Patents by Inventor Kazuaki Sakurada

Kazuaki Sakurada 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: 20230182495
    Abstract: A control unit acquires an interval between weaving threads in a woven fabric, and changes an interval between ruled lines constituting a ruled line group in a test pattern on the basis of the acquired interval between weaving threads. When the interval between weaving threads in the woven fabric matches the interval between ruled lines constituting the ruled line group in the test pattern or when these intervals are in the relationship of integer multiple, ruled lines in the test pattern match the interval between weaving threads in the woven fabric. When they match, it is difficult to recognize the difference between the test pattern and the shadow of the weaving thread in the woven fabric. The control unit changes the interval between ruled lines constituting the ruled line group in the test pattern on the basis of the interval between weaving threads. This enables the difference recognition to be less difficult.
    Type: Application
    Filed: December 14, 2022
    Publication date: June 15, 2023
    Inventor: Kazuaki SAKURADA
  • Publication number: 20220088952
    Abstract: A liquid ejecting device includes: a head having a plurality of nozzles for ejecting droplets onto a printing medium; a movement unit configured to move the head relative to the printing medium in a relative movement direction; and a control unit configured to record a test pattern on the printing medium by controlling the head and the movement unit, and to perform recording by correcting control of the head and/or the movement unit based on a correction value obtained from the test pattern, wherein the test pattern includes a plurality of patches from which a plurality of candidates for the correction value for correcting a landing position at which the droplet lands on the printing medium in the relative movement direction are obtained.
    Type: Application
    Filed: September 16, 2021
    Publication date: March 24, 2022
    Inventors: Kazuaki SAKURADA, Junichi TAKENUKI, Teruyuki TAKATA
  • Patent number: 11198312
    Abstract: A method for determining a working gap includes a first recording step for ejecting ink from a recording head onto a first recording medium to record a test pattern, a first imaging step for capturing the test pattern recorded on the first recording medium in each of a state where a distance between the recording head and the first recording medium is a first distance, and a state where a distance between the recording head and the first recording medium is a second distance, a function calculating step, a second recording step for recording the test pattern on a second recording medium, a second imaging step for capturing the test pattern recorded on the second recording medium, and a working gap determining step for determining, based on the number of pixels of the captured test pattern and a function, a distance between the recording head and the second recording medium.
    Type: Grant
    Filed: January 29, 2020
    Date of Patent: December 14, 2021
    Assignee: Seiko Epson Corporation
    Inventors: Kazuaki Sakurada, Tetsuo Tatsuda, Yuichi Shikagawa, Mamoru Ukita
  • Patent number: 10737486
    Abstract: A printing method includes a printing process that performs printing on a recording medium, in which, in the printing process, a first correction is performed in which discharging portions, where a first correction target head other than a first reference head among heads of a first group and a second correction target head other than the first reference head among the heads of a second group discharge inks, are corrected based on a first reference printing pattern, and a second correction is performed in which a discharging portion, where a third correction target head among heads of a third group other than a second reference head discharges the inks, is corrected based on the first reference printing pattern and a second reference printing pattern.
    Type: Grant
    Filed: December 5, 2017
    Date of Patent: August 11, 2020
    Assignee: Seiko Epson Corporation
    Inventor: Kazuaki Sakurada
  • Publication number: 20200247159
    Abstract: A method for determining a working gap includes a first recording step for ejecting ink from a recording head onto a first recording medium to record a test pattern, a first imaging step for capturing the test pattern recorded on the first recording medium in each of a state where a distance between the recording head and the first recording medium is a first distance, and a state where a distance between the recording head and the first recording medium is a second distance, a function calculating step, a second recording step for recording the test pattern on a second recording medium, a second imaging step for capturing the test pattern recorded on the second recording medium, and a working gap determining step for determining, based on the number of pixels of the captured test pattern and a function, a distance between the recording head and the second recording medium.
