Patents by Inventor Mikito Nakajima

Mikito Nakajima 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: 20240042774
    Abstract: Provided is an ink jet recording method including: discharging first ultraviolet curable ink of a radical polymerization reaction type which contains a radical photopolymerization initiator and a radical polymerization compound and in which transmittance at a wavelength of 395 nm is equal to or less than 1%, onto a recording medium; and curing the first ultraviolet curable ink which is landed on the recording medium by irradiating the ink with ultraviolet light, in which a light source which initially emits the ultraviolet light in the curing of the ink is an ultraviolet light emitting diode in which peak intensity of the irradiated ultraviolet light is equal to or more than 800 mW/cm2.
    Type: Application
    Filed: October 12, 2023
    Publication date: February 8, 2024
    Inventors: Mikito NAKAJIMA, Keitaro Nakano, Mitsuaki Yoshizawa
  • Patent number: 11813843
    Abstract: Provided is an ink jet recording method including: discharging first ultraviolet curable ink of a radical polymerization reaction type which contains a radical photopolymerization initiator and a radical polymerization compound and in which transmittance at a wavelength of 395 nm is equal to or less than 1%, onto a recording medium; and curing the first ultraviolet curable ink which is landed on the recording medium by irradiating the ink with ultraviolet light, in which a light source which initially emits the ultraviolet light in the curing of the ink is an ultraviolet light emitting diode in which peak intensity of the irradiated ultraviolet light is equal to or more than 800 mW/cm2.
    Type: Grant
    Filed: December 14, 2020
    Date of Patent: November 14, 2023
    Assignee: Seiko Epson Corporation
    Inventors: Mikito Nakajima, Keitaro Nakano, Mitsuaki Yoshizawa
  • Publication number: 20210094321
    Abstract: Provided is an ink jet recording method including: discharging first ultraviolet curable ink of a radical polymerization reaction type which contains a radical photopolymerization initiator and a radical polymerization compound and in which transmittance at a wavelength of 395 nm is equal to or less than 1%, onto a recording medium; and curing the first ultraviolet curable ink which is landed on the recording medium by irradiating the ink with ultraviolet light, in which a light source which initially emits the ultraviolet light in the curing of the ink is an ultraviolet light emitting diode in which peak intensity of the irradiated ultraviolet light is equal to or more than 800 mW/cm2.
    Type: Application
    Filed: December 14, 2020
    Publication date: April 1, 2021
    Inventors: Mikito NAKAJIMA, Keitaro Nakano, Mitsuaki Yoshizawa
  • Patent number: 10894430
    Abstract: Provided is an ink jet recording method including: discharging first ultraviolet curable ink of a radical polymerization reaction type which contains a radical photopolymerization initiator and a radical polymerization compound and in which transmittance at a wavelength of 395 nm is equal to or less than 1%, onto a recording medium; and curing the first ultraviolet curable ink which is landed on the recording medium by irradiating the ink with ultraviolet light, in which a light source which initially emits the ultraviolet light in the curing of the ink is an ultraviolet light emitting diode in which peak intensity of the irradiated ultraviolet light is equal to or more than 800 mW/cm2.
    Type: Grant
    Filed: January 6, 2020
    Date of Patent: January 19, 2021
    Assignee: Seiko Epson Corporation
    Inventors: Mikito Nakajima, Keitaro Nakano, Mitsuaki Yoshizawa
  • Publication number: 20200139728
    Abstract: Provided is an ink jet recording method including: discharging first ultraviolet curable ink of a radical polymerization reaction type which contains a radical photopolymerization initiator and a radical polymerization compound and in which transmittance at a wavelength of 395 nm is equal to or less than 1%, onto a recording medium; and curing the first ultraviolet curable ink which is landed on the recording medium by irradiating the ink with ultraviolet light, in which a light source which initially emits the ultraviolet light in the curing of the ink is an ultraviolet light emitting diode in which peak intensity of the irradiated ultraviolet light is equal to or more than 800 mW/cm2.
    Type: Application
    Filed: January 6, 2020
    Publication date: May 7, 2020
    Inventors: Mikito NAKAJIMA, Keitaro Nakano, Mitsuaki Yoshizawa
  • Patent number: 10569571
    Abstract: Provided is an ink jet recording method including: discharging first ultraviolet curable ink of a radical polymerization reaction type which contains a radical photopolymerization initiator and a radical polymerization compound and in which transmittance at a wavelength of 395 nm is equal to or less than 1%, onto a recording medium; and curing the first ultraviolet curable ink which is landed on the recording medium by irradiating the ink with ultraviolet light, in which a light source which initially emits the ultraviolet light in the curing of the ink is an ultraviolet light emitting diode in which peak intensity of the irradiated ultraviolet light is equal to or more than 800 mW/cm2.
