Abstract: A method of producing a phosphor having high brightness is provided, and the method includes the steps of firing raw materials of phosphor, washing the resulting fired material, ball-milling the washed material with one or more dispersion agents, coating the ball-milled material with pigment, and drying the coated material. The dispersion agent is preferably a compound selected from the group consisting of silicate compounds, sodium polycarbonate, and alcohols.

Abstract: A process for preparing a radiation image storage panel composed of the steps of preparing a multi-layer sheet composed of a flexible base, an adhesive layer and a transparent resin film; coating a fluororesin layer on the resin film; peeling the base together with the adhesive layer from the fluororesin-coated sheet; forming an adhesive agent layer on the multi-layer sheet on the side having no fluororesin layer; covering the adhesive agent layer with a protective film; and placing under pressure on a beforehand prepared stimulable phosphor sheet composed of a support and a stimulable phosphor layer the multi-layer sheet after removing the protective film so that the adhesive agent layer can be brought into contact with the phosphor layer.

Abstract: In a radiation image storage panel comprising a stimulable phosphor layer and a protective film placed thereon, the protective film is made of a film of plastic material and a layer of a fluororesin-containing resin composition coated on the phosphor layer. The coated layer is prepared by coating a solution of a resin composition containing not less than 30 weight % of a fluororesin and drying thus coated solution layer.

Abstract: The present invention relates to a process for manufacture of color cathode-ray tube for preventing the deterioration of color purity of red phosphor while enhancing the brightness and the contrast of color cathode-ray tube, which comprises steps of forming a black matrix film corresponding to 3 colors of green(G), blue(B) and red(R) onto the panel glass by using 0.067-0.075 g atom (content relative to 1 mol of Y.sub.2 O.sub.3) of europium(Eu) as an activator for red phosphor; forming a 3 color fluorescent film onto said black matrix film, wherein said 3 color fluorescent film consists of green phosphor, red phosphor to which predetermined amount of red pigment having 50-70% of reflectance has been adhered, and blue phosphor to which predetermined amount of blue pigment having 50-65% of reflectance has been adhered; coating an organic film on the 3 color fluorescent film; forming a metal reflective film thereon; and thermally decomposing the organic film at high temperature to obtain a fluorescent plane.

Abstract: The invention relates to the addition of sulfonated zinc, manganese, or aluminum phthalocyanines to inorganic fillers and pigments for enhancing their whiteness, brightness and chromaticity, as well as to the fillers and pigments and mixtures thereof so obtained, and to the use thereof in e.g. paper manufacture.

Abstract: An amorphous upconversion phosphor comprising barium fluoride a combination of rare-earth fluorides including yttrium and lanthanum and dopants, and a waveguide thereof on a substrate selected to have a refractive index lower than a thin film of the phosphor material or any other substrate with an appropriate buffer layer of lower refractive index that the film wherein infrared radiation is converted into visible or visible and ultra violet light. The amorphous upconversion phosphor is deposited at temperatures low enough to permit integration into semiconductor materials.

Abstract: This invention discloses processes and articles for the manufacturing of composite plated articles comprising finely divided particulate matter dispersed within metallic matrices and having light emitting properties, such articles being useful in the metallization of articles and their reuse through subsequent rejuvenation, without damaging the base metal of said articles.

Abstract: In accordance with the principles of the present invention, there is disclosed herein a structure and method of fabricating an anode plate for use in a field emission device. The method comprises the steps of providing a transparent substrate 20 and applying transparent insulative material 28 over the substrate 20. Next, particles of luminescent material 25 are partially embedded in selective areas of the transparent insulative material 28. A layer of electrically conductive material 23 is then applied over the luminescent material 25. The layer of electrically conductive material 23 is abraded so as to remove portions of the layer of electrically conductive material 23 and portions of at least some of the luminescent particles 25.