    Type: Application
    Filed: January 29, 2020
    Publication date: August 6, 2020
    Inventors: Kazuaki SAKURADA, Tetsuo TATSUDA, Yuichi SHIKAGAWA, Mamoru UKITA
  • Patent number: 10442216
    Abstract: A printing apparatus includes a transporting section that transports a work, a printing mechanism section that has a nozzle plate that performs printing by discharging ink on the work, and a moving section that reciprocally and relatively moves the printing mechanism section in a direction intersecting the transporting direction of the work. In the printing apparatus, when the printing mechanism section moves reciprocally, printing in a forward path includes a first printing area, a second printing areas, and printing in a backward path includes a first printing area, and second printing areas. In addition, the transportation amount of the work is adjusted based on the second printing areas.
    Type: Grant
    Filed: October 14, 2015
    Date of Patent: October 15, 2019
    Assignee: Seiko Epson Corporation
    Inventors: Itaru Kozuma, Kazuaki Sakurada, Seigo Momose
  • Patent number: 10286667
    Abstract: A recording device includes, when a transporting direction of a medium is set to a first axis and a direction intersecting with the transporting direction is set to a second axis, a head which includes a nozzle column along the first axis; a pair of heads in which the heads discharging droplets of the same color are paired; and a head unit which includes a plurality of pairs of heads along the second axis. The pair of heads include a predetermined overlapping portion in which the nozzle columns are overlapped with each other in a side view from the second axis, the overlapping portion includes a plurality of nozzle regions divided along the second axis, and a position of the nozzle region which is used in discharge of the droplets is different from a position of the nozzle region of another pair of heads.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: May 14, 2019
    Assignee: Seiko Epson Corporation
    Inventors: Kazuaki Sakurada, Toru Fujita, Takamitsu Kondo, Seigo Momose, Akira Yamada, Masahisa Otake
  • Patent number: 10173419
    Abstract: The printing apparatus is provided with a transport mechanism section that transports work, a printing mechanism section that has nozzles, which carry out printing by discharging an ink, as liquid droplets, onto the work transported by the transport mechanism section, and an adjustment section that adjusts a volume per single droplet of the ink discharged from the nozzles on the basis of a separation distance between the nozzles and the work, which is positioned directly below the nozzles.
    Type: Grant
    Filed: February 29, 2016
    Date of Patent: January 8, 2019
    Assignee: Seiko Epson Corporation
    Inventors: Kazuaki Sakurada, Takamitsu Kondo, Seigo Momose, Akira Yamada
  • Publication number: 20180229519
    Abstract: A printing apparatus includes a transporting section that transports a work, a printing mechanism section that has a nozzle plate that performs printing by discharging ink on the work, and a moving section that reciprocally and relatively moves the printing mechanism section in a direction intersecting the transporting direction of the work. In the printing apparatus, when the printing mechanism section moves reciprocally, printing in a forward path includes a first printing area, a second printing areas, and printing in a backward path includes a first printing area, and second printing areas. In addition, the transportation amount of the work is adjusted based on the second printing areas.
    Type: Application
    Filed: October 14, 2015
    Publication date: August 16, 2018
    Inventors: Itaru KOZUMA, Kazuaki SAKURADA, Seigo MOMOSE
  • Publication number: 20180154629
    Abstract: A printing method includes a printing process that performs printing on a recording medium, in which, in the printing process, a first correction is performed in which discharging portions, where a first correction target head other than a first reference head among heads of a first group and a second correction target head other than the first reference head among the heads of a second group discharge inks, are corrected based on a first reference printing pattern, and a second correction is performed in which a discharging portion, where a third correction target head among heads of a third group other than a second reference head discharges the inks, is corrected based on the first reference printing pattern and a second reference printing pattern.
