Abstract: A method for manufacturing a printed wiring board having a solder layer existing on circuit paths located on surfaces of the board and a solder layer on the walls of thru holes located in the board involves coating the surface of the board with a layer of photopolymer resist. A shield is placed over selected areas of the solder layer on the surface and the shielded surface is exposed to ultra violet light until the unshielded resist hardens. The shielded resist which has remained soft is removed and the board is washed with solder resist to remove the solder layer not covered by a coating of hardened resist.

Abstract: A process for permanently imaging data on lottery tickets and the like which comprises of steps of; providing an ink receptive, non-shrinking resinous coating on a webbed coupon substrate and heat curing the same, applying to the ink receptive resinous coating, imaging data by an ink jet printer using a sublimable dye, drying the dye, applying an ultraviolet curable resinous coating over the dye, coating the ultraviolet curable resinous coating by ultraviolet light and further heating the substrate between 275.degree. Fahrenheit and 400.degree. Fahrenheit thereby causing the dye to permanently sublime into the ink receptive resinous coating and the ultraviolet curable resinous coating.

Abstract: Optical substrates are coated with blooming layers. The substrate is placed into a vacuum vessel, the vessel is evacuated and the substrate is subjected to infrared radiation before and during the evaporation process. The substrate can be a plastic material and is preferably polydiethylene-glycol-diallyl-carbonate. Preferably initially a thin layer of high-refractive index silicon monoxide and then a second thicker, lower-refractive index silica are deposited. The resulting optical articles such as eye-glasses and watch glasses have excellent properties.

Abstract: A method for forming a multilayered electroluminescent device having dielectric layers sandwiched between two electrodes. One dielectric layer includes phosphor particles dispersed throughout. Each dielectric layer is subjected to three distinct heat levels: a preheat temperature level; a fusing temperature heat level; and a cooling/heat temperature level which enables the contiguous layers to gradually cool into fusion. One electrode may be a solid substrate which is fused to a contiguous dielectric layer and the other electrode substance may be sprayed in a liquid state onto the surface of the phosphor-dielectric layer when it is also in a liquified state after being cooled to the cooling/heat level prior to solidifying. The illuminating phosphors are mixed in the liquified dielectric material just prior to forming the phosphor-dielectric layer and applying the three heat levels thereto.

Abstract: For supplying frit slurry to the sealing surface of a funnel portion of a cathode ray tube, air under pressure, preferably saturated with a solvent for the frit slurry, is supplied to a vessel containing the frit slurry, and the latter is transported by the air under pressure out of an outlet of the vessel and through a hose or hoses for deposit on the sealing surface. The flow of frit slurry is regulated by a valve between the vessel outlet and the hoses. The frit slurry contained in the vessel is stirred continuously to maintain a substantially constant slurry viscosity as the slurry leaves the vessel outlet.

Abstract: A method for preparing a magnetic recording medium comprising a non-magnetic support having coated thereon a magnetic layer containing plate-shaped ferromagnetic fine particles oriented perpendicular to a plane of the surface of the support, the process comprising the steps of:coating the non-magnetic support with a coating composition wherein ferromagnetic fine particles are dispersed in a solution comprised of a compound polymerizable by radiation with electron beams and a solvent, said particles being plate-shaped and having an axis of easy magnetization perpendicular to a plane of the plate-shaped particles;orienting the ferromagnetic fine particles perpendicular to the surface of support while the coating composition is undried;radiating the composition with electron beams; anddrying the composition by removing the solvent.

Abstract: A coating is produced by a method including a screen printing of a photopolymerizable composition on a printed circuit board, illuminating said composition to partially polymerize it and bake it to complete the polymerization.The composition used by said method contains a reaction product of a monoethylenically unsaturated carboxylic acid with a material of the group of epoxy resin and epoxidized novolak, a phenoxy resin, a thickening agent, a polyethylenically unsaturated compound, a photo-initiator and a solvent.The coating produced according to this invention is used as solder mask.

Abstract: Multifilament bundles are impregnated with an ultraviolet curable resin to form a composite material suitable for use as a strength member in cables and other applications. The inventive coatings obtain good wetting of the filaments, allowing rapid penetration into the roving or yarn. A much faster coating and curing operation is obtained as compared to prior art methods. Fiberglass strength members made by this technique are especially advantageous for use in optical fiber cables where high strength and a low thermal coefficient of expansion are desired, as well as nonconductivity to protect against lightning strikes.

Abstract: A lyophobic layer is produced on surfaces of a jet-orifice carrier of a recording device functioning with fluid droplets by generating a uniform and pore-free layer on surfaces of the carrier with the application of high frequency/low pressure glow discharge using a gaseous organic compound, such as octofluorocyclobutane.