Abstract: A method for protecting against forgery a printed document comprises the step of applying on the document, during the printing thereof, a microcapsule layer. This layer comprises microcapsules including a chemical product adapted to release an indelible mark which reveals tampering on surfaces portions of a document subjected to a pressing or rubbing tampering force.

Abstract: Particles comprising an energy donor as a first component and a fluorescent dye as a second component positioned in said particles at an energy exchanging distance from one another, wherein the two components have a Stokes shift of greater than or equal to 50 nm, said particle having bound on its surface, a protein, polypeptide, nucleic acid, nucleotide or protein containing ligand analogue are disclosed and claimed. In addition, novel fluorescent dyes are described which exhibit intramolecular energy transfer for use to label various molecules, proteins, polypeptides, nucleotides and nucleic acids or to incorporate into particles.

Abstract: A phosphor (200) for low voltage applications including a plurality of light-emitting particles (10) being made from a UV-excitable light-emitting phosphor, a diffusion barrier (25) being formed as a film on the light-emitting particles (10), and a coating (30) of an electron-excitable UV-emitting material being formed on the diffusion barrier (25). A method for making a low voltage phosphor including the steps of (i) providing a UV-excitable light-emitting phosphor (ii) forming a diffusion barrier on the UV-excitable light-emitting phosphor via sol-gel techniques (iii) forming, via sol-gel techniques, a film of an electron-excitable UV-emitting material on the diffusion barrier.

Abstract: A process and device are disclosed for coating with a suspension the inside of meandrous one-tube glass vessels with U-bends. After the introduction of a measured amount of a suspension, the vessel is axially rotated moving horizontally and is tilted, so that the legs of the one-tube glass vessel take a horizontal position between the reversal points of the tilting movement.

Abstract: A fluorescent complex polymer with fluorescent organometallic complexes connected by organic chain spacers is utilized in the fabrication of light emitting devices on a substantially transparent planar substrate by depositing a first conductive layer having p-type conductivity on the planar surface of the substrate, depositing a layer of a hole transporting and electron blocking material on the first conductive layer, depositing a layer of the fluorescent complex polymer on the layer of hole transporting and electron blocking material as an electron transporting emissive layer and depositing a second conductive layer having n-type conductivity on the layer of fluorescent complex polymer.

Abstract: A full color three electrode surface discharge type plasma display device that has fine image elements and is large and has a bright display. The three primary color luminescent areas are arranged in the extending direction of the display electrode pairs in a successive manner and an image element is composed by the three unit luminescent areas defined by these three luminescent areas and address electrodes intersecting these three luminescent areas. Further, phosphors are coated not only on a substrate but also on the side walls of the barriers and on address electrodes. The manufacturing processes and operation methods of the above constructions are also disclosed.

Abstract: A method for visualization of a lubricant coating on a surface of an article includes dissolving a fluorescent agent into a lubricant. The method then includes applying the fluorescenated lubricant to coat a surface of the article. The coated article is then irradiated with an electromagnetic radiation capable of inducing a fluorescent emission in the fluorescent agent and the fluorescent emission is observed to detect the coverage of the lubricant on the surface of the article.

Abstract: A technique for uniformly depositing particles, especially phosphor particles, onto a display panel and an apparatus for carrying out this technique are set forth in this application. This technique relies on both electrostatically and pneumatically passing charged particles to the display panel so that a uniform coating takes place both on the flat surfaces and on the curved surfaces.

Abstract: Siloxene and siloxene derivatives are compatible with silicon and may be generated as epitaxial layer on a silicon monocrystal. This permits the production of novel and advantageous electroluminescent devices, such as displays, image converters, optoelectric integrated circuits. Siloxene and siloxene derivatives may also be advantageously employed in lasers as laser-active material and in fluorescent lamps or tubes as luminescent material.

