Abstract: A color cathode-ray tube having a good quality of display screen in which a fluorescent dot pattern is formed to have good configuration and positional accuracies.

Abstract: Disclosed are a shadow mask, a cathode ray tube having the above shadow mask and a method for manufacturing a screen using the shadow mask. The shadow mask can concentrate electron beams and thereby largely increase luminance even with low electric power without deteriorating the purity of colors. The shadow mask has a first and a second thin metal plates. A first and a second voltages are applied to the first and the second thin metal plates and concentrate the electron beams passing through the first and the second electron beam passing holes respectively formed in the metal plates. The screen is manufactured with a controlled size of a developed area by controlling time using the shadow mask and an electrophotographical process.

Abstract: The black matrix of the faceplate panel is deposited by a wet-layer photoconductive manner. An organic conductive layer is initially deposited on the faceplate panel, on which an organic photoconductive material is formed to form an organic photoconductive layer. The photoconductive layer is charged to positive or negative potential and a selective area of the organic photoconductive layer is exposed to light radiated from an exposure device, such that the potential can be left on the unexposed area, where the black matrix will be deposited, of the organic photoconductive layer. Then, As novel steps, deposition of the conductive black matrix is achieved according to the following steps. First, a conductive black matrix material is charged having the opposite potential to that left on the unexposed area of the organic photoconductive layer.

Abstract: The method of electrophotographically manufacturing a screen on an interior surface of a faceplate for a CRT, according to the present invention comprises the steps of first-coating the faceplate with a volatilizable conductive layer, second-coating the conductive layer with the first photoconductive layer including a dye sensitive to ultraviolet rays, third-coating the ultraviolet-photoconductive layer with a second photoconductive layer including a dye sensitive to visible light, charging the whole area of the second photoconductive layer by exposing the whole surface of the second photoconductive layer to visible light while applying a suitable DC voltage between the conductive layer and the second photoconductive layer, and exposing selected areas of said first photoconductive layer to ultraviolet rays through a shadow mask to discharge the charge from the selected areas of the first photoconductive layer. Then, in developing a uniform density of the screen structure material is obtained.

Abstract: A light fixing layer is deposited on the panel during the screening process of a panel. The light fixing layer can be softened when it is subjected to light so as to allow the phosphor layers to be fixed on the panel. That is, the light fixing layer shows adhesive characteristics when subjected to light. Therefore, after developing all phosphor layers on the panel, when the light is radiated to the light fixing layer, the light fixing layer is softened, thereby fixing the phosphor layers.

Abstract: The present invention discloses a flat display.The flat display is obtained by sealing an electro luminescent display which emit red and green light to a plasma display panel which emit blue light. One discharge space formed in the plasma display panel holds the red and green luminescent patterns in the electro luminescent display in common.

Abstract: A method of exposing a photosensitive layer or a fluorescent slurry layer deposited on the inner surface of a panel in which a shadow mask frame assembly is installed and apparatus therefor, are provided. A shadow mask installed inside the panel is induction-heated to a predetermined temperature using an induction-heating coil to be sufficiently expanded, and then the photosensitive layer or the fluorescent slurry layer deposited inside the panel is exposed via electron beam passing holes formed in the shadow mask. Therefore, the initial stabilization time for the CRT can be shortened.

Abstract: A method for use in the construction of a color display screen using deposition of a plurality of electroluminescent materials onto a substrate bearing said screen. The method comprises the forming operations a), b), and c) in any sequence: a) forming on the substrate a first pattern of deposition sites covered with a first material selectively strippable by a first agent; b) forming on the substrate a second pattern of deposition sites covered with a second material strippable by a second agent but not significantly attacked by said first agent; and c) forming on the substrate a matrix surrounding the first and second patterns of deposition sites. The method includes thereafter performing a first stripping of the first material with the first agent to reveal first deposition sites within the matrix and performing a first depositing of a first electroluminescent material within the first revealed deposition sites.

