for bringing unused developer liquid in the cassette into contact with said absorption means when the cassette is removed from the apparatus.

Abstract: Particulate toner material for use in the development of latent electrostatic images, wherein said particulate toner material is capable of acquiring by triboelectric contact electrification when in admixture with carrier particles a net positive charge and contains at least one thermoplastic resin as binder in combination with a colorant and a colorless compound capable of imparting a positive charge to the particulate toner material when in frictional contact with said carrier particles, characterized in that said colorless compound contains in it molecular structure at least one polyalkyl substituted piperidine group and a sterically hindered phenol group.

Abstract: Chronic herpes viral infections, including chronic genital herpes caused by the herpes simplex virus, Type 2, and chronic infections due to the Epstein-Barr virus, chronic fatigue syndrome, chronic inflammatory connective tissue disease, including rheumatoid arthritis and systemic lupus erythematous and related diseases, and multiple sclerosis are treated by the administration via a pharmacologically effective route of an essentially pure opiate receptor antagonist, preferably an essentially pure opiate receptor antagonist exhibiting a substantially higher blocking effectiveness against Mu opiate receptor sites than against Delta receptor sites, exemplified by naltrexone and naloxone, at a low dose concentration, corresponding to about 1-10 mg per day for naltrexone, at which concentration Delta blocking activity is small, while Mu blocking activity is significant.

Abstract: In a liquid crystal display wherein a liquid crystal material is contained in a gap defined between two surfaces, at least one of the said facing surfaces of the gap is constructed by a multi-color relief layer obtained by the color-development of a single hydrophilic colloid silver halide emulsion layer. The relief layer has different regions of multiple different thicknesses corresponding to the plurality of colors thereof, the thickness of each such relief region being characteristic of the particular color of that region. Each different relief region contains a dye of the corresponding color derived from a color coupling agent by the color development and a diffusion-resistant colorless compound derived from a colorless coupling agent by said color development. The colorless compound is present in each relief region in an amount which is different from that in each other relief region and is characteristic of that region.

Abstract: Dry toner development of an electrostatic charge pattern on a recording surface is carried out with a dry toner layer formed on a donor member by electrostatic attraction resulting from a DC voltage applied across a gap between the surface of the donor member 22 and the surface of an upstream electrically conductive member 16 covered with a mixture of triboelectrically charged toner particles and magnetic carrier particles, the latter with adhering toner particles being attracted to the electrically conductive member surface by magnetic force and forming thereon a magnetic brush. The DC voltage in the gap causes selective attraction of the toner particles free of magnetic carrier particles and an AC voltage of lower peak magnitude can be superimposed on the DC voltage to set the particles in the gap in vibration and facilitate transfer across the gap.

Abstract: A method for processing an imagewise exposed photographic silver halide emulsion material using a receptor element for complexed silver halide which element contains a stabilizing agent corresponding to one of the following general formulae (I) or (II), tautomeric structures or a precursor form thereof: ##STR1## wherein: X represents hydrogen, alkali metal, ammonium or organic amine,Z represents the non-metallic atoms necessary to form a 5- or 6-membered heterocyclic nucleus, andeach of R.sup.1 and R.sup.2 (same or different) represents hydrogen, amino, alkyl, alkenyl, cycloalkyl, aryl, alkoxy, alkylthio, alkylsulfonyl, sulfamoyl, acyl, --SH or a heterocyclic group.

Abstract: A method for dot-size correction or modification in half-tone colour separations to be used in the production of printing plates for printing reproductions of coloured originals in which a contact print is overexposed through a photographic mask constituted so as to isolate a selected area in addition to being exposed normally for obtaining an exact copy of an original half-tone separation. The mask is generated electronically using an electrical signal obtained by scanning each separation, digitizing each signal and storing the digital values in a digital storage device. A halftone separation is visualized electronically as an image in a dislay device, e.g., video tube, an area of said image is defined for isolation and correction and the combination of positive and/or negative separations required to serve as a mask effective for isolating the selected area for purposes of dot evaluation is determined via a look-up table.

Abstract: A light source is associated with the oscillating pendulum of a case clock to be energized during operation of the pendulum to achieve a striking ornamental effect as the light source moves with the oscillating pendulum.

Abstract: The lipid content, i.e. "cane wax", is extracted from cane molasses by the steps of:(a) adjusting the cane molasses with sufficient alkali to pH 8.0 and 12.4;(b) adding to the pH adjusted molasses a lower alcohol in an amount to provide an alcohol concentration in the range of between 85 and 60 Vol % while heating to 60.degree. C..+-.10.degree. C., and removing the resultant residual solids as a sludge to yield a clarified liquid;(c) reducing the alcohol concentration of the clarified liquid to 50-15 Vol %;(d) adjusting the temperature of the resultant liquid to 45.degree. C..+-.10.degree. C. and then cooling the same to a temperature 20.degree. C..+-.15.degree. C. and efficient to precipitate the lipids therefrom; and(e) recovering the precipitated lipids routinely by isolation or filtration.