Abstract: An optical sensor is provided for measuring the pH of a fluid sample. The sensor is formulated using a fluorescent polymer composition comprising a copolymer of a water-dispersable, polyether-containing urethane olefin precursor and a fluorescent monomer species, wherein the ratio of precursor and fluorescent monomer species is such that a predetermined apparent pKa is provided. The sensor is prepared by coating the distal end of an optical waveguide with the fluorescent polymer composition, and curing the copolymer contained in the composition, e.g., by exposure to radiation of a suitable wavelength.

Abstract: The present invention is addressed to providing a simple, yet reliable method for labeling an object for its verification. The present invention includes applying a mark to said object with a visible ink which contains a first component which is visible to the naked eye and a second component which is invisible to the naked eye and comprises one or more of ultraviolet radiation (UV) dye which is visible only in the presence of selected ultraviolet radiation, an infrared (IR) dye which is visible only in the presence of selected infrared radiation, an ink which displays a selected measurable electrical resistivity, or a biologic marker. The applied mark has said first component which is visible to the naked eye and said second component which is invisible to the naked eye.

Abstract: A method of fabricating an anode plate 18 for use in a field emission device comprising the steps of providing a transparent substrate 20 and depositing a layer of a transparent, electrically conductive material 24 on a surface of the substrate. Next, portions of the layer of conductive material 24 are removed to form regions of the conductive material. Luminescent material 26 is then applied to the conductive regions 24, and a layer of electrically conductive material 23 is applied to the luminescent material 26. Outer portions of the conductive material 23 and an outer portion 27 of at least some of the particles 25 of the luminescent material are thereafter removed.

Abstract: The present invention is for improved thick film electroluminescent lamps and displays which provide a moisture barrier for the phosphor layer of the electroluminescent lamp and allows all of the contacts for the lamp or the display to reside within the footprint of the lamp. The moisture barrier is provided without employing a pair of encapsulating polymer sheets. The resulting lamps and displays are provided with vias which allow leads to be attached to a front electrode and one or more back electrodes employed to provide a potential across a phosphor layer therebetween causing the phosphor to emit light. A second dielectric layer is deposited over the underlying architecture of the lamp or display and forms a seal with an exposed continuous phosphor free band of the front electrode, which surrounds the perimeter of the lamp and also seals with a phosphor free contact region at the bottom of the via which it passes down. The second layer also seals any passages provided which traverse the lamp or display.

Abstract: A process is described for the perparation of radiation image storage panels. The process includes forming a phosphor sheet from stimulable phosphor and a thermoplastic elastomer binder, the binder having a softening point of 30.degree. to 300.degree. C. The phosphor sheet is then heated on a support and subsequently compressed by a calender roll under heating. The sheet during compression is maintained at or heated to a temperature not lower than the softening point of the binder so as to fix the phosphor sheet on the support.

Abstract: A method and apparatus for sequentially coating fluorescent lamps with a protective coating. The lamps are advanced continuously through coating apparatus which prepares the surfaces of the lamps for coating, then dips the lamps in a bath of liquid coating material, and subsequently cures the liquid coating material. The lamps may be labeled prior to coating, such that the coating provides tamper resistance for the labeling, in addition to containment of shattered glass and lamp contents in the event of breakage of the lamp.

Abstract: An apparatus and method for forming color video display screens of the line or stripe screen type are disclosed. Tubules form menisci of screen element liquids which are contacted with a moving display screen surface to produce screen element lines comprising the screen.

Abstract: A high luminance thin-film electroluminescent device comprising a phosphor layer comprising SrS as the host material and a luminous center. The phosphor layer is sandwiched between two insulating layers and two thin-film electrodes are provided on each side of the insulating layers. At least one of the electrodes is transparent, and the excitation spectrum of the phosphor layer exhibits a peak having a maximum value at a wavelength of about from 350 nm to 370 nm. Such a high luminance thin-film electroluminescent device can be prepared by annealing its phosphor layer comprising SrS as the host material at a temperature of at least 650 .degree. C. for at least one hour in an atmosphere of a sulfur-containing gas.