Abstract: Shadow mask and process for manufacturing a shadow mask made of an iron/nickel alloy in which: a foil perforated with holes is provided, the foil is subjected to a heat treatment in order to obtain grains whose size, as defined by the ASTM standard, is greater than or equal to ASTM 7, the foil is formed in order to give it the shape of a shadow mask.

Abstract: Items of material are patterned on a substrate by forming a layer of photoresist on the substrate and a layer of metal on the photoresist. The photoresist is patterned to define an opening exposing a portion of the substrate and the metal is patterned to define an aperture smaller than the opening so as to divide the exposed surface of the substrate into shadow areas and a non-shadow area. A first material system is evaporated generally perpendicular to the aperture to form a first organic light emitting diode on the surface of the substrate in the non-shadow area and second and third material systems are evaporated at angles to the aperture to form second and third organic light emitting diodes in the shadow areas. Passivation material is evaporated perpendicularly onto the first diode and at the angle onto the second diode.

Abstract: A shadow mask of a color cathode ray tube has a large number of electron beam apertures through which electron beams emitted from the electron gun pass. Bach of the electron beam apertures has a larger opening open to a surface of the shadow mask on a phosphor screen side, and a smaller opening open to a surface of the shadow mask on an electron gun side and communicating with the larger opening. The smaller opening of each of the electron beam apertures located at a peripheral portion of the shadow mask is defined by a wall surface of the shadow mask. The wall surface includes an outward portion which is located outward in a radial direction with respect to a center of the shadow mask and a central-side portion which is located on a central side of the shadow mask. An angle defined by the outward portion and a central axis of the smaller opening is larger than an angle defined by the central-side portion and the central axis of the smaller opening.

Abstract: A light-shielding photosensitive resin composition comprising (1) an alkali-soluble binder, (2) a photo-polymerization initiator, (3) an addition-polymerizing monomer having one or more ethylenic, unsaturated double bonds, and (4) one or more colorants, wherein said photo-polymerization initiator is substantially insensitive to light having a wavelength of 400 nm or longer. The composition is preferably coated on a temporary support to form a transfer material. Using the composition or the transfer material, a flat, light-shielding film having a high optical density may be formed on a color filter by self-alignment exposure without using an optical filter.

Abstract: An alloy sheet having a pierced hole face and providing a desirable etching performance, comprising {331}, {210}, and {211} planes on the surface; the gathering degree of the {311} plane being 14% or less, the gathering degree of the {210} plane being 14% or less, and the gathering degree of the {211} plane being 14% or less; and the ratio of the gathering degrees expressed by the equation {210}/({331}+{211}) being 0.2 to 1. An alloy sheet having a pierced hole face providing a desirable etching performance, comprising planes of {111}, {100}, {110}, {311}, {331}, {210} and {211}; the gathering degree of the {111} plane, S.sub.1, being 1 to 10%, the gathering degree of the {100} plane, S.sub.2, being 50 to 94%, the gathering degree of the {110} plane, S.sub.3, being 1 to 24%, the gathering degree of the {311} plane, S.sub.4, being 1 to 14%, the gathering degree of the {331} plane, S.sub.5, being 1 to 14%, the gathering degree of the {210} plane, S.sub.

Abstract: A method for production of graph scales of a panel of a cathode-ray tube for an oscilloscope for forming the panel graph scales by exposing and developing a slurry precipitate on a panel through a mask having cathode scales. More particularly, the present invention relates to a panel graph scale production method of a novel type characterized in that a specific filter having light transmissivity of about 62% at the center is disposed between the mask and a light source. According to this method, it is not necessary to arrange a large number of parallel ray lenses between the mask and the light source as opposed to the prior art, the distance between the panel and the light source can be more reduced, the overall exposure system for producing the scales can be more simplified, and the intended panel graph scales can be produced under an ideal condition.

Abstract: Disclosed is a shadow mask plate material which consists of an Fe-Ni-based alloy containing iron and nickel as main constituents, has an unrecrystallized texture with a grain size of 10 .mu.m or less, and is excellent in etching characteristics for forming electron beam apertures.