    Type: Application
    Filed: December 5, 2017
    Publication date: June 7, 2018
    Inventor: Kazuaki Sakurada
  • Patent number: 9962928
    Abstract: A printing apparatus includes a transport section, a printing section, and a control section. The printing section is configured to move in an intersecting direction intersecting a transport direction of a recording medium. The printing section includes a plurality of nozzles that are configured to perform printing by discharging an ink onto the recording medium. The control section is configured to control the transport section and the printing section. The printing section includes a first nozzle row and a second nozzle row, the first and second nozzle rows form an overlapping section in which the first and second nozzle rows overlap each other as viewed in the intersecting direction. The control section is configured to control a plurality of adjacent nozzles among the first nozzle row and the second nozzle row, which are in the vicinity of the overlapping section, not to discharge the ink.
    Type: Grant
    Filed: March 23, 2017
    Date of Patent: May 8, 2018
    Assignee: Seiko Epson Corporation
    Inventors: Kazuaki Sakurada, Takamitsu Kondo, Seigo Momose, Akira Yamada
  • Publication number: 20180043685
    Abstract: The printing apparatus is provided with a transport mechanism section that transports work, a printing mechanism section that has nozzles, which carry out printing by discharging an ink, as liquid droplets, onto the work transported by the transport mechanism section, and an adjustment section that adjusts a volume per single droplet of the ink discharged from the nozzles on the basis of a separation distance between the nozzles and the work, which is positioned directly below the nozzles.
    Type: Application
    Filed: February 29, 2016
    Publication date: February 15, 2018
    Inventors: Kazuaki SAKURADA, Takamitsu KONDO, Seigo MOMOSE, Akira YAMADA
  • Publication number: 20170274650
    Abstract: A recording device includes, when a transporting direction of a medium is set to a first axis and a direction intersecting with the transporting direction is set to a second axis, a head which includes a nozzle column along the first axis; a pair of heads in which the heads discharging droplets of the same color are paired; and a head unit which includes a plurality of pairs of heads along the second axis. The pair of heads include a predetermined overlapping portion in which the nozzle columns are overlapped with each other in a side view from the second axis, the overlapping portion includes a plurality of nozzle regions divided along the second axis, and a position of the nozzle region which is used in discharge of the droplets is different from a position of the nozzle region of another pair of heads.
    Type: Application
    Filed: March 17, 2017
    Publication date: September 28, 2017
    Inventors: Kazuaki SAKURADA, Toru FUJITA, Takamitsu KONDO, Seigo MOMOSE, Akira YAMADA, Masahisa OTAKE
  • Patent number: 9770919
    Abstract: There is provided a recording apparatus in which it is possible to use a suitable reaction liquid to be applied on the recording medium, out of multiple types of reaction liquids. A recording apparatus includes a transport mechanism that transports a recording medium, a reaction liquid applying mechanism that selectively applies, on the recording medium, either a first reaction liquid that reacts with ink or a second reaction liquid that reacts with the ink and is different from the first reaction liquid, and an ink discharge mechanism that is positioned downstream from the reaction liquid applying mechanism in the transport direction of the recording medium and discharges the ink onto the recording medium. It is preferable that the reaction liquid applying mechanism include a first reaction liquid discharge unit that discharges the first reaction liquid and a second reaction liquid discharge unit that discharges the second reaction liquid.
    Type: Grant
    Filed: November 26, 2014
    Date of Patent: September 26, 2017
    Assignee: Seiko Epson Corporation
    Inventors: Yuichi Washio, Kentaro Miyazaki, Kazuaki Sakurada, Satoru Katagami, Kazuya Tajima
  • Publication number: 20170210158
    Abstract: A printing apparatus executes a continuous printing by a printing execution unit while transporting a belt-shaped printing base material by a transport path in a longer direction. The printing execution unit includes a reaction solution discharge head, an ink discharge head, and a head for overprinting. The reaction solution discharge head forms a reaction solution layer containing a flocculant on a printing face of the printing base material. The ink discharge head forms a printing image by discharging an ink containing a color material on the reaction solution layer. The head for overprinting forms an overprint layer so as to be positioned on the reaction solution layer.
    Type: Application
    Filed: July 21, 2015
    Publication date: July 27, 2017
    Inventors: Kazuaki SAKURADA, Kentaro MIYAZAKI, Satoru KATAGAMI, Yuichi WASHIO, Kazuya