Abstract: A process is provided for creating a watermark on a polymeric sheet. The sheet is passed between abutting rollers, at least one of said rollers having a recessed and/or raised motif, to form an impression on the sheet corresponding to the motif, and then orienting by stretching the sheet. The impressed and oriented sheet has dark areas corresponding to the raised portions and light areas corresponding to recessed portion of the motif.

Abstract: A security marking method and composition wherein a first marking is applied to a surface of a substrate with a mixture of a printing medium and a first composition, wherein the first marking is visible to an unaided human eye and is indistinguishable from a marking applied with the printing medium alone, to an unaided human eye when illuminated by visible light or ultraviolet light. A second composition is added either with the mixture or thereafter, wherein the second composition is reactable with the first composition to fluoresce and wherein the fluorescing is only visible to an unaided human eye when illuminated by ultraviolet light.

Abstract: A process for producing an electroluminescent device comprising a luminescent layer located between two electrodes formed on an insulating substrate wherein the luminescent layer is composed of a host material to which a luminescent center element is added and the host material is composed of an alkaline earth metal element of the Group II of the Periodic Table and an element of the Group VI, which process comprises forming the host material by chemical vapor deposition to react a gas of an organic compound containing the alkaline earth metal element of the Group II and a gas of a compound containing the element of the Group VI in a reactor, the gas of the organic compound containing the alkaline earth metal element of the Group II being formed from a cyclopentadienyl compound. By this process, EL devices can be produced with high reproducibility.

Abstract: A fiber optic sensing device for measuring a chemical or physiological parameter of a body fluid or tissue is provided. To one end of the fiber is attached a polymer including a plurality of photoactive moieties selected from the group consisting of chromophores and lumophores, the photoactive moieties spaced apart so as to minimize chemical or physical interaction therebetween while optimizing the density of photoactive moieties. In one embodiment, a polymer chain is covalently bound to photoactive moieties through functional groups such as esters, amides, or the like. In a second embodiment, a polymer chain is inherently fluorescent and is formed from at least one monomeric unit. These devices are particularly useful as pH and oxygen sensors.

Abstract: A water based luminescent highway or roadway paint composition that contains a fine powdered luminescent substance which does not require an organic solvent, a colored paint dispersion, and a polyurethane resin which is water compatible and which imparts an extended surface life under normal traffic conditions. The luminescent substance may be either a phosphorescent material or a combination of a phosphorescent and a fluorescent material. When the fluorescent material is present in the luminescent substance a daytime luminescence or reflectivity or coloration is produced in addition to the phosphorescence produced at night when light (head lights of an automobile) shine on the paint composition marking the median highway stripe or the highway edges.

Abstract: The present invention relates to phosphors, composition containing phosphors and methods of their use. More particularly, it relates to organic phosphors which are amino acid salts compositions containing the phosphors and methods of using those phosphors and compositions to make objects photo-luminescent.

Abstract: To improve the uniformity and the adhesive strength of luminophore layers, a process is proposed in which the luminophore is enveloped with glass flux and the enveloped luminophore is applied to a luminophore carrier at elevated temperatures by using acrylic resin.

Abstract: There is described a process for the vapor deposition of a scintillator phosphor composition with concomitant shadowing wherein the substrate to be processed is rotated through an arc relative to a vapor source of the scintillator phosphor composition whereby shadowing introduces voided gaps or interstices between columns as a result of the preferential components receiving more coating flux, particularly in the presence of oblique flux.

Abstract: A security marking method comprises marking a portion of the substrate by applying a first marking fluid which is invisible to a unaided eye when illuminated by both visible light and ultraviolet light and activating the marked portion by applying a second marking fluid thereon. The second marking fluid is reactable with the first marking fluid to be invisible to an unaided human eye when illuminated by visible light and fluorescent when illuminated by ultraviolet light. The invention also includes the composition comprising the first and second marking fluids.