Abstract: An apparatus (38) for rapidly and uniformly electrostatically charging a photoconductive layer (34) disposed on a conductive layer (32) provided on an interior concave surface of a viewing faceplate (18) of a CRT faceplate panel (12) is disclosed. The apparatus includes a housing (40) having a faceplate panel support surface (42), an electrical contact (52) for grounding the conductive layer, a corona charger (48), and power supplies (200, 204) for corona charging. The corona charger (48) includes a charging head (46) that substantially conforms to the contour of the interior concave surface of the viewing faceplate (18). The charging head comprises a base plate (54) having a mounting surface (56) to which a plurality of discrete charging modules (82) are attached. Each of the charging modules includes a focusing blade (86) and a charging blade (88, 188) insulated from the focusing blade. An ultimate focusing blade (186) is attached to the ultimate discrete charging module.

Abstract: A method of manufacturing a luminescent screen assembly on an interior surface of a faceplate panel 12 for a color CRT 10 includes the steps of uniformly applying a solution of a material to form an organic conductive (OC) layer and overcoating the OC layer with a solution to form an organic photoconductive (OPC) layer, on the interior surface of the faceplate panel. The OPC layer 34 is conditioned by directing a stream of dry gas thereon to warm the OPC layer to a preheat temperature, while maintaining the panel at a panel temperature less than the preheat temperature. The OPC layer is exposed to IR radiation to rapidly increase the temperature of the OPC layer to a curing temperature, greater than the preheat temperature, to remove some of the volatilizable constituents from the OPC layer, without substantially increasing the temperature of the panel.

Abstract: A photo-setting resin composition is here disclosed which comprises a photo-setting resin precursor and a dyestuff for uniformly coloring the photo-cured resin; and there is also disclosed a method for preparing a color filter by the use of this photo-setting resin composition.

Abstract: In accordance with the present invention, an apparatus for developing a latent image formed on a photoreceptor, which is deposited on an interior surface of an output window of a display device, is disclosed. The developing apparatus includes a developing chamber, having a support surface for supporting the output window, a screen structure material reservoir for storing, deagglomerating and feeding the screen structure material, and a triboelectric gun assembly communicating with the reservoir. The gun assembly triboelectric charges and imparts a desired charge polarity to the screen structure material. The gun assembly further includes at least one material dispersing nozzle spaced from the support surface for distributing the charged material for deposition onto the latent image.

Abstract: A phosphor screen (10) formed of respective color phosphor layers (9R), (9G), (9B) and respective color filter layers (4R), (4G), (4B) is formed on the inner surface of the panel (1). In that case, the respective color filter layers (4R), (4G), (4B) are respectively formed between the inner surface of the panel (1) and the phosphor layers (9R), (9G) and (9B). Therefore, the color cathode ray tube can be made high in contrast and in brightness.

Abstract: In accordance with the present invention, a method of electro-photographically manufacturing a luminescent screen assembly for a color CRT 10 on an interior surface of a faceplate panel 12 is described. A volatilizable, organic conductive (OC) layer 32 is provided on the interior surface of the panel and a volatilizable, organic photoconductive (OPC) layer 34 overlies the OC layer. The method includes the steps of: establishing a substantially uniform electrostatic charge on the OPC layer; exposing selected areas of the OPC layer to visible light to affect the charge thereon; developing the selected areas of the OPC layer with a triboelectrically charged dry-powdered, screen structure materials; fixing the screen structure materials to the underlying OPC layer with a suitable fixative; filming the screen structure materials; aluminizing the screen; and baking the aluminized screen.

Abstract: In accordance with the present invention, a method of electrophotographically manufacturing a luminescent screen assembly for a color CRT 10 on an interior surface of a faceplate panel 12 is described. A volatilizable organic conductive (OC) layer 32 is provided on the interior surface of the panel and a volatilizable organic photoconductive (OPC) layer 34 overlies the OC layer 32.

