摘要:
The present invention provides a metal foil tube with a thickness of 10 to 100 μm and a method and apparatus of production of the metal foil tube enabling even an extremely thin metal foil to be reliably finished into a tube, that is, a metal foil tube comprised of a metal foil sheet W with a thickness t of 10 to 100 μm joined by welding, the method of production of the metal foil tube shaping the metal foil sheet W to form an overlap part G, then welding the facing sides and finishing the weld zone part flat.
摘要:
In a method of manufacturing a color cathode ray tube utilizing an external surface exposure process, a fluorescent slurry to be applied to a panel contains a photosensitive resin composition composed of an aqueous emulsion of polyvinyl compound resin containing a saponified polyvinyl acetate with an addition-condensed photosensitive group as a protective colloid and an aqueous solution of a saponified polyvinyl acetate with an addition-condensed photosensitive group. Accordingly, a resistance of a fluorescent layer formed on the panel against an aqueous solution of hydrogen peroxide is improved, and an anti-fogging performance of the fluorescent layer is also improved.
摘要:
A method for forming a phosphor pattern on a panel of a cathode ray tube to prevent the peeling of a black matrix from the glass panel when treated with an inversion solvent which involves forming a protective film of a transparent photosensitive material on a glass panel on which a black matrix is formed and using the so-called outer surface exposure method to produce a color cathode ray tube having high definition.
摘要:
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.
摘要:
Carbonaceous particles and carbonaceous fibers whose surfaces are covered with a boron nitride thin film, wherein the atomic concentration of boron C(B), the atomic concentration of carbon C(C) and the atomic concentration of nitrogen C(N) satisfy the following inequalities: 0.05