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Inventor:
Ohtake; Yasuhisa
Address:
Fukaya, JP
No. of patents:
27
Patents:












Patent Number Title Of Patent Date Issued
6117774 Method for manufacturing shadow mask and etching-resistant layer-coating apparatus September 12, 2000
A method of manufacturing a shadow mask by making use of a coating apparatus, wherein a gravure roll 20 mm to 60 mm in diameter is disposed below a metallic thin plate and any supporting member is not disposed at an opposite side portion of the metallic thin plate to be contacted with
6060112 Color cathode ray tube and method of manufacturing the same May 9, 2000
A color cathode ray tube is disclosed in which a coating containing an aluminum-phosphorus compound and fine particles of at least one of tungsten oxide and bismuth oxide is formed on the surface of a shadow mask on the side of an electron gun.
5841223 Color cathode ray tube and method of manufacturing the same November 24, 1998
A color cathode ray tube is disclosed in which a coating containing an aluminum phosphorus compound and fine particles of at least one of tungsten oxide and bismuth oxide and is formed on the surface of a shadow mask on the side of an electron gun.
5830373 Color cathode ray tube and method of manufacturing shadow mask November 3, 1998
A color cathode ray tube has a face panel, a phosphor screen formed on an inner surface of the face panel, an electron gun for emitting electron beams toward the phosphor screen, and a shadow mask arranged between the electron gun and the face panel to oppose the phosphor screen. The sha
5635320 Color cathode ray tube and method manufacturing the same June 3, 1997
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
5592044 Color cathode ray tube and method of manufacturing shadow mask January 7, 1997
A color cathode ray tube has a face panel, a phosphor screen formed on an inner surface of the face panel, an electron gun for emitting electron beams toward the phosphor screen, and a shadow mask arranged between the electron gun and the face panel to oppose the phosphor screen. The sha
5578898 Shadow mask and cathode ray tube November 26, 1996
A shadow mask with a low thermal expandability of an Fe--Ni-based alloy and a high surface hardness is disclosed. This shadow mask includes a mask main body consisting of an Fe--Ni-based alloy containing iron and nickel as main constituents, a large number of fine electron beam apertures
5532088 Shadow mask plate material and shadow mask July 2, 1996
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.
5411822 Shadow mask for color cathode ray tube, shadow mask printing negative plate used for manufacture May 2, 1995
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 ax
5280215 Shadow mask for color cathode ray tube January 18, 1994
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 ax
5260153 Aperture pattern printing plate November 9, 1993
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
5134015 Aperture pattern-printing plate for shadow mask and method for manufacturing the same July 28, 1992
An aperture pattern-printing plate used for manufacturing a shadow mask, which comprises a transparent substrate, and an emulsion layer which is formed on the transparent substrate and which is opaque at portions corresponding to apertures of the shadow mask and transparent at other
5128224 Method of manufacturing an aperture pattern printing plate July 7, 1992
A method of manufacturing an aperture pattern printing plate in a limited number of steps using only one original printing plate. The method produces transparent portions on a portion of the printing plate corresponding to a non-effective area of a shadow mask, and opaque portions on
5006432 Method for manufacturing a shadow mask April 9, 1991
A shadow mask is formed by forming two photosensitive resin layers respectively on both major surfaces of a band-like metal sheet. The first resin layer is formed by coating a resin solution on the first major surface with the first major surface directed upward, and drying the solut
4846747 Shadow mask, and method of manufacturing the same July 11, 1989
An ingot of an Invar alloy is rolled in one direction into a plate, a number of slot holes are formed in this plate, and the plate is pressed into a curved form, thus providing a shadow mask of a color CRT. The slot holes of this shadow mask have longitudinal axes extending substantially
4827178 Image display tube May 2, 1989
An image display tube constructed by use of in-tube parts comprising an alloy constituting essentially of (i) at least one of 0.5 to 4% by weight of Ti, 0.1 to 3.0% by weight of Al, 0 to 1% by weight of C, 0 to 5% by weight of Co, 0 to 12% by weight of Mo, 0 to 5% by weight of W, 0 to 4%
4771213 Shadow mask September 13, 1988
A cast ingot of an invar alloy is forged, hot-and cold-rolled, annealed and subjected to a controlled rolling to provide a shadow mask plate. An X-ray diffraction pattern is formed in an electron-beam hole-formation surface of the shadow mask plate, and a draft in a controlled rolling st
4724012 Material for in-tube components and method of manufacturing it February 9, 1988
In-tube component material for an electronic tube such as a color cathode ray tube, of low thermal expansion coefficient and grain size 2,000-40,000 grains/mm.sup.2, containing Fe as the main constituent and 25-45 wt % Ni, 0.3-10 wt % Cr, and 0-10 wt % Co, and a method of manufacturing i
4708680 Color picture tube and method for manufacturing the same November 24, 1987
A color picture tube comprises a shadow mask which is formed to, oppose at a small gap therefrom, a phosphor screen formed on the inner surface of a panel. The shadow mask comprises a sheet of a nickel-containing iron alloy which contains 0.1% by weight or less of manganese and having an
4698545 Color picture tube having a shadow mask with a Cr enriched layer October 6, 1987
Color picture tube in which a tube element, e.g., the shadow mask, is constituted by an Fe alloy to which 25-45 wt % of Ni and at least some Cr are added. A Cr rich layer is formed on the tube element surface and black oxide film with a spinel structure containing Cr is formed on the sur
4689114 Method for manufacturing a shadow mask August 25, 1987
In a method for manufacturing a shadow mask, the both surfaces of a metal sheet, except those regions in which small and large openings are to be formed, are coated with resist films. The upper surface of the metal sheet is further coated with an organic synthetic film. An etching soluti
4662984 Method of manufacturing shadow mask May 5, 1987
A method of perforating through pores by etching in the manufacture of a shadow mask. This perforating method comprises the steps of selectively covering both surfaces of a thin metal plate with etching resistant film except a predetermined pore region; performing an etching to form rece
4612061 Method of manufacturing picture tube shadow mask September 16, 1986
A method of manufacturing a picture tube shadow mask wherein a thin metal plate containing iron and nickel as major components is first etched to form a plurality of mask apertures, then, annealing of the metal plate is performed and, after being cooled in a reducing atmosphere, a darken
4585518 Method of manufacturing shadow mask April 29, 1986
A method of manufacturing a shadow mask having apertures of precise shape and size, comprises the steps of forming an etching-protective film having a pattern of a number of apertures on a surface of a thin metal plate containing iron and nickel as major components, and etching the thin
4565755 Method of manufacturing shadow mask January 21, 1986
A method of manufacturing a shadow mask comprises the steps of: forming photoresist films on two major surfaces of a sheet made of a shadow mask material; forming latent images by selectively exposing the photoresist films, respectively; developing the latent images to form photoresist f
4528246 Shadow mask July 9, 1985
Disclosed is a shadow mask comprising an alloy such as an inver type alloy and having {100} texture on a mask face. Also disclosed is a useful process for preparing the shadow mask.
4482334 Method for making CRT shadow masks November 13, 1984
A method of making a mask arrangement including two (2) or more of masks for a mask-focusing color picture tube and the mask arrangement formed by the method. A plurality of apertured flat masks, each mask comprising an effective portion having apertures and a non-effective portion surro










 
 
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