Abstract: In accordance with the present invention, a method of electrophotographically manufacturing a luminescent screen assembly on a photoreceptor disposed on an interior surface of a faceplate panel for a color CRT includes the steps of: charging the photoreceptor to establish a substantially uniform electrostatic voltage thereon; positioning the panel on an exposure device having a light source therein; exposing selected areas of the photoreceptor to visible light from the light source to affect the voltage thereon, without affecting the voltage on the unexposed area of the photoreceptor; and depositing a triboelectrically charged, first color-emitting phosphor onto the selected areas of the photoreceptor. The charging, positioning, exposing and depositing steps are repeated for a second and a third triboelectrically charged, color-emitting phosphor.

Abstract: In accordance with the present invention, a method of electrophotographically manufacturing a luminescent screen assembly on an interior surface of a faceplate panel 12 of a color CRT 10 comprises the steps of coating the interior surface of the panel with a volatilizable, organic conductive material to form an organic conductive (OC) layer 32, and overcoating the OC layer 32 with a volatilizable, photoconductive material to form an organic photoconductive (OPC) layer 34. Then, a substantially uniform voltage is established on the OPC layer 34, and selected areas of the OPC layer 34 are exposed to visible light to affect the voltage thereon, without affecting the voltage on the unexposed area of the OPC layer 34. Next, triboelectrically charged, light-absorbing screen structure material is deposited onto the unexposed area of the OPC layer 34 to form a substantially continuous matrix 23 of light-absorbing material having open areas therein.

Abstract: A method for fabricating a phosphor screen of a cathode ray tube which includes the steps of forming a light absorbing pattern on an inner surface of a panel of the cathode ray tube, applying a slurry of first phosphor on the inner surface of the panel, rotating the panel for drying the slurry of first phosphor around a first axis of rotation, exposing the first phosphor selectively so as to form a first phosphor pattern, applying a slurry of second phosphor on the inner surface of the panel, rotating the panel for drying the slurry of second phosphor around a second axis of rotation, exposing the second phosphor selectively so as to form a second phosphor pattern, applying a slurry of third phosphor on the inner surface of the panel, rotating the panel for drying the slurry of third phosphor around a third axis of rotation, and exposing the third phosphor selectively so as to form a third phosphor pattern, wherein the first, second and third axes of rotation are parallel to one another.

Abstract: The method of electrophotographically manufacturing a screen assembly on an interior surface of a faceplate panel for a color CRT, according to the present invention includes the step of forming a photoreceptor by sequentially coating the surface of the panel with a conductive solution to form a volatilizable conductive layer and then overcoating the conductive layer with an organic photoconductive solution comprising a suitable resin, an electron donor material, an electron acceptor material, a surfactant and an organic solvent to form a volatilizable photoconductive layer.

Abstract: A shadow mask includes a mask substrate having vertical and horizontal axes passing through a center of the substrate, and a number of substantially rectangular apertures. The apertures are arranged so that a plurality of vertical trains of apertures extending parallel to the vertical axis are arranged at predetermined intervals in the direction of the horizontal axis. Each of the apertures other than the apertures located on the vertical axis has a pair of outer corners distant from the vertical axis, a pair of inner corners less distant from the vertical-axis side, and a pair of bulging portions extending from the outer corners, respectively, outward in the horizontal direction. The farther each of the apertures is located from the vertical axis, the longer the bulging portions extend outward.

Abstract: The method of electrophotographically manufacturing a screen assembly on an interior surface of a viewing faceplate of a panel for a color CRT, according to the present invention, includes the steps of forming a volatilisable organic conductive layer on the interior surface of the viewing faceplate and overcoating the organic conductive layer with an organic photoconductive solution to form a volatilizable organic photoconductive layer. The conductive solution, comprising a polyelectrolyte and a diluent, is applied to the interior surface of the viewing faceplate by spraying, to form the conductive layer.

Abstract: The invention relates to a method of electrophotographically manufacturing a luminescent screen assembly for a color CRT by utilizing materials whose volatilizable constituents are substantially completely baked-out in the same step in which the faceplate panel is frit sealed to the funnel of the tube envelope. This method eliminates a dedicated panel bake before frit sealing of the panel to the funnel.