Abstract: A corona discharge method wherein corona ion flow having direct current component with a polarity opposite to an electrification polarity of toner on a transfer material is applied on the transfer material such that a density of the ion flow on incoming half area of corona discharge area is more sparsely than that of the ion flow on outgoing half area, in order to transfer the toner from an image receptor onto the transfer material.

Abstract: Interdigitated back contact solar cells are made by screen printing dopant materials onto the back surface of a semiconductor substrate in a pair of interdigitated patterns. These dopant materials are then diffused into the substrate to form junctions having configurations corresponding to these patterns. Contacts having configurations which match the patterns are then applied over the junctions.

Abstract: Methods are disclosed for the treatment of food, beverage, and medicine containers and the like, which are made of organic polymeric resins, to greatly increase the gas barrier properties thereof. The containers are ion-plated with a very thin flexible layer of an inorganic oxide.

Abstract: A method of and apparatus for accurately sensing and reproducibly controlling the intensity of electromagnetic energy in the decomposition region of a deposition chamber. The apparatus includes a detector adapted to (1) monitor the level of radiation emitted from the decomposition region and (2) provide an output signal indicative of said level. The invention further includes circuitry for (1) comparing the signal from the detector with a reference signal indicative of a preselected level of energy, and (2) generating a correction signal indicative of the actual level of energy in the decomposition region relative to the preselected level of energy. According to the method of this invention, the correction signal may be utilized to regulate the source of electromagnetic energy so that the preselected level of electromagnetic energy within the decomposition region is kept constant despite fluctuations in other operating parameters.

Abstract: A plastic article having adhered thereto a translucent and decorative UV cured coating on the surface thereof which coating is wrinkled in a macroscopically irregular but microscopically regular manner and comprised of the photoreaction products of (i) certain polyfunctional acrylate monomers (ii) certain polysiloxane-polyether block copolymer surfactants and (iii) azobisisobutyronitrile.

Abstract: A low dosage radiation polymerizable protective and decorative coating composition or paint, coated articles bearing such a protective coating and processess for preparing such articles. The radiation polymerizable coating composition comprises an organic resin/monomer mixture of:(A) between about 97 and about 3 weight percent alpha-beta olefinically unsaturated organic resin containing between about 0.5 and about 5 vinyl unsaturation units per 1000 molecular weight of said resin, and(B) between about 3 and about 97 weight percent vinyl monomers polymerizable with said resin upon exposure to radiation, characterized in that said vinyl monomers include N-vinyl-2-pyrrolidone in an amount of from about 3 and up to about 10 weight percent based on the total weight of (A) and (B).The flexible coating exhibits excellent physical qualtities and good adhesion to a variety of substrates being particularly suitable for use on vinyl chloride fabric, wherein it is discoloration resistant after heat aging.

Abstract: Hydrogen ion is implanted twice or more at different acceleration voltages into desired portions of a magnetic film holding magnetic bubbles to form a magnetic bubble propagation path. This ensures production of an ion-implanted device having a sufficiently large anisotropic magnetic field parallel to the magnetic film and a high Curie temperature.

Abstract: A process of and related apparatus for achieving laser annealing of film-like surface layers of chemical vapor deposited silicon nitride and silicon carbide to relieve their inherent residual stresses. A laser beam is used to anneal the layers, in conjunction with a photoacoustic gas cell and related beam modulating means for utilizing a photoacoustic effect principal for monitoring, detecting and effectuating beam control as needed during the laser annealing process.

Abstract: A method of producing a buried long period grating which is substantially unaffected by material stability, high tolerance requirements, stringent machining requirements, and heat transfer. The method takes a plurality of rectangular-shaped pieces of dielectric material and by a series of appropriate cuts, coatings and attachments produces an effective buried long period grating.

Abstract: A conversion screen such as is used for X-ray image intensifier screens, X-ray image intensifier tubes, cathode-ray tubes, image pick-up tubes, X-ray electrography, fluorescent lamps and the like is formed by the deposition of a layer of conversion material on a carrier (19) via a melting space (7) which is preferably heated by means of a plasma arc. This method of deposition offers very robust screens with a high density and also allows the filling of recesses in a carrier with conversion material, so that structured conversion screens can be formed.

Abstract: A method for selectively heating an insulating layer on a semiconductor structure by a high energy transient radiation source to a temperature sufficient to cause reflow without any significant heating of the regions adjacent to or underlying the insulating layer. In one embodiment a laser tuned to the absorption wavelength of the insulating material is scanned over the surface of the semiconductor structure. In another embodiment an insulating layer and an underlying or adjacent semiconductor layer are concurrently heated by a laser tuned to an absorption wavelength common to both in order to maintain the integrity of the interface therebetween. In a further embodiment the depth of heating in an insulating layer is controlled by selecting an appropriate dwell time for a continuous wave laser and a pulse duration for a pulsed laser.