Patents by Inventor Shoji Shiba

Shoji Shiba has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6312771
    Abstract: Disclosed herein is a process for production a color filter for liquid crystal display device by applying inks to a base by an ink-jet printing system to arrange colorants on the base, which comprises the steps of applying inks, which each comprise a homopolymer of a monomer represented by the formula (I) or of the formula (II) wherein R1 is H or CH3, and R2 and R3 are independently H or an alkyl group having 1 to 5 carbon atoms, and/or a copolymer of the monomer with another vinyl monomer and can be cured by light or heat, directly onto the base or onto a resin layer provided on the base by the ink-jet printing system, thereby arranging colorants contained in the inks; and then curing the thus-applied inks by light exposure or heating.
    Type: Grant
    Filed: May 5, 1999
    Date of Patent: November 6, 2001
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akio Kashiwazaki, Katsuhiro Shirota, Koichiro Nakazawa, Shoji Shiba, Masashi Hirose
  • Patent number: 6309783
    Abstract: A color filter comprising a substrate, a shielding layer formed on the substrate and having an opening, color mixing prevention barriers formed on the shielding layer, and colored portions formed between the color mixing prevention barriers, the optical density of the colorants in the colored portions being raised toward the substrate.
    Type: Grant
    Filed: December 21, 1999
    Date of Patent: October 30, 2001
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shoji Shiba, Hideaki Takao, Ryuichi Yokoyama, Masashi Sobue, Takeshi Okada
  • Patent number: 6245469
    Abstract: A manufacturing method for a color filter provided with spacers on a base unit having at least a coloring layer including a plurality of coloring portions, according to the present invention, comprises at least a step of forming a photoresist layer on the base unit, a step of forming throughholes in the photoresist layer extending to the base unit, a step of injecting a curable resin composition into the throughholes using an inkjet method, a step of curing the curable resin composition so as to form the spacers, and a step of removing the photoresist layer. In addition, a liquid crystal element of the present invention has a liquid crystal contained between a pair of substrates, in which one of the substrates is composed of a color filter manufactured by a method for manufacturing a color filter of the present invention.
    Type: Grant
    Filed: August 25, 2000
    Date of Patent: June 12, 2001
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shoji Shiba, Hiroshi Sato
  • Patent number: 6207948
    Abstract: A method for manufacturing a color filter colors a large number of filter elements on a substrate respectively in a predetermined color. A filter element is colored while an ink-jet head nozzle and the filter element are aligned. The method comprises a detection step of detecting the position of the filter element, a correction step of correcting a relative position of the filter element and a discharge nozzle for discharging coloring material, based on position information of the filter element detected at the detection step, so that the filter element and the discharge nozzle are aligned, and a coloring step of coloring the filter element by discharging the coloring material by the discharge nozzle.
    Type: Grant
    Filed: February 16, 1999
    Date of Patent: March 27, 2001
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hideto Yokoi, Hiroshi Sato, Katsuhiro Shirota, Takeshi Miyazaki, Akio Kashiwazaki, Shoji Shiba
  • Patent number: 6207329
    Abstract: Disclosed herein is a color filter equipped with a plurality of colored light-transmitting areas on its base, wherein the light-transmitting areas are colored with ink dots, and each of the colored portions is continuously formed over a plurality of the light-transmitting areas.
    Type: Grant
    Filed: September 13, 1999
    Date of Patent: March 27, 2001
    Assignee: Canon Kabushiki Kaisha
    Inventors: Katsuhiro Shirota, Hiroshi Sato, Makoto Akahira, Hideto Yokoi, Takeshi Miyazaki, Akio Kashiwazaki, Shoji Shiba
  • Patent number: 6180294
    Abstract: Provided is a color filter which comprises a substrate and a resin layer on the substrate, the resin layer containing a plurality of colored portions of different colors and non-colored portions.
    Type: Grant
    Filed: November 6, 1997
    Date of Patent: January 30, 2001
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shoji Shiba, Hiroshi Sato, Katsuhiro Shirota, Hideto Yokoi, Akio Kashiwazaki, Keiichi Murai, Takeshi Miyazaki
  • Patent number: 6177214
    Abstract: In a method of manufacturing a color filter, an ink-jet head discharges ink onto a substrate formed on a surface of an ink receiving layer and colors each pixel of the color filter. The ink-jet head discharges ink onto the position of each pixel by using an alignment mark as a reference which is formed on the ink receiving layer.
    Type: Grant
    Filed: May 27, 1998
    Date of Patent: January 23, 2001
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ryuichi Yokoyama, Katsuhiko Takano, Hideaki Takao, Masashi Sobue, Shoji Shiba, Takeshi Okada
  • Patent number: 6143450
    Abstract: A color filter substrate manufacturing method includes the steps of forming a black matrix having a plurality of first apertures of the same shape on a support substrate, forming a color filter by an ink jet system, and forming an alignment mark within an effective display region. The alignment mark includes a second aperture different in shape from the first apertures of the black matrix and is used to form the color filter.
    Type: Grant
    Filed: September 3, 1998
    Date of Patent: November 7, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masashi Sobue, Hideaki Takao, Ryuichi Yokoyama, Shoji Shiba, Takeshi Okada
  • Patent number: 6134059
    Abstract: Disclosed herein is a color filter equipped with a plurality of colored light-transmitting areas on its base, wherein the light-transmitting areas are colored with ink dots, and each of the colored portions is continuously formed over a plurality of the light-transmitting areas.
    Type: Grant
    Filed: January 24, 1995
    Date of Patent: October 17, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Katsuhiro Shirota, Hiroshi Sato, Makoto Akahira, Hideto Yokoi, Takeshi Miyazaki, Akio Kashiwazaki, Shoji Shiba
  • Patent number: 6127072
    Abstract: Disclosed herein is a process for producing a color filter substrate, which comprises the steps of forming a resin layer for coloration, which develops an ink-accepting property by irradiation of light, on a base; forming a light-screening layer on the resin layer for coloration; exposing the resin layer for coloration through the light-screening layer as a mask; and applying color inks to the resin layer for coloration.
    Type: Grant
    Filed: June 1, 1998
    Date of Patent: October 3, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shoji Shiba, Hideaki Takao, Ryuichi Yokoyama, Akio Kashiwazaki, Masashi Sobue, Takeshi Okada
  • Patent number: 6123863
    Abstract: A process for producing a liquid-jet recording head comprises the steps of providing a solid layer of a photosensitive material in a pattern of a liquid path on a substrate, providing at least a portion of a liquid path forming material on the substrate having the solid layer, and removing the solid layer from the substrate, wherein the solid layer is removed by use of at least one of methyl lactate, ethyl lactate, and butyl lactate, or a solvent which contains as a main component at least one of methyl lactate, ethyl lactate, and butyl lactate.
    Type: Grant
    Filed: December 20, 1996
    Date of Patent: September 26, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akihiko Shimomura, Isao Imamura, Shoji Shiba
  • Patent number: 6094247
    Abstract: Disclosed herein is a color filter comprising a transparent base on which a plurality of coloring members different in spectral characteristics from each other, and light-screening members are selectively arranged, wherein the light-screening member are arranged on a resin layer patterns provided on the base, and the coloring members are arranged in between the resin layer patterns.
    Type: Grant
    Filed: April 22, 1997
    Date of Patent: July 25, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takeshi Miyazaki, Keiichi Murai, Hiroshi Sato, Katsuhiro Shirota, Akio Kashiwazaki, Shoji Shiba
  • Patent number: 6025898
    Abstract: It is an object of the present invention to provide a color filter manufacturing method which can manufacture a low-cost color filter without causing any ink blurring, any color mixing, and any color omission. In order to achieve the object, according to the present invention, there is provided a color filter manufacturing method for a color filter formed by forming a layer to be colored on a transparent substrate, and discharging an ink colored in a predetermined color for coloring the layer, wherein when a numerical value of the thickness of the layer to be colored is assumed to be d (.mu.m) and a numerical value of the volume of the ink discharged at one discharge is to be Vo (p1: pico-liter), the thickness of the layer to be colored and the volume of the ink are adjusted to establish d>Vo/500.
    Type: Grant
    Filed: May 19, 1997
    Date of Patent: February 15, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akio Kashiwazaki, Hiroshi Sato, Katsuhiro Shirota, Hideto Yokoi, Takeshi Miyazaki, Shoji Shiba
  • Patent number: 5983486
    Abstract: A process for producing an ink jet head comprising a liquid-discharge energy generating element for discharging a liquid, a discharge opening, a liquid-flow path, and a substrate for holding the liquid-discharge energy generating element, the process comprises the steps of: preparing the substrate; providing on the substrate the liquid-discharge energy generating element; providing a solid layer with a convex shape on the surface of the substrate where the liquid-discharge energy generating element has been provided and at the part where the liquid-flow path and the discharge opening are to be provided, the solid layer being formed of a resin capable of being dissolved away; applying on the substrate provided with the solid layer a curable material in a thickness larger than the thickness of the solid layer, to cover the solid layer; curing the curable material; evenly removing the cured material until the convex portion of the solid layer is laid bare; and dissolving away the solid layer to form the liquid-f
    Type: Grant
    Filed: March 7, 1996
    Date of Patent: November 16, 1999
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akihiko Shimomura, Shoji Shiba, Isao Imamura, Kenji Aono
  • Patent number: 5956063
    Abstract: A method for manufacturing a color filter colors a large number of filter elements on a substrate respectively in a predetermined color. A filter element is colored while an ink-jet head nozzle and the filter element are aligned. The method comprises a detection step of detecting the position of the filter element, a correction step of correcting a relative position of the filter element and a discharge nozzle for discharging coloring material, based on position information of the filter element detected at the detection step, so that the filter element and the discharge nozzle are aligned, and a coloring step of coloring the filter element by discharging the coloring material by the discharge nozzle.
    Type: Grant
    Filed: September 7, 1995
    Date of Patent: September 21, 1999
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hideto Yokoi, Hiroshi Sato, Katsuhiro Shirota, Takeshi Miyazaki, Akio Kashiwazaki, Shoji Shiba
  • Patent number: 5948576
    Abstract: Disclosed herein is a color filter equipped with a plurality of colored light-transmitting areas on its base, wherein the light-transmitting areas are colored with ink dots, and each of the colored portions is continuously formed over a plurality of the light-transmitting areas.
    Type: Grant
    Filed: May 15, 1997
    Date of Patent: September 7, 1999
    Assignee: Canon Kabushiki Kaisha
    Inventors: Katsuhiro Shirota, Hiroshi Sato, Makoto Akahira, Hideto Yokoi, Takeshi Miyazaki, Akio Kashiwazaki, Shoji Shiba
  • Patent number: 5946014
    Abstract: An ink tank cartridge having ink-storing part for storing ink to be supplied to a recording head which ejects ink in droplets and being mountable to and demountable from a recording apparatus, the ink tank cartridge comprises a main body of a container constituting the ink-storing part; an ink-absorbent held in the main body of the container for storing the ink; an ink-supplying part for supplying the ink to the recording head; and an air communication part to communicate the interior of the main body of the container with the air, the air communication part having a large-diameter opening capable of opening the interior of the main body of the container to the outside and being provided with a plug member having a fine opening attachably to and detachably from the large-diameter opening.
    Type: Grant
    Filed: May 22, 1995
    Date of Patent: August 31, 1999
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akihiko Shimomura, Hajime Kishida, Makoto Shioya, Osamu Sato, Shoji Shiba, Yoichi Taneya, Mariko Suzuki
  • Patent number: 5922401
    Abstract: Disclosed herein is a process for producing a color filter for liquid crystal display device by applying inks to a base by an ink-jet printing system to arrange colorants on the base, which comprises the steps of applying inks, which each comprise a homopolymer of a monomer represented by the formula (I) ##STR1## or of the formula (II) ##STR2## wherein R.sub.1 is H or CH.sub.3, and R.sub.2 and R.sub.3 are independently H or an alkyl group having 1 to 5 carbon atoms, and/or a copolymer of the monomer with another vinyl monomer and can be cured by light or heat, directly onto the base or onto a resin layer provided on the base by the ink-jet printing system, thereby arranging colorants contained in the inks; and then curing the thus-applied inks by light exposure or heating.
    Type: Grant
    Filed: June 25, 1997
    Date of Patent: July 13, 1999
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akio Kashiwazaki, Katsuhiro Shirota, Koichiro Nakazawa, Shoji Shiba, Masashi Hirose
  • Patent number: 5916452
    Abstract: A process for producing an ink jet head having ink discharging outlets, a substrate with energy generating elements that discharge ink, ink pathways aligned with the energy generating elements and communicated with the ink discharging outlets, and a liquid chamber for storing and supplying ink into the ink pathways.
    Type: Grant
    Filed: December 5, 1995
    Date of Patent: June 29, 1999
    Assignee: Canon Kabushiki Kaisha
    Inventors: Junichi Kobayashi, Shoji Shiba, Toshiaki Hirosawa, Toru Yamane
  • Patent number: 5898208
    Abstract: A color filter is provided which has picture elements arranged adjacently on a substrate, each picture element comprising a red segmental layer, a green segmental layer, and a blue segmental layer, wherein at least one color of the segmental layers is colored with a dye, and at least one of the other colors of the segmental layers is colored with a pigment.
    Type: Grant
    Filed: November 12, 1997
    Date of Patent: April 27, 1999
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takeshi Miyazaki, Hiroshi Sato, Katsuhiro Shirota, Hideto Yokoi, Akio Kashiwazaki, Shoji Shiba