    Type: Grant
    Filed: May 29, 2018
    Date of Patent: February 25, 2020
    Assignee: Seiko Epson Corporation
    Inventors: Mikito Nakajima, Keitaro Nakano, Mitsuaki Yoshizawa
  • Publication number: 20180319177
    Abstract: Provided is an ink jet recording method including: discharging first ultraviolet curable ink of a radical polymerization reaction type which contains a radical photopolymerization initiator and a radical polymerization compound and in which transmittance at a wavelength of 395 nm is equal to or less than 1%, onto a recording medium; and curing the first ultraviolet curable ink which is landed on the recording medium by irradiating the ink with ultraviolet light, in which a light source which initially emits the ultraviolet light in the curing of the ink is an ultraviolet light emitting diode in which peak intensity of the irradiated ultraviolet light is equal to or more than 800 mW/cm2.
    Type: Application
    Filed: May 29, 2018
    Publication date: November 8, 2018
    Applicant: Seiko Epson Corporation
    Inventors: Mikito Nakajima, Keitaro Nakano, Mitsuaki Yoshizawa
  • Patent number: 9981486
    Abstract: Provided is an ink jet recording method including: discharging first ultraviolet curable ink of a radical polymerization reaction type which contains a radical photopolymerization initiator and a radical polymerization compound and in which transmittance at a wavelength of 395 nm is equal to or less than 1%, onto a recording medium; and curing the first ultraviolet curable ink which is landed on the recording medium by irradiating the ink with ultraviolet light, in which a light source which initially emits the ultraviolet light in the curing of the ink is an ultraviolet light emitting diode in which peak intensity of the irradiated ultraviolet light is equal to or more than 800 mW/cm2.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: May 29, 2018
    Assignee: Seiko Epson Corporation
    Inventors: Mikito Nakajima, Keitaro Nakano, Mitsuaki Yoshizawa
  • Patent number: 9925801
    Abstract: Provided is an ink jet recording method including: discharging first ultraviolet curable ink of a radical polymerization reaction type which contains a radical photopolymerization initiator and a radical polymerization compound and in which transmittance at a wavelength of 395 nm is equal to or less than 1 %, onto a recording medium; and curing the first ultraviolet curable ink which is landed on the recording medium by irradiating the ink with ultraviolet light, in which a light source which initially emits the ultraviolet light in the curing of the ink is an ultraviolet light emitting diode in which peak intensity of the irradiated ultraviolet light is equal to or more than 800 mW/cm2.
    Type: Grant
    Filed: March 27, 2013
    Date of Patent: March 27, 2018
    Assignee: Seiko Epson Corporation
    Inventors: Mikito Nakajima, Keitaro Nakano, Mitsuaki Yoshizawa
  • Publication number: 20170087876
    Abstract: Provided is an ink jet recording method including: discharging first ultraviolet curable ink of a radical polymerization reaction type which contains a radical photopolymerization initiator and a radical polymerization compound and in which transmittance at a wavelength of 395 nm is equal to or less than 1%, onto a recording medium; and curing the first ultraviolet curable ink which is landed on the recording medium by irradiating the ink with ultraviolet light, in which a light source which initially emits the ultraviolet light in the curing of the ink is an ultraviolet light emitting diode in which peak intensity of the irradiated ultraviolet light is equal to or more than 800 mW/cm2.
    Type: Application
    Filed: December 8, 2016
    Publication date: March 30, 2017
    Applicant: Seiko Epson Corporation
    Inventors: Mikito Nakajima, Keitaro Nakano, Mitsuaki Yoshizawa
  • Patent number: 9134173
    Abstract: A radiation failure inspecting method includes acquiring read data when a scanner reads a radiation surface of a radiation unit in a state where a reading surface of the scanner faces the radiation surface of the radiation unit and the radiation unit emits light; acquiring a value corresponding to a radiation energy of the light from the radiation unit by integrating the read data in a direction corresponding to a predetermined direction on the read data; and determining that a radiation failure occurs in the radiation unit when the value corresponding to the radiation energy of the light is equal to or less than a threshold value.
    Type: Grant
    Filed: February 21, 2012
    Date of Patent: September 15, 2015
    Assignee: Seiko Epson Corporation
    Inventor: Mikito Nakajima
  • Patent number: 9085189
    Abstract: An image forming apparatus which includes an ejecting unit which ejects liquid cured by being irradiated with light onto a medium for printing, an irradiation unit which irradiates the liquid which has landed onto the medium for printing with the light, and an image quality inspection unit which inspects an image quality of an image which is formed on the medium for printing, in which, when the image quality inspection unit detects abnormal formation of the image, an intensity of the light of the irradiation unit is controlled.
    Type: Grant
    Filed: July 14, 2014
    Date of Patent: July 21, 2015
    Assignee: Seiko Epson Corporation
    Inventor: Mikito Nakajima
  • Patent number: 9073359
    Abstract: An image forming apparatus includes: a first head that discharges first light-curable ink; a light radiating unit that is positioned at one side from the first head in a predetermined direction and cures the first light-curable ink by radiating light to the first light-curable ink; a second head that is positioned at the one side from the light radiating unit in the predetermined direction and discharges second light-curable ink; and a control unit that causes an image to be formed on a medium by controlling the first head and the second head to discharge the light-curable ink while moving the position of the medium relative to the first head, the light radiating unit, and the second head to the one side in the predetermined direction.
