Patents by Inventor Ippei Okuda

Ippei Okuda 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: 20200276828
    Abstract: An ink jet printing method includes an application step of ejecting a coloring ink composition functioning to color a printing medium through an ejection opening of a first ink jet head to apply the coloring ink composition onto a printing medium, and an application step of ejecting a non-coloring composition different from the coloring ink composition through an ejection opening of a second ink jet head to apply the non-coloring composition onto the printing medium. The coloring ink composition is circulated through a circulation path connected to the first ink jet head after being fed into the first ink jet head and before being ejected through the ejection opening of the first ink jet head. The non-coloring composition is not circulated through a circulation path after being fed into the second ink jet head and before being ejected through the ejection opening of the second ink jet head.
    Type: Application
    Filed: February 27, 2020
    Publication date: September 3, 2020
    Inventors: Tadashi WATANABE, Ippei OKUDA
  • Patent number: 10737510
    Abstract: A recording method is provided including: discharging and adhering a reaction liquid to an ink non-absorbable or ink low-absorbable recording medium in a form of a droplet, by using an ink jet method, the reaction liquid containing a reagent for aggregating or thickening of a colored ink composition; and adhering a colored ink composition to the recording medium to which the reaction liquid has adhered. The recording medium is heated before adhering the colored ink composition to the recording medium, a period from when adhering of the reaction liquid is ended until adhering of the colored ink composition is started is within 30 seconds, and a surface temperature of the recording medium from the adhering of the reaction liquid to the adhering of the colored ink composition is equal to or lower than 38° C.
    Type: Grant
    Filed: March 19, 2019
    Date of Patent: August 11, 2020
    Assignee: Seiko Epson Corporation
    Inventors: Ippei Okuda, Mitsuaki Kosaka
  • Patent number: 10723903
    Abstract: There is provided an ink set used by being attached to a recording medium together with a reaction liquid which reacts with and aggregates components of an ink composition, the ink set including a first ink composition which includes a coloring material, a fixing resin, and a resin-dissolving solvent, and a second ink composition which includes a coloring material, a fixing resin, and a resin-dissolving solvent and which is the same color ink as the first ink composition.
    Type: Grant
    Filed: September 25, 2018
    Date of Patent: July 28, 2020
    Assignee: Seiko Epson Corporation
    Inventors: Ippei Okuda, Yoshiko Azami
  • Publication number: 20200131391
    Abstract: An ink set includes a reaction liquid containing coagulant; a first ink containing a color material; and a second ink containing a color material. The ink set is used for recording on a non-absorptive recording medium or a low-absorptive recording medium and for imparting the reaction liquid, the first ink, and the second ink to the recording medium in a superimposed manner in this order.
    Type: Application
    Filed: December 30, 2019
    Publication date: April 30, 2020
    Inventors: Ippei OKUDA, Tetsuya AOYAMA
  • Patent number: 10618291
    Abstract: A method for maintaining an ink jet head according to the invention includes at least one of a maintenance step of attaching a maintenance liquid to a nozzle surface of an ink jet head, which ejects a reaction solution including an aggregating agent for aggregating or thickening components of an ink composition, to clean the nozzle surface, and a maintenance step of covering and moisturizing the nozzle surface with a head moisturizing cap supplied with the maintenance liquid, in which the maintenance liquid includes a water-soluble organic solvent having a boiling point of 280° C. or less and water.
    Type: Grant
    Filed: September 7, 2018
    Date of Patent: April 14, 2020
    Assignee: Seiko Epson Corporation
    Inventor: Ippei Okuda
  • Patent number: 10618309
    Abstract: An ink jet recording method according to the invention includes attaching a reaction liquid including a reactant for aggregating or thickening a coloring ink component including a coloring material to a recording medium; attaching the coloring ink by an ink jet method to an area where the reaction liquid is attached, in a state where a residual rate of a volatile component of the reaction liquid attached on the recording medium is 25% by mass or more after attaching of the reaction liquid; and attaching a clear ink including a resin to the area where the coloring ink is attached.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: April 14, 2020
    Assignee: Seiko Epson Corporation
    Inventors: Takeshi Yano, Ippei Okuda, Mitsuaki Kosaka
  • Publication number: 20200101758
    Abstract: An ink jet method includes causing a treatment liquid to adhere to a recording medium; a white ink to adhere to the recording medium; and a non-white ink to adhere to the recording medium. The treatment liquid, white ink, and non-white ink are applied by main scans of a recording head and sub-scans of the recording medium that intersect the main scans. The recording head includes a first nozzle group arranged in the sub-scanning direction and discharging the treatment liquid, a second nozzle group arranged in the sub-scanning direction and discharging the white ink, and a third nozzle group arranged in the sub-scanning direction and discharging the non-white ink. The second and third nozzle groups have non-overlapping portions in the main scanning direction, and one or both of the second and third nozzle groups have a portion overlapping the first nozzle group in the main scanning direction.
    Type: Application
    Filed: September 26, 2019
    Publication date: April 2, 2020
    Inventors: Ippei OKUDA, Kimitaka KAMIJO
  • Publication number: 20200101781
    Abstract: An ink jet recording method includes a white ink adhesion step of causing a white ink containing a white pigment to adhere to a recording medium by an ink jet method; a non-white ink adhesion step of causing a non-white ink containing a non-white coloring material to adhere to the recording medium by the ink jet method; and a drying step of drying the white ink and the non-white ink adhering to the recording medium in the white ink adhesion step and the non-white ink adhesion step by a blowing type or radiation type drying unit, in which the white ink adhesion step and the non-white ink adhesion step are performed in a state where the recording medium is supported on a support member including a suction hole sucking the recording medium, and are performed by plural times of main scanning in which a recording head discharging the white ink and a recording head discharging the non-white ink discharge each ink while moving in a main scanning direction and plural times of sub-scanning in which the recording mediu
    Type: Application
    Filed: September 27, 2019
    Publication date: April 2, 2020
    Inventors: Ippei OKUDA, Kimitaka KAMIJO
  • Patent number: 10603930
    Abstract: A recording method includes heating a recording medium and attaching an ink composition including an organic solvent and water to the heated recording medium by performing a main scanning a plurality of times. In each main scanning the ink composition is ejected from a recording head while a position of the recording head relative to the recording medium in a main scanning direction is changed. In the ink composition, an absolute value of a difference between a surface tension of the ink composition and a surface tension of the ink composition when the ink composition is evaporated up to an evaporation amount of 0% to 40% by mass is 1 mN/m or less.
    Type: Grant
    Filed: October 30, 2018
    Date of Patent: March 31, 2020
    Assignee: Seiko Epson Corporation
    Inventors: Mami Tojino, Ippei Okuda, Akira Mizutani
  • Patent number: 10603927
    Abstract: An ink jet recording method is provided for recording white and non-white ink compositions onto a moving recording medium. The recording medium includes a first region where both the white and non-white ink compositions are adhered, and a second region where only the white ink composition is adhered. Further, one or both of Conditions (i) and (ii) is satisfied. Condition (i): The amount of the white ink composition adhered in the first region is less than the amount of the white ink composition adhered in the second region. Condition (ii): The number of times the white ink composition is scanned across the first region is less than the number of times the white ink composition is scanned across in the second region.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: March 31, 2020
    Assignee: Seiko Epson Corporation
    Inventors: Ippei Okuda, Tsuyoshi Sano
  • Publication number: 20200094583
    Abstract: An ink jet recording method includes an ink attachment step of discharging an aqueous white color ink containing a white color material from an ink jet head onto a recording medium having a white color recording surface with glossiness of 30 or less at an L* value of 75 or more, and attaching the aqueous white color ink onto the recording medium, and a drying step of drying the recording medium onto which the aqueous white color ink is attached, in which a ratio of glossiness of an attachment portion of the aqueous white color ink to the white color recording surface after the drying is two times or more.
    Type: Application
    Filed: September 20, 2019
    Publication date: March 26, 2020
    Inventors: Yuta ASAKAWA, Akira MIZUTANI, Akiko MATSUZAKI, Ippei OKUDA
  • Patent number: 10597548
    Abstract: A recording method according to the invention includes adhering a reaction liquid which reacts with and aggregates components of an ink composition to a recording medium; adhering a first ink composition to the recording medium; and adhering a second ink composition having reactivity with the reaction liquid lower than that of the first ink composition to the recording medium. Adhesion of the second ink composition to the recording medium is performed prior to adhesion of the first ink composition to the recording medium.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: March 24, 2020
    Assignee: Seiko Epson Corporation
    Inventors: Akira Mizutani, Ippei Okuda
  • Publication number: 20200087527
    Abstract: A printing method includes a white ink application step of ejecting a white ink from a printing head to apply the white ink onto a printing medium, a non-white ink application step of ejecting a non-white ink containing a non-white coloring material from a printing head to apply the non-white ink onto the printing medium, and a treatment liquid application step of applying a treatment liquid containing a flocculant onto the printing medium. The white ink contains a white pigment and inorganic fine particles having a smaller volume average particle size than the white pigment.
    Type: Application
    Filed: September 18, 2019
    Publication date: March 19, 2020
    Inventor: Ippei OKUDA
  • Publication number: 20200070546
    Abstract: An ink jet printing method includes a printing step of performing a plurality of times of scanning performed by ejecting a treatment liquid and an ink composition from an ink jet head having treatment liquid nozzles and ink nozzles that is being transferred in a scanning direction, thus applying the treatment liquid and the ink composition onto a printing medium. The ink jet head has an arrangement of treatment liquid ejection nozzles that includes a coincident portion, and an arrangement of ink ejection nozzles that includes a coincident portion, and the coincident portions are coincident in position in the sub-scanning direction with each other.
    Type: Application
    Filed: August 28, 2019
    Publication date: March 5, 2020
    Inventors: Akira MIZUTANI, Ippei OKUDA
  • Patent number: 10563078
    Abstract: An ink set includes a reaction liquid containing coagulant; a first ink containing a color material; and a second ink containing a color material. The ink set is used for recording on a non-absorptive recording medium or a low-absorptive recording medium and for imparting the reaction liquid, the first ink, and the second ink to the recording medium in a superimposed manner in this order.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: February 18, 2020
    Assignee: Seiko Epson Corporation
    Inventors: Ippei Okuda, Tetsuya Aoyama
  • Publication number: 20200039232
    Abstract: An ink jet printing method includes scanning a printing medium in a scanning direction a plurality of times with an ink jet head from which inks and a treatment liquid acting to flocculate constituents of the inks are ejected. The ink jet head includes first ink nozzles filled with a first ink and arranged in a sub-scanning direction, second ink nozzles filled with a second ink having a different composition from the first ink and arranged in the sub-scanning direction, and treatment liquid nozzles filled with the treatment liquid and arranged in the sub-scanning direction. At least some of the treatment liquid nozzles are coincident in the sub-scanning direction with the first and second ink nozzles. The first ink nozzles are closest to the treatment liquid nozzles in the scanning direction, and the first ink exhibits a viscosity increase by a factor of 6.0 or less.
    Type: Application
    Filed: July 30, 2019
    Publication date: February 6, 2020
    Inventors: Yuta ASAKAWA, Akira MIZUTANI, Akiko MATSUZAKI, Ippei OKUDA
  • Publication number: 20190363037
    Abstract: According to some embodiments, a semiconductor device includes a semiconductor substrate, a metal portion, a first insulating film, and a second insulating film. The semiconductor substrate has a through-hole extending from a first surface of the semiconductor substrate to a second surface thereof opposite to the first surface. The metal portion is formed in the through-hole. The first insulating film is provided on the second surface of the semiconductor substrate and on a side surface of the through-hole. The second insulating film has a dielectric constant of not more than 6.5 and is provided on a metal portion-side surface of the first insulating film on the side surface of the through-hole of the semiconductor substrate.
    Type: Application
    Filed: February 26, 2019
    Publication date: November 28, 2019
    Applicant: TOSHIBA MEMORY CORPORATION
    Inventors: Ippei Kume, Taketo Matsuda, Shinya Okuda, Masahiko Murano
  • Publication number: 20190329579
    Abstract: According to the invention, there is provided a recording method which includes adhering an ink composition to a recording medium, and adhering a reaction liquid to the recording medium, the reaction liquid containing water and a reagent for aggregating or thickening components of the ink composition, and having a pH of 7 to 10. In the adhering of the reaction liquid, an epoxy-based adhesive is used for at least a portion of a reaction liquid passage for supplying the reaction liquid to an ink jet head, and a member in contact with the reaction liquid in the ink jet head, and the reaction liquid is discharged from the ink jet head so as to adhere to the recording medium.
    Type: Application
    Filed: July 9, 2019
    Publication date: October 31, 2019
    Inventors: Ippei OKUDA, Mitsuaki KOSAKA
  • Patent number: 10457073
    Abstract: An ink jet recording method according to one aspect of the invention includes a reaction liquid adhesion step of ejecting from an ink jet head, a reaction liquid in the form of liquid droplets containing an aggregating agent which aggregates a color ink composition so as to adhere the reaction liquid to a recording region of a recording medium which is a non-absorptive recording medium or a low-absorptive recording medium; and a color ink adhesion step of ejecting the color ink composition in the form of liquid droplets from the ink jet head so as to adhere the color ink composition to the recording region of the recording medium to which the reaction liquid is adhered. In the reaction liquid adhesion step, while ejecting the liquid droplets, the ink jet head is scanned a plurality of times so as to be moved relatively with respect to the recording medium.
    Type: Grant
    Filed: December 26, 2017
    Date of Patent: October 29, 2019
    Assignee: Seiko Epson Corporation
    Inventors: Ippei Okuda, Mitsuaki Kosaka
  • Publication number: 20190291473
    Abstract: An ink jet recording method includes: heating a recording medium; and ejecting a white color water-based ink composition from an ink jet head to a recording medium heated in the heating of the recording medium and causing the white color water-based ink composition to adhere to the recording medium, the causing of the white color water-based ink composition to adhere is performed by performing scanning, in which the ink composition is ejected while relative positions between the ink jet head and the recording medium are changed in a scanning direction, a plurality of times, and a maximum time of the scanning performed once is equal to or greater than 0.8 seconds, and the white color water-based ink composition contains first particles that are a white color pigment and second particles that are particles of a different kind from the first particles and that are inorganic fine particles.
    Type: Application
    Filed: March 25, 2019
    Publication date: September 26, 2019
    Inventors: Ippei OKUDA, Akiko MATSUZAKI