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).
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Publication number: 20240042774Abstract: 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: ApplicationFiled: October 12, 2023Publication date: February 8, 2024Inventors: Mikito NAKAJIMA, Keitaro Nakano, Mitsuaki Yoshizawa
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Patent number: 11813843Abstract: 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: GrantFiled: December 14, 2020Date of Patent: November 14, 2023Assignee: Seiko Epson CorporationInventors: Mikito Nakajima, Keitaro Nakano, Mitsuaki Yoshizawa
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Publication number: 20210094321Abstract: 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: ApplicationFiled: December 14, 2020Publication date: April 1, 2021Inventors: Mikito NAKAJIMA, Keitaro Nakano, Mitsuaki Yoshizawa
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Patent number: 10894430Abstract: 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: GrantFiled: January 6, 2020Date of Patent: January 19, 2021Assignee: Seiko Epson CorporationInventors: Mikito Nakajima, Keitaro Nakano, Mitsuaki Yoshizawa
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Publication number: 20200139728Abstract: 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: ApplicationFiled: January 6, 2020Publication date: May 7, 2020Inventors: Mikito NAKAJIMA, Keitaro Nakano, Mitsuaki Yoshizawa
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Patent number: 10569571Abstract: 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: GrantFiled: May 29, 2018Date of Patent: February 25, 2020Assignee: Seiko Epson CorporationInventors: Mikito Nakajima, Keitaro Nakano, Mitsuaki Yoshizawa
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Publication number: 20180319177Abstract: 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: ApplicationFiled: May 29, 2018Publication date: November 8, 2018Applicant: Seiko Epson CorporationInventors: Mikito Nakajima, Keitaro Nakano, Mitsuaki Yoshizawa
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Patent number: 9981486Abstract: 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: GrantFiled: December 8, 2016Date of Patent: May 29, 2018Assignee: Seiko Epson CorporationInventors: Mikito Nakajima, Keitaro Nakano, Mitsuaki Yoshizawa
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Patent number: 9925801Abstract: 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: GrantFiled: March 27, 2013Date of Patent: March 27, 2018Assignee: Seiko Epson CorporationInventors: Mikito Nakajima, Keitaro Nakano, Mitsuaki Yoshizawa
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Publication number: 20170087876Abstract: 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: ApplicationFiled: December 8, 2016Publication date: March 30, 2017Applicant: Seiko Epson CorporationInventors: Mikito Nakajima, Keitaro Nakano, Mitsuaki Yoshizawa
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Patent number: 9134173Abstract: 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: GrantFiled: February 21, 2012Date of Patent: September 15, 2015Assignee: Seiko Epson CorporationInventor: Mikito Nakajima
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Patent number: 9085189Abstract: 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: GrantFiled: July 14, 2014Date of Patent: July 21, 2015Assignee: Seiko Epson CorporationInventor: Mikito Nakajima
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Patent number: 9073359Abstract: 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: GrantFiled: February 7, 2012Date of Patent: July 7, 2015Assignee: Seiko Epson CorporationInventor: Mikito Nakajima
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Patent number: 9039160Abstract: 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: GrantFiled: August 10, 2012Date of Patent: May 26, 2015Assignee: Seiko Epson CorporationInventor: Mikito Nakajima
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Publication number: 20140320567Abstract: 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: ApplicationFiled: July 14, 2014Publication date: October 30, 2014Inventor: Mikito NAKAJIMA
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Patent number: 8807693Abstract: 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: GrantFiled: November 5, 2012Date of Patent: August 19, 2014Assignee: Seiko Epson CorporationInventor: Mikito Nakajima
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Publication number: 20130258018Abstract: 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: ApplicationFiled: March 27, 2013Publication date: October 3, 2013Inventors: Mikito Nakajima, Keitaro Nakano, Mitsuaki Yoshizawa
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Publication number: 20130044172Abstract: 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: ApplicationFiled: August 10, 2012Publication date: February 21, 2013Applicant: SEIKO EPSON CORPORATIONInventor: Mikito Nakajima
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Publication number: 20120211664Abstract: 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: ApplicationFiled: February 21, 2012Publication date: August 23, 2012Applicant: SEIKO EPSON CORPORATIONInventor: Mikito NAKAJIMA
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Publication number: 20120206528Abstract: 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: ApplicationFiled: February 7, 2012Publication date: August 16, 2012Applicant: Seiko Epson CorporationInventor: Mikito NAKAJIMA