Patents by Inventor Koromo Shirota

Koromo Shirota 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).

  • Publication number: 20190217648
    Abstract: An object of the present invention is to provide a thermal transfer recording sheet that provides an image that is excellent in light fastness and has a satisfactory imbalance. The present invention relates to a thermal transfer recording sheet including a substrate and dye layers (a yellow dye layer, a magenta dye layer, and a cyan dye layer), in which one or more kinds of the dye layers each contain one or more kinds of specific compounds. The present invention also relates to a thermal transfer recording sheet including a substrate, dye layers, and a protective layer for protecting the surface of an image, in which the protective layer contains one or more kinds of specific compounds.
    Type: Application
    Filed: March 25, 2019
    Publication date: July 18, 2019
    Inventors: Yuko Katsumoto, Koromo Shirota, Tsuyoshi Santo, Taichi Shintou, Hajime Muta, Tomoyuki Noda
  • Patent number: 10195886
    Abstract: A thermal transfer recording sheet set includes an image-receiving sheet that includes an image-receiving layer containing a compound represented by general formula (1) or (2) and an ink sheet that includes a yellow coloring material layer containing a particular dye and a cyan coloring material layer containing a particular dye.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: February 5, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tsuyoshi Santo, Yuko Katsumoto, Koromo Shirota, Taichi Shintou, Hajime Muta, Tomoyuki Noda
  • Patent number: 10179858
    Abstract: The present invention provides a compound having a high chroma and also excellent dispersibility. The compound described above is represented by the following formula (1).
    Type: Grant
    Filed: August 12, 2016
    Date of Patent: January 15, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Taichi Shintou, Koromo Shirota, Yuko Katsumoto
  • Publication number: 20180273757
    Abstract: The present invention provides a compound having a high chroma and also excellent dispersibility. The compound described above is represented by the following formula (1).
    Type: Application
    Filed: August 12, 2016
    Publication date: September 27, 2018
    Inventors: Taichi Shintou, Koromo Shirota, Yuko Katsumoto
  • Publication number: 20180237640
    Abstract: A thermal transfer recording sheet includes a base material and, on the base material, a yellow-dye layer containing a yellow dye, a magenta-dye layer containing a magenta dye, and a cyan-dye layer containing a cyan dye. The yellow dye and the cyan dye contain compounds having specific structures.
    Type: Application
    Filed: February 14, 2018
    Publication date: August 23, 2018
    Inventors: Taichi Shintou, Koromo Shirota, Yuko Katsumoto, Tsuyoshi Santo, Hajime Muta, Tomoyuki Noda
  • Publication number: 20180215922
    Abstract: An object is to provide a compound having high color developability and excellent heat resistance, and a resist composition for a color filter and a color filter that contain the dye composition. Another object is to provide a dyed polyamide fiber product having excellent wet rubbing fastness.
    Type: Application
    Filed: January 11, 2018
    Publication date: August 2, 2018
    Inventors: Hajime Muta, Yuko Katsumoto, Koromo Shirota, Taichi Shintou, Tsuyoshi Santo
  • Publication number: 20180170085
    Abstract: In a thermal transfer recording sheet including a base material and a colorant layer, the colorant layer includes a yellow dye layer containing a yellow dye, a magenta dye layer containing a magenta dye, and a cyan dye layer containing a cyan dye, and the cyan dye includes a compound represented by Formula (Ia) or Formula (Ib): where R1 to R7 are substituents, X? is an anion, and the compound of Formula (Ib) has at least one anionic substituent.
    Type: Application
    Filed: December 15, 2017
    Publication date: June 21, 2018
    Inventors: Taichi Shintou, Masahiro Suenaga, Koromo Shirota, Yuko Katsumoto, Tsuyoshi Santo, Hajime Muta, Tomoyuki Noda
  • Publication number: 20180147875
    Abstract: A thermal transfer recording sheet set includes an image-receiving sheet that includes an image-receiving layer containing a compound represented by general formula (1) or (2) and an ink sheet that includes a yellow coloring material layer containing a particular dye and a cyan coloring material layer containing a particular dye.
    Type: Application
    Filed: November 21, 2017
    Publication date: May 31, 2018
    Inventors: Tsuyoshi Santo, Yuko Katsumoto, Koromo Shirota, Taichi Shintou, Hajime Muta, Tomoyuki Noda
  • Patent number: 9701146
    Abstract: An ink set contains a first ink containing a compound in which a pyrazolone ring and a thiazole ring are bonded and a second ink containing a compound in which a pyrazolone ring and a pyridinedione ring are bonded. A thermal transfer recording sheet has a first ink layer containing a compound in which a pyrazolone ring and a thiazole ring are bonded and a second ink layer containing a compound in which a pyrazolone ring and a pyridinedione ring are bonded.
    Type: Grant
    Filed: April 15, 2016
    Date of Patent: July 11, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Koromo Shirota, Taichi Shintou, Masao Nakano
  • Patent number: 9650367
    Abstract: A lightfast orange color compound is provided. The compound has a structure including a pyrazolone ring and a thiazole ring that are bound to each other.
    Type: Grant
    Filed: April 15, 2016
    Date of Patent: May 16, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Taichi Shintou, Masao Nakano, Koromo Shirota
  • Publication number: 20160303882
    Abstract: An ink set contains a first ink containing a compound in which a pyrazolone ring and a thiazole ring are bonded and a second ink containing a compound in which a pyrazolone ring and a pyridinedione ring are bonded. A thermal transfer recording sheet has a first ink layer containing a compound in which a pyrazolone ring and a thiazole ring are bonded and a second ink layer containing a compound in which a pyrazolone ring and a pyridinedione ring are bonded.
    Type: Application
    Filed: April 15, 2016
    Publication date: October 20, 2016
    Inventors: Koromo Shirota, Taichi Shintou, Masao Nakano
  • Publication number: 20160304508
    Abstract: A lightfast orange color compound is provided. The compound has a structure including a pyrazolone ring and a thiazole ring that are bound to each other.
    Type: Application
    Filed: April 15, 2016
    Publication date: October 20, 2016
    Inventors: Taichi Shintou, Masao Nakano, Koromo Shirota
  • Patent number: 7637581
    Abstract: An ink jet recording method of ejecting ink using an ink jet head substrate provided with a heat generating resistor which is coated with a protecting film, wherein the ink is ejected by a pressure produced by generation of a bubble created by film boiling of the ink caused by application of thermal energy to the ink through the protecting film, the thermal energy being generated by driving of the heat generating resistor, the improvement residing in that: there is provided a recording mode in which the ink is ejected with a maximum temperature at the surface of the protecting film which is contacted to the ink not higher than 560° C.
    Type: Grant
    Filed: March 21, 2007
    Date of Patent: December 29, 2009
    Assignee: Canon Kabushiki Kaisha
    Inventors: Koromo Shirota, Teruo Ozaki, Masahiko Kubota, Ryuji Katsuragi, Hidehiko Kanda
  • Patent number: 7517073
    Abstract: To suppress curling phenomenon of a recording medium to which a liquid composition is applied while securing ejection stability. A liquid composition for used in an image recording method including the steps of applying an ink containing a colorant in a dissolved state or a dispersed state to a recording medium and applying to the recording medium a liquid composition which destabilizes the dissolved state or the dispersed state of the colorant in the ink by coming into contact with the ink, the liquid composition including at least a polyvalent metal ion, water, and water-soluble organic compounds 1 and 2, in which a content X (mass %) of the water-soluble organic compound 1 in the liquid composition is 15 mass % or more, and the content X (mass %) of the water-soluble organic compound 1 in the liquid composition and a content Y (mass %) of the water-soluble organic compound 2 in the liquid composition satisfy a specific relationship.
    Type: Grant
    Filed: September 14, 2005
    Date of Patent: April 14, 2009
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yasuhiro Nito, Shinichi Hakamada, Koromo Shirota, Kenji Shinjo, Yutaka Kurabayashi, Masashi Tsujimura
  • Patent number: 7517074
    Abstract: The present invention can sufficiently suppress curling phenomenon of a recorded product and facilitate handling of a printed product produced by using plain paper, in particular. The present invention provides a printing medium coating solution including water and a water-retentive, water-soluble organic compound, wherein the water-soluble organic compound includes only a water-soluble organic compound showing a difference of 36% or less between the water retention ability at a temperature of 23° C. and a humidity of 45% and the water retention ability at a temperature of 30° C. and a humidity of 80%; and the content of the water-soluble organic compound is 15 mass % or more with respect to the total amount of the printing medium coating solution.
    Type: Grant
    Filed: February 26, 2007
    Date of Patent: April 14, 2009
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shinichi Hakamada, Yasuhiro Nito, Koromo Shirota, Kenji Shinjo, Yutaka Kurabayashi, Tetsu Iwata
  • Patent number: 7297194
    Abstract: Ink jet ink which sufficiently suppresses curling phenomenon of printed matters and satisfies ejection stability, the ink comprising at least water, a colorant, a water-soluble organic compound 1 and a water-soluble organic compound 2, wherein the content X(%) of the water-soluble organic compound 1 is 10 mass % or more based on the total amount of the ink jet ink and the content X(%) of the water-soluble organic compound 1 and the content Y(%) of the water-soluble organic compound 2 based on the total amount of the ink jet ink satisfy the relation of the following formula (I) and formula (II): 0<Y/X?0.9, ??(I) X+Y?15 mass %, ??(II) and wherein the water-soluble organic compound 1 is a water-retentive, water-soluble organic compound having a difference between the water retention ability in an environment of a temperature of 23° C. and a humidity of 45% and the water retention ability in an environment of a temperature of 30° C.
    Type: Grant
    Filed: September 7, 2005
    Date of Patent: November 20, 2007
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kenji Shinjo, Koromo Shirota, Yutaka Kurabayashi, Minako Kawabe
  • Publication number: 20070159512
    Abstract: An ink jet recording method of ejecting ink using an ink jet head substrate provided with a heat generating resistor which is coated with a protecting film, wherein the ink is ejected by a pressure produced by generation of a bubble created by film boiling of the ink caused by application of thermal energy to the ink through the protecting film, the thermal energy being generated by driving of the heat generating resistor, the improvement residing in that: there is provided a recording mode in which the ink is ejected with a maximum temperature at the surface of the protecting film which is contacted to the ink not higher than 560° C.
    Type: Application
    Filed: March 21, 2007
    Publication date: July 12, 2007
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: KOROMO SHIROTA, TERUO OZAKI, MASAHIKO KUBOTA, RYUJI KATSURAGI, HIDEHIKO KANDA
  • Publication number: 20070134451
    Abstract: The present invention can sufficiently suppress curling phenomenon of a recorded product and facilitate handling of a printed product produced by using plain paper, in particular. The present invention provides a printing medium coating solution including water and a water-retentive, water-soluble organic compound, wherein the water-soluble organic compound includes only a water-soluble organic compound showing a difference of 36% or less between the water retention ability at a temperature of 23° C. and a humidity of 45% and the water retention ability at a temperature of 30° C. and a humidity of 80%; and the content of the water-soluble organic compound is 15 mass % or more with respect to the total amount of the printing medium coating solution.
    Type: Application
    Filed: February 26, 2007
    Publication date: June 14, 2007
    Applicant: Canon Kabushiki Kaisha
    Inventors: Shinichi Hakamada, Yasuhiro Nito, Koromo Shirota, Kenji Shinjo, Yutaka Kurabayashi, Tetsu Iwata
  • Patent number: 7219971
    Abstract: An ink jet recording method for ejecting ink using an ink jet head substrate provided with a heat generating resistor, which is coated with a protection film, wherein the ink is ejected by a pressure produced by generation of a bubble, the bubble being created by film boiling of the ink caused by the application of thermal energy to the ink through the protection film, the thermal energy being generated by driving of the heat generating resistor, the improvement residing in that: there is provided a recording mode in which the ink is ejected with a maximum temperature at the surface of the protection film, which is contacted to the ink, not higher than 560° C.
    Type: Grant
    Filed: October 3, 2000
    Date of Patent: May 22, 2007
    Assignee: Canon Kabushiki Kaisha
    Inventors: Koromo Shirota, Teruo Ozaki, Masahiko Kubota, Ryuji Katsuragi, Hidehiko Kanda
  • Patent number: 7208032
    Abstract: The present invention can sufficiently suppress curling phenomenon of a recorded product and facilitate handling of a printed product produced by using plain paper, in particular. The present invention provides a printing medium coating solution including water and a water-retentive, water-soluble organic compound, wherein the water-soluble organic compound includes only a water-soluble organic compound showing a difference of 36% or less between the water retention ability at a temperature of 23° C. and a humidity of 45% and the water retention ability at a temperature of 30° C. and a humidity of 80%; and the content of the water-soluble organic compound is 15 mass % or more with respect to the total amount of the printing medium coating solution.
    Type: Grant
    Filed: September 13, 2005
    Date of Patent: April 24, 2007
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shinichi Hakamada, Yasuhiro Nito, Koromo Shirota, Kenji Shinjo, Yutaka Kurabayashi, Tetsu Iwata