    Type: Grant
    Filed: February 7, 2012
    Date of Patent: July 7, 2015
    Assignee: Seiko Epson Corporation
    Inventor: Mikito Nakajima
  • Patent number: 9039160
    Abstract: An image recording apparatus includes: a nozzle that discharges electromagnetic wave curable ink that is cured when an electromagnetic wave is irradiated onto a recording medium; and an irradiator for irradiating the electromagnetic wave, wherein a filter that transmits the electromagnetic wave is provided on the irradiator, and the filter has a first transmittance that causes the electromagnetic wave curable ink on the recording medium to be curable with respect to an electromagnetic wave that is incident at a first angle and a second transmittance that maintains a state in which the nozzle can discharge the electromagnetic wave curable ink with respect to an electromagnetic wave that is incident at a second angle.
    Type: Grant
    Filed: August 10, 2012
    Date of Patent: May 26, 2015
    Assignee: Seiko Epson Corporation
    Inventor: Mikito Nakajima
  • Publication number: 20140320567
    Abstract: An image forming apparatus which includes an ejecting unit which ejects liquid cured by being irradiated with light onto a medium for printing, an irradiation unit which irradiates the liquid which has landed onto the medium for printing with the light, and an image quality inspection unit which inspects an image quality of an image which is formed on the medium for printing, in which, when the image quality inspection unit detects abnormal formation of the image, an intensity of the light of the irradiation unit is controlled.
    Type: Application
    Filed: July 14, 2014
    Publication date: October 30, 2014
    Inventor: Mikito NAKAJIMA
  • Patent number: 8807693
    Abstract: An image forming apparatus which includes an ejecting unit which ejects liquid cured by being irradiated with light onto a medium for printing, an irradiation unit which irradiates the liquid which has landed onto the medium for printing with the light, and an image quality inspection unit which inspects an image quality of an image which is formed on the medium for printing, in which, when the image quality inspection unit detects abnormal formation of the image, an intensity of the light of the irradiation unit is controlled.
    Type: Grant
    Filed: November 5, 2012
    Date of Patent: August 19, 2014
    Assignee: Seiko Epson Corporation
    Inventor: Mikito Nakajima
  • Publication number: 20130258018
    Abstract: Provided is an ink jet recording method including: discharging first ultraviolet curable ink of a radical polymerization reaction type which contains a radical photopolymerization initiator and a radical polymerization compound and in which transmittance at a wavelength of 395 nm is equal to or less than 1%, onto a recording medium; and curing the first ultraviolet curable ink which is landed on the recording medium by irradiating the ink with ultraviolet light, in which a light source which initially emits the ultraviolet light in the curing of the ink is an ultraviolet light emitting diode in which peak intensity of the irradiated ultraviolet light is equal to or more than 800 mW/cm2.
    Type: Application
    Filed: March 27, 2013
    Publication date: October 3, 2013
    Inventors: Mikito Nakajima, Keitaro Nakano, Mitsuaki Yoshizawa
  • Publication number: 20130044172
    Abstract: An image recording apparatus includes: a nozzle that discharges electromagnetic wave curable ink that is cured when an electromagnetic wave is irradiated onto a recording medium; and an irradiator for irradiating the electromagnetic wave, wherein a filter that transmits the electromagnetic wave is provided on the irradiator, and the filter has a first transmittance that causes the electromagnetic wave curable ink on the recording medium to be curable with respect to an electromagnetic wave that is incident at a first angle and a second transmittance that maintains a state in which the nozzle can discharge the electromagnetic wave curable ink with respect to an electromagnetic wave that is incident at a second angle.
    Type: Application
    Filed: August 10, 2012
    Publication date: February 21, 2013
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Mikito Nakajima
  • Publication number: 20120211664
    Abstract: A radiation failure inspecting method includes acquiring read data when a scanner reads a radiation surface of a radiation unit in a state where a reading surface of the scanner faces the radiation surface of the radiation unit and the radiation unit emits light; acquiring a value corresponding to a radiation energy of the light from the radiation unit by integrating the read data in a direction corresponding to a predetermined direction on the read data; and determining that a radiation failure occurs in the radiation unit when the value corresponding to the radiation energy of the light is equal to or less than a threshold value.
    Type: Application
    Filed: February 21, 2012
    Publication date: August 23, 2012
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Mikito NAKAJIMA
  • Publication number: 20120206528
    Abstract: An image forming apparatus includes: a first head that discharges first light-curable ink; a light radiating unit that is positioned at one side from the first head in a predetermined direction and cures the first light-curable ink by radiating light to the first light-curable ink; a second head that is positioned at the one side from the light radiating unit in the predetermined direction and discharges second light-curable ink; and a control unit that causes an image to be formed on a medium by controlling the first head and the second head to discharge the light-curable ink while moving the position of the medium relative to the first head, the light radiating unit, and the second head to the one side in the predetermined direction.
    Type: Application
    Filed: February 7, 2012
    Publication date: August 16, 2012
    Applicant: Seiko Epson Corporation
    Inventor: Mikito NAKAJIMA