Abstract: At least partly overlapping patterns are formed on a substrate. The substrate is provided with a photosensitive layer which becomes tacky under the influence of light. The layer is exposed according to a pattern. A powder is provided on the exposed portions of the layer. The powder adheres to the exposed portions. Subsequently, the layer is again exposed according to a pattern which at least partly overlaps the first pattern. It has been found that a second powder adheres to the powder which has been provided first. In this manner, several powder layers can be provided on top or: each other on one photosensitive layer. This saves time.

Abstract: Respective phosphor layers (3R), (3G) and (3B) and a light absorption layer (2) are formed on the inner surface of a panel. An intermediate layer (11) is selectively formed on the surfaces of the respective phosphor layers by using a water soluble liquid having photosensitivity and containing water dispersion vinyl polymer emulsion and partial saponification polyvinyl acetate-system photosensitizer and then a metal-backing layer (12) is formed. A color purity of a phosphor screen can be increased and a brightness thereof can be improved.

Abstract: The method of electrophotographically manufacturing a screen assembly on an interior surface of a faceplate panel for a color CRT, according to the present invention, includes the steps of sequentially coating the surface of the panel with a conductive solution to form a volatilizable organic conductive layer and then overcoating the conductive layer with a photoconductive solution to form a volatilizable organic photoconductive layer. The conductive layer, comprising a quaternary ammonium polyelectrolyte and a surfactant, provides an electrode for the photoconductive layer and has improved electrical and physical properties compared to prior conductive layers.

Abstract: In a cathode-ray tube phosphor, a layer consisting of a substantially uniform SiO.sub.2 film or an organic film consisting essentially of at least one type of a polymer selected from the group consisting of an acrylic resin, gelatin, alginic acid, chitosan, and a urea resin is formed as a first layer on the surface of a phosphor particle, and a layer containing at least one type of a metal selected from the group consisting of Zn, Al, and an alkali earth metal and at least one member selected from the group consisting of a colloidal silica, an alumina sol, and a titania sol each having a particle size of 50 nm or less is formed as a second layer on the first layer. This phosphor is excellent in oxidation resistance and dispersibility.

Abstract: A plasma display panel comprises a front plate disposed on the side of a viewer, a rear plate disposed in parallel and opposing the front plate, and cell barriers arranged between the front and rear plates of matrix shape or linear shape. The cell barrier is formed of a material including a phosphor. The cell barriers are formed by printing multiple times a phosphor paste containing glass frit in an overlapped manner by a screen printing method. The cell barrier is formed in another method in which a positive pattern of cell barriers are formed on the front or rear plate by using photo resist, a slurry containing a phosphor fills in portions except for the pattern of the photo resist, and the photo resist is thereafter removed to thereby form cell barriers. In the case of the cell barrier of a color display PDP, the cell barrier may be composed of a material containing phosphor of different colors each with a width corresponding to a one half width of the cell barrier.

Abstract: A plate material for a shadow mask, consisting essentially of iron or of iron and nickel and having a surface configuration which stabilizes the adhesion between the plate material and a photoresist and improves the adhesion between the plate material and a negative pattern in the process of producing a shadow mask, thereby enabling improvements in the quality and the productivity, and which causes no annealing adhesion in the shadow mask softening annealing step in the process of producing a color picture tube. The plate material has a surface roughness Ra and a surface roughness projection condition Rsk, which are defined as follows:Ra: from 0.3 to 0.8.mu.mRsk: +0.1 or morewhere Ra is the surface roughness specified in JIS B 0601, and Rsk is a value representative of the relativity of an amplitude distribution curve to a mean line, i.e.

Abstract: A luminescent screen assembly for a CRT is made by first coating the interior surface of a faceplate panel with a photoconductive layer which overlies a conductive layer. A multiplicity of red-, green- and blue-emitting phosphor screen elements are then deposited in color groups, in a cyclic order, onto the interior surface of the panel. A negative charge is then established on the photoconductive layer. The charge is weakened in the areas where the photoconductive layer underlies the phosphor screen elements, but unaffected in the open areas separating the phosphor screen elements. The charged, open areas of the photoconductive layer are discharged by flood illumination and reversal developed by depositing thereon particles of light-absorptive matrix material having a triboelectric charge of the same polarity as the charge established on the photoconductive layer. The novel process provides a high opacity matrix.

