Patents by Inventor Kaori Kawa

Kaori Kawa 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).

  • Photocurable ink, ink container, and image forming method
    Patent number: 10850531
    Abstract: A photocurable ink contains a polymerizable compound and a photopolymerization initiator, and this ink contains a low boiling point solvent having a boiling point of 40° C. to 120° C. at one atmospheric pressure and at least one particle having a surface on which an unsaturated hydrocarbon group is provided.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: December 1, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshinori Kotani, Motokazu Kobayashi, Takeshi Honma, Kaori Kawa, Shiori Yonezawa
  • Photocurable ink, ink container, and image forming method
    Patent number: 10570298
    Abstract: A photocurable ink containing a first liquid containing a polymerizable compound and a photopolymerization initiator, and a second liquid that is incompatible with the first liquid, in which droplets formed by the second liquid are dispersed in the first liquid, wherein the photocurable ink contains first particles and second particles having higher hydrophilicity than that of the first particles, wherein the first particles are adsorbed on an interface between the first liquid and the second liquid, and the second particles are present in the second liquid.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: February 25, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takeshi Honma, Motokazu Kobayashi, Yoshinori Kotani, Shiori Yonezawa, Kaori Kawa
  • Photo-curable ink, ink cartridge, and image forming method
    Patent number: 10351719
    Abstract: A photo-curable ink contains an oil-based liquid containing a polymerizable compound and a photopolymerization initiator, and an aqueous liquid containing water. When the photo-curable ink is stirred at a rotational speed of 15000 rpm or more for 3 minutes and then allowed to stand at 25° C. for one hour or more, droplets formed with the aqueous liquid are dispersed in the oil-based liquid without layer separation between the oil-based liquid and the aqueous liquid.
    Type: Grant
    Filed: July 29, 2016
    Date of Patent: July 16, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takeshi Honma, Motokazu Kobayashi, Yoshinori Kotani, Kenichi Iida, Shiori Yonezawa, Kazumi Iwashita, Kaori Kawa
  • PHOTOCURABLE INK, INK CONTAINER, AND IMAGE FORMING METHOD
    Publication number: 20190031902
    Abstract: A photocurable ink contains a polymerizable compound and a photopolymerization initiator, and this ink contains a low boiling point solvent having a boiling point of 40° C. to 120° C. at one atmospheric pressure and at least one particle having a surface on which an unsaturated hydrocarbon group is provided.
    Type: Application
    Filed: September 28, 2018
    Publication date: January 31, 2019
    Inventors: Yoshinori Kotani, Motokazu Kobayashi, Takeshi Honma, Kaori Kawa, Shiori Yonezawa
  • PHOTO-CURABLE INK, INK CARTRIDGE, AND IMAGE FORMING METHOD
    Publication number: 20180208784
    Abstract: A photo-curable ink contains an oil-based liquid containing a polymerizable compound and a photopolymerization initiator, and an aqueous liquid containing water. When the photo-curable ink is stirred at a rotational speed of 15000 rpm or more for 3 minutes and then allowed to stand at 25° C. for one hour or more, droplets formed with the aqueous liquid are dispersed in the oil-based liquid without layer separation between the oil-based liquid and the aqueous liquid.
    Type: Application
    Filed: July 29, 2016
    Publication date: July 26, 2018
    Inventors: Takeshi Honma, Motokazu Kobayashi, Yoshinori Kotani, Kenichi Iida, Shiori Yonezawa, Kazumi Iwashita, Kaori Kawa
  • PHOTOCURABLE INK, INK CONTAINER, AND IMAGE FORMING METHOD
    Publication number: 20180127608
    Abstract: A photocurable ink containing a first liquid containing a polymerizable compound and a photopolymerization initiator, and a second liquid that is incompatible with the first liquid, in which droplets formed by the second liquid are dispersed in the first liquid, wherein the photocurable ink contains first particles and second particles having higher hydrophilicity than that of the first particles, wherein the first particles are adsorbed on an interface between the first liquid and the second liquid, and the second particles are present in the second liquid.
    Type: Application
    Filed: October 31, 2017
    Publication date: May 10, 2018
    Inventors: Takeshi Honma, Motokazu Kobayashi, Yoshinori Kotani, Shiori Yonezawa, Kaori Kawa