Abstract: Process for the production of a photographic mask for tonal correction by dry dot etching wherein the selection of a particular halftone color separation image or overlaying registering combination of halftone color separation images used in a known process of mask production is not determined on the basis of the subjective attribute of color, i.e., hue, those areas to be color corrected, but is determined on the basis of optical density differences in at least one such halftone color separation, i.e., differences in contrast, between each area to be isolated as a substantially transparent area, and at least one particular background area surrounding each area to be isolated. The density differences can be compared between individual isolated areas and associated background areas directly or as the algebraic sums of such differences for a plurality of such areas. The calculation of the density differences and their comparison can be carried out by a computer.

Abstract: A light-tight magazine for dispensing recording sheets one by one from a stack in which the sheets are separated from each other by intervening spacing foils (17), the spacing foils being held against removal from the magazine by means of ear portions (20, 21) that protrude laterally beyond the sides of the stack and are engaged by means of fixed abutment walls (27, 28) in the magazine interior.

Abstract: A process of making biaxially oriented polyethylene terephthalate photographic film having a controlled amount of curl in the longitudinal direction, wherein the file is subjected to longitudinal stretching while being asymmetrically heated across its thickness, then wound into a stock roll, and the stock roll thus obtained is heat-tempered. The stock roll after heat-tempering may be longitudinally slit, cut and rewound into smaller rolls in a winding direction opposite to the direction of the longitudinal curl induced in the film during the longitudinal asymmetrical heat-stretching.

Abstract: A potentiometer used with a voltmeter has an impedance transformer to which a voltage to be measured is applied, a bank of resistors acting collectively as a variable resistor and having switches connected in parallel across the respective resistors of the bank, a switch control circuit, and a multiplier-setting circuit, all connected in series. The resistors have resistances r, 2r, 4r, 8r, . . . , 2.sup.n-1 r or 10.sup.0 (r, 2r, 4r, 8r), 10.sup.1 (r, 2r, 4r, 8r), . . . , 10.sup.n-1 (r, 2r, 4r, 8r), where r is a minimum, or unit, resistance value. The unit resistance value r multiplied by a multiplier N of two or more digits is equal to the resistance value of the variable resistor bank.

Abstract: A laminate is produced by bonding together two hydrophobic thermoplastic resin sheets at least one of which carries at least one hydrophilic colloid layer containing a photograph and/or other information on its inner side, by the steps comprising:(1) treating such information-bearing hydrophilic colloid layer with an aqueous composition containing a self-cross-linkable reaction product of:(i) an epihalohydrin or an Alpha-dihalohydrin,(ii) a water-soluble polyamide, and(iii) a water-soluble polyamine containing at least two nitrogen atoms separated by at least three carbon atoms and optionally also by at least one oxygen or sulphur atom and having at least two hydrogen atoms attached to different nitrogen atoms,(2) drying thus treated layer, and(3) applying heat and pressure to bond the hydrophobic resin sheets together with such hydrophilic colloid layer sandwiched there-between.

Abstract: A synthetic Class C fly ash results from a substantially homogeneous blend of about 40-60% by weight of a Class F fly ash and about 60-40% by weight of cement kiln dust (CKD). This new fly ash can replace about 25-50% by weight of portland cement in conventional formulations with coarse and fine aggregate for making general purpose concrete and particularly ready-mix concrete with comparable compressive strength and like properties.

Abstract: Particulate toner material for use in the development of latent electrostatic images, wherein said particulate toner material is capable of acquiring by triboelectric contact electrification a net positive charge and contains thermoplastic resin(s) as binder in combination with a colorant and a colorless compound capable of imparting a positive charge to the particulate toner material in contact electrification, wherein said colorless compound contains at least one piperidine nucleus substituted with an --NH-acyl group, N-substituted ureido or N-substituted thioureido group.

Abstract: The location of an aperture surrounded by a region of different brightness on a plane surface is achieved by line scanning the surface with an optical scanner while shifting the line position stepwise in an orthogonal direction. A change in brightness as the scanner passes between the region and aperture creates in the scanning signals, a pulse indication of the aperture position. Signals for a progressively changing group of successive scanning lines large enough in number to span a given aperture on either side in the orthogonal direction and include a signal for at least one line intersecting the aperture; i.e., three or more consecutive lines, are synchronously compared by time delaying the earlier signals to coincide with the real time signal. The coincidence of one or more line signals indicative of an aperture directly preceded and followed by a line signal free of an aperture indication signifies the presence of an aperture.

Abstract: A photographic processing cassette (35) for the processing of an exposed photographic silver halide emulsion layer element, which comprises:a developer liquid container unit including an initially empty developing tray (38) arranged for cooperation with a lick roller (39) for the application of developer liquid to the photographic element, and a separate holder (64) for a supply of developer liquid and an openable foil (44) through which a fluid connection between the holder and the tray may be established to introduce developer liquid into said tray,a rupturable draining area (75) in the developer liquid container, andliquid absorption pack (40) located to receive liquid draining from said draining area after rupture thereof.

Abstract: An interspecific antigen of Mycobacteria consists essentially of a mixture in substantially immunochemically pure form of a protein having a molecular weight of at least about 4.times.10.sup.6 Daltons and polysaccharide having a molecular weight of at least about 1.times.10.sup.6 Daltons, and has when subjected to cross-electrophoresis an immunoelectrophoretic precipitation pattern corresponding to A60-antigen of Mycobacteria bovis strain BCG. This antigen is effective for detecting the prior exposure of a subject to Mycobacterial infections by a cutaneous test.