Abstract: A doped starting substance is applied to a substrate composed of SiO.sub.2 glass. A phosphor layer is formed by reaction of the starting substance with SiO.sub.2 of the substrate to form a silicate of the starting substance. This reaction is carried out in a heat-treatment process in an oxygen-containing atmosphere. Zn or Gd is preferably used as starting substance.

Abstract: The invention relates to a method of coating red-luminescing phosphor particles with hematite (.alpha.--Fe.sub.2 O.sub.3), whereby first Fe(OH).sub.3 is deposited on the phosphor particles and subsequently converted into .alpha.--Fe.sub.2 O.sub.3 at a raised temperature. A good adhesion of the hematite pigments to the phosphor particles is achieved in that first an aqueous solution of an iron(III) salt and a complexing agent is prepared, in which the complexing agent and its concentration are so chosen that in combination with Fe.sup.3+ ions complex ions are formed which on the one hand do not yet precipitate at a pH-value which is at least 0.5 higher than the value at which the phosphor particles just fail to be chemically attacked anymore, and which are dissociable at a further increase in the pH-value so that Fe(OH).sub.3 is formed, in that subsequently, if the pH-value is not yet high enough, a basic substance is added to the mixture, in that the pH-value is increased to a value which is at least 0.

Abstract: A method for coating a fluorescent lamp with an aqueous suspension of a multi-component phosphor blend wherein the isoelectric point(IEP) of at least one of the individual phosphors is separated by at least two pH units from the effective IEP of the other phosphors. The method involving altering the IEP of the first phosphor to within about two pH units of the effective IEP of the other phosphors, adding the modified phosphor to an aqueous suspension of the other phosphors, the aqueous suspension having a pH outside the range defined by the modified IEP and the effective IEP to inhibit flocculation, and coating a fluorescent lamp.

Abstract: A thin film, intagliated phosphor screen structure includes an optical fiber bundle in which each of the fibers has its glass core etched below the level of its cladding sheath at the internal surface of the screen, and a phosphor layer is deposited as a thin film which fills in the core recesses. Preferably, the upper surfaces of the phosphor layers are formed with a spherical or parabolic shape, which is obtained by surface tension when the phosphor film is annealed. The upper surfaces of the phosphor layers may also be finished by polishing. An aluminum reflective layer may also be coated on the phosphor layer. The bottom walls of the cores are preferably etched to be convex or concave to provide a lens effect. The intagliated phosphor screen can transmit 90% to 95% or more of the light generated in the phosphor layers, for an output gain factor of 5 or more over conventional phosphor screens.

Abstract: Apparatus and method for applying a chemiluminescent fluid to an object. Two chemiluminescent fluid components are mixed within a reservoir. The mixed chemiluminescent fluid then flows through a porous applicator element mounted in a passageway in communication with the reservoir interior. The porous applicator element is in the form of a writing nib which may be utilized to manually apply the chemiluminescent fluid to an object.

Abstract: A method of producing luminescent display screens for CRTs using meniscus coating to apply photosensitive slurries to the faceplate, thereby eliminating material waste, reducing particle contamination and improving coating uniformity.

Abstract: Disclosed herein is a method for manufacturing edge emission type EL device arrays. A substrate carrying individually formed EL device arrays is coated with a transparent film. The film is etched to form terminals through exposure of the edges of block terminals and to make contact holes reaching an upper electrode layer of the EL devices. The contact holes are then covered with a conductive layer that is etched to form common electrodes conductive to predetermined edge emission type EL devices within each block.

Abstract: The present invention is directed to a method of and apparatus for forming a coating film on an inner surface of a panel of a cathode ray tube. In this case, slurries are injected into the panel, the panel is rotated on its own axis so as to uniformly coat the slurries on the panel and a recovering hood is moved in an opposing relation to the panel in synchronism with the revolution of the panel to thereby recover the slurries. Therefore, particularly when the slurries are recovered, the slurries can be prevented from being scattered, thereby avoiding the surroundings from being splattered.

