Patents by Inventor Yuko Negishi

Yuko Negishi 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: 20240123738
    Abstract: Provided is an ink jet recording method which can record an image excellent in abrasion resistance and in which an ink after storage is excellent in filter passability. The ink jet recording method includes ejecting an aqueous ink to a recording medium to record an image with an ink jet recording apparatus including: the aqueous ink; an ink storage bag configured to store the aqueous ink; and a recording head of an ink jet system configured to eject the aqueous ink. The recording head includes, in an inside thereof, a filter configured to pass the aqueous ink therethrough. The aqueous ink contains a pigment, a wax, a dispersant for dispersing the wax and a resin particle.
    Type: Application
    Filed: October 13, 2023
    Publication date: April 18, 2024
    Inventors: YUKO NEGISHI, EIICHI NAKATA, NAO ISHIJIMA
  • Publication number: 20210187938
    Abstract: An inkjet recording method of the present disclosure is an inkjet recording method of recording an image on a recording medium using an aqueous ink. Coating wax on a transfer body; applying an aqueous reaction solution containing a reaction agent reacting with the aqueous ink to the transfer body; forming an intermediate image by applying the aqueous ink to the transfer body; and transferring the intermediate image by bringing the intermediate image into contact with the recording medium are included in this order, and a surface temperature Ta (° C.) of the transfer body at a position where the intermediate image contacts the recording medium, a surface temperature Tb (° C.) of the transfer body at a position where the intermediate image is separated from the transfer body and a melting point Tm (° C.) of the wax satisfy a relationship of Tb<Tm?Ta.
    Type: Application
    Filed: December 14, 2020
    Publication date: June 24, 2021
    Inventors: Toru Ohnishi, Tsuyoshi Kanke, Sayoko Nagashima, Kanako Soma, Mikio Sanada, Satoshi Takebayashi, Yuko Negishi, Tetsuya Kosuge, Satoshi Kudo, Naofumi Shimomura, Ryo Taguri
  • Patent number: 10125283
    Abstract: An aqueous ink containing a self-dispersible pigment for use in an ink jet recording method using a recording head that ejects an ink by an action of thermal energy. The aqueous ink contains a compound represented by General Formula (I): where in General Formula (I) R1's are independently of each other, a sulfonic acid group, a carboxylic acid group, a phosphoric acid group or a phosphonic acid group, R2 is a hydrogen atom or an alkyl group, and n is an integer of 1 to 5.
    Type: Grant
    Filed: November 30, 2016
    Date of Patent: November 13, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yojiro Kojima, Yuko Negishi, Yoshihisa Yamashita
  • Patent number: 10022981
    Abstract: An aqueous ink for ink jet containing a self-dispersible pigment, a compound represented by General Formula (I): where in General Formula (I) each R1 independently represents a hydrogen atom or an alkyl group.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: July 17, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Fumiaki Fujioka, Yoshihisa Yamashita, Yuko Negishi
  • Patent number: 9994012
    Abstract: An ink jet recording method comprising ejecting an ink from a recording head to record an image on a recording medium using an ink jet recording apparatus. The ink jet recording apparatus includes a main tank having an air communication part, a sub tank, and a recording head. The ratio of the maximum ink storage amount of the main tank to the maximum ink storage amount of the sub tank is 3.0 or more to 50.0 or less. The temperature of the ink in the sub tank is higher than the temperature of the ink in the main tank. The ink contains a coloring material and a particular surfactant.
    Type: Grant
    Filed: June 1, 2016
    Date of Patent: June 12, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yuko Negishi, Soichi Nagai, Tomohiro Yamashita
  • Patent number: 9956761
    Abstract: An aqueous ink for ink jet containing a self-dispersible pigment, an aromatic sulfinic acid or a salt thereof and an aromatic sulfonic acid or a salt thereof.
    Type: Grant
    Filed: December 2, 2016
    Date of Patent: May 1, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshihisa Yamashita, Yuko Negishi, Ryuki Nanamiya, Toshiyuki Umesato
  • Publication number: 20170183527
    Abstract: An aqueous ink containing a self-dispersible pigment for use in an ink jet recording method using a recording head that ejects an ink by an action of thermal energy. The aqueous ink contains a compound represented by General Formula (I): where in General Formula (I) R1's are independently of each other, a sulfonic acid group, a carboxylic acid group, a phosphoric acid group or a phosphonic acid group, R2 is a hydrogen atom or an alkyl group, and n is an integer of 1 to 5.
    Type: Application
    Filed: November 30, 2016
    Publication date: June 29, 2017
    Inventors: Yojiro Kojima, Yuko Negishi, Yoshihisa Yamashita
  • Publication number: 20170183526
    Abstract: An aqueous ink for ink jet containing a self-dispersible pigment, an aromatic sulfinic acid or a salt thereof and an aromatic sulfonic acid or a salt thereof.
    Type: Application
    Filed: December 2, 2016
    Publication date: June 29, 2017
    Inventors: Yoshihisa Yamashita, Yuko Negishi, Ryuki Nanamiya, Toshiyuki Umesato
  • Publication number: 20170183525
    Abstract: An aqueous ink for ink jet containing a self-dispersible pigment, a compound represented by General Formula (I): where in General Formula (I) each R1 independently represents a hydrogen atom or an alkyl group.
    Type: Application
    Filed: November 29, 2016
    Publication date: June 29, 2017
    Inventors: Fumiaki Fujioka, Yoshihisa Yamashita, Yuko Negishi
  • Publication number: 20160355019
    Abstract: An ink jet recording method comprising ejecting an ink from a recording head to record an image on a recording medium using an ink jet recording apparatus. The ink jet recording apparatus includes a main tank having an air communication part, a sub tank, and a recording head. The ratio of the maximum ink storage amount of the main tank to the maximum ink storage amount of the sub tank is 3.0 or more to 50.0 or less. The temperature of the ink in the sub tank is higher than the temperature of the ink in the main tank. The ink contains a coloring material and a particular surfactant.
    Type: Application
    Filed: June 1, 2016
    Publication date: December 8, 2016
    Inventors: Yuko Negishi, Soichi Nagai, Tomohiro Yamashita