Abstract: A method of forming a phosphor screen in which a color filter layer is formed between a phosphor layer and an inner surface of a panel having a slurry in which a fine particle pigment and transparent particles are dispersed into a photosensitive liquid coated on the inner surface of the panel. Then, the color filter layer is formed by exposure and development. When the color filter layer that constitutes one portion of a phosphor screen of a color cathode ray tube is formed in this manner, an adhesive force with which the color filter layer is bonded onto the panel can be increased and a transmittance of the color filter layer can be improved.

Abstract: A method is disclosed for manufacturing photostencils used in screening the faceplates of color cathode ray tubes. The photostencils are produced as progeny from a parent stencil photo plotted according to the dictates of a proximity photoprinting process in conjunction with the electron optical characteristics of the operational CRT. A rectangular beam is used for radiating light through the pattern of features on the parent stencil onto the photoresist of the progeny stencil. As a result, the features of the progeny stencil differ in size or shape or both, from those of the parent stencil.

Abstract: A curable composition comprising the following components (a), (b), (c) and (d) and/or (e):(a) a compound having one carboxyl group and one (meth)acryloyl group in the molecule,(b) a compound having two or more (meth)acryloyl groups in the molecule,(c) a levelling agent, and(d) a chain transfer agent and/or(e) a tertiary amine type photoinitiator; and a process for producing a shadow mask, comprising two etching steps, wherein the above curable composition is used as a secondary etching resist material.

Abstract: In order to manufacture a pair of main plates closely contacted with both the faces of a member to be exposed to light, patterns are drawn on a pair of original dry plates by a main pattern drawing device and developed. Thereafter, the developed pattern formed on one of the pair of original dry plates is successively transcribed even times in such a manner that a transcribed pattern having just formed on a newly supplied dry plate at a prior transcription is now transcribed to a fleshly supplied dry plate at a next transcription, and the developed pattern formed on the other one of the pair of original dry plate is successively transcribed odd times in such a manner that a transcribed pattern having just formed on a newly supplied dry plate at a prior transcription is now transcribed to a fleshly supplied dry plate at a next transcription, thereby forming a pair of main plates.

Abstract: According to this invention, there is provided an improved method of manufacturing a shadow mask obtained by independently etching both the surfaces of a metal substrate. After one surface is etched to form a first opening, an etching resistive agent composition containing an acrylic resin, casein, and a leveling agent is applied to the obtained opening to form an etching resistive layer. Subsequently, the other surface is etched to form a second opening in the other surface, and then the etching resistive layer is removed to cause the first and second openings to communicate with each other.

Abstract: A method for fabricating a cathode ray tube is described. The method comprises the steps of selectively forming a resist layer corresponding to a pattern of a fluorescent material on an inner surface of the panel of a cathode ray tube, and applying a slurry of a light-absorbing material on the entire inner surface of the panel including the resist layer to form a light-absorbing layer. An inorganic pigment slurry is applied over the entire inner surface of the panel to form an inorganic pigment layer on the light-absorbing layer and then subjected to reverse development to selectively remove the resist layer along with the light-absorbing layer and the white pigment layer, thereby forming a matrix pattern. Finally, a fluorescent material is applied to individual removed portions of the matrix pattern to form a fluorescent pattern. Monochromatic or color cathode ray tubes are obtained with an improved luminance and a colorimetric purity by a simple procedure.