Abstract: A process for preparing a radiation image storage panel having a support and a stimulable phosphor layer comprises the first step of forming a phosphor sheet comprising a binder and a stimulable phosphor and the second step of compressing the phosphor sheet on the support under heating up to a temperature of not lower than softening point or melting point of the binder, using a plurality of calender rolls giving different pressure, a combination of a calender roll and a pre-heating means, or a combination of a calender roll and a tension-applying means.

Abstract: Identification device for distinctively marking objects, location or sides of symmetrical objects such as audio tape cassettes, so that they can be distinguished in the dark. A carrier lamina has a matt phosphorescent pigment coating exposed on one side so that indelible writing or other marks can be made thereon using a writing instrument. The dark writing or other marks are viewable in the dark in contrast against the glow of the unmarked phosphorescent pigment surface and will not smudge or erase when handled. The opposite side carries a permanently tacky pressure sensitive adhesive coating so that the phosphorescent lamina can be easily adhered on objects or locations to be marked.

Abstract: The present invention comprises an element and method for preparing phosphorescent colored indicia comprising providing a phosphorescent substrate; applying to said phosphorescent substrate a colored translucent media; exposing said colored phosphorescent substrate to excitation energy; and viewing said colored substrate and media in the dark.

Abstract: A method of forming a partial protective coating on phosphor particles to improve initial power output and maintenance of fluorescent lamps made with the phosphor. The phosphor particles are fluidized in a bed and at least partially enveloped by a coating precursor material. Residence time of the phosphor particles in the fluidized bed is short so that the phosphor particles are only partially coated with the coating precursor material. The coating precursor material is reacted to form a protective coating over at least a portion of the surface of the phosphor particles. The partially-coated phosphor particles are then annealed to cause the protective coating to selectively cover at least a portion of certain sites on the surface of the phosphor particles.

Abstract: A method for manufacturing a phosphor screen used in a color CRT takes the steps of multilayering a red phosphor layer, a green phosphor layer, a blue phosphor layer, and a non-luminescent layer being laid between the adjacent color phosphor layer, cutting the multilayered block into filmy pieces toward the thickness, adhering or pressurizing the filmy cut pieces on a glass plate for front panel of the color CRT, and burning the cut pieces. This method makes it possible to efficiently manufacture a high-definition and high-resolution color phosphor screen and form fine RGB stripes. This method, thus, may apply to a small-sized CRT about which the realization of the high-definition and high-resolution color phosphor screen has been difficult.

Abstract: A radiation image storage panel having a stimulable phosphor layer and an improved protective film is disclosed. The improved protective film is produced from a mixture of a film-forming resin and an oligomer having a polysiloxane skeleton or a perfluoroalkyl group. The improved protective film can be a coated layer containing a fluorocarbon resin which is soluble in an organic solvent. Otherwise, the improved protective film can be produced by coating on the phosphor layer a mixture of a film-forming resin composition containing a fluorocarbon resin which is soluble in an organic solvent, and a powdery resin of perfluoroolefin or silicone.

Abstract: A photoconverter formed as a sintered coating on a glass tube substrate, the coating being of a sol with a matrix compound capable of forming a sol-gel film. The sol-gel film contains a matrix substance component permeable to visible light and an acid chloride containing luminous atoms. The sol-gel film is reduced by calcination and sintered to form the photoconverter. The photoconverter is easy to use and is capable of executing photoconversion with a high energy efficiency.

Abstract: A red pigment coated phosphor comprises a phosphor for color cathode ray tube and red pigment attached to said phosphor by an organic binder, wherein said organic binder is gellatin and casein. A process for preparation of a red pigment coated phosphor comprises the steps of: preparing three dispersions of red phosphor particles, red pigment particles and organic binder, respectively; uniformly mixing said three dispersions and agitating them sufficiently; adjusting pH of the mixture obtained; and adding a curing agent thereto, washing said mixture and then drying it. The red pigment coated phosphor of the present invention has a good dispersion and a good affinity for phosphor slurry.