Abstract: The metallic sheet for shadow mask comprises a Fe-Ni alloy sheet having mainly of Fe and Ni; degrees of planes on a surface of the alloy sheet, the degree of {331} plane being 14% or less, the degree of {210} plane 10% or less and the degree of {211} plane 10% or less; and a ratio of degrees of planes which is {210}/[{331}+{211}] being 0.2 to 1.Another thin metallic sheet for shadow mask comprises a Fe-Ni alloy sheet having mainly of Fe and Ni; degrees of planes on a surface of the alloy sheet, that of {111} plane being 5% or less, that of {100} plane 50 to 93%, that of {110} 24% or less, that of {311} plane 1 to 10%, that of {331} 1 to 14%, that of {210} plane 1 to 10% and that of {211} plane 1 to 10%; a ratio of degrees of planes which is [{100}+{311}+{210}]/[{110}+{111}+{331}+{211}] being 0.8 to 20.

Abstract: A method for manufacturing a screen for a cathode ray tube is provided comprising the steps of forming a first phosphor layer through coating a phosphor slurry containing a first phosphor, polyvinyl alcohol having a polymerization degree of 1,500 to 2,000 and distilled water on the inner surface of a panel, drying, exposing and developing the first phosphor layer, and then forming a second phosphor layer through coating a phosphor slurry containing a second phosphor, polyvinyl alcohol having a polymerization degree of 1,500 to 2,000 and distilled water on the surface of the first phosphor layer, drying, exposing and developing the second phosphor layer; wetting the surface of the first and second phosphor layers with distilled water; and forming a third phosphor layer through coating a phosphor slurry containing a third phosphor, polyvinyl alcohol having a polymerization degree of 500 to 600 and distilled water on the surface of the first and second phosphor layers, drying, exposing and developing the third p

Abstract: A method of forming a phosphor layer on the screen panel of a cathode-ray tube include the steps of charging phosphor slurry on the inside of the screen panel, rotating the screen panel to spread the phosphor slurry forming the phosphor layer, and exposing the screen panel to a light disposed in front of the inside of the screen panel and a plurality of lights disposed in front of the outside of the screen.

Abstract: An aperture pattern printing plate for manufacturing a shadow mask having an opaque layer form in parts on a surface of a transparent plate. The parts of the opaque layer corresponding to apertures in an effective area of the shadow mask. The opaque layer projecting from the transparent plate, and having a thickness of 30 to 50 .mu.m.

Abstract: A louvered plastic film has louvers including central regions with a relatively high coefficients of extinction and outer regions with relatively low coefficients of extinction. Such a film provides a dramatic reduction in ghost images.

Abstract: A luminescent screen assembly for a CRT is made by first coating the interior surface of a faceplate panel with a photoconductive layer which overlies a conductive layer. A multiplicity of red-, green- and blue-emitting phosphor screen elements are then deposited in color groups, in a cyclic order, onto the interior surface of the panel. A substantially uniform charge is established on the photoconductive layer. The charge is weakened in the areas where the photoconductive layer underlies the phosphor screen elements, but unaffected in the open areas separating the phosphor screen elements. The charged open areas of the photoconductive layer are directly developed by depositing thereon particles of light-absorptive matrix material having a triboelectric charge opposite in polarity to the charge established on the photoconductive layer.

Abstract: An emulsion covered photo printing plate for use in printing an etchant resist pattern on a light sensitive etchant resist located on a metal web covered with an etchant resist wherein the emulsion layer contains an exterior master pattern separated from an interior master pattern by a strip line with the interior master pattern having optically clear spacers located on top of the emulsion layer opaque projections and the nonopaque emulsion layer and the exterior emulsion layer having clear spacers located on top of the exterior emulsion layer with the area of the strip line being substantially devoid of spacers to provide evacuation channel past the strip line between the exterior master pattern and the interior master pattern.

Abstract: A coating apparatus for coating a sensitizing solution onto a surface of an elongated metal plate includes a transfer roller and a coating nozzle for coating the sensitizing solution on a circumferential surface of the roller. The circumferential surface of the transfer roller is in contact with the surface of the metal plate running in the longitudinal direction under a predetermined tension. The transfer roller is rotated in a direction opposite to that in which the metal plate is run, so that the coated sensitizing solution is transferred from the circumferential surface of the transfer roller on the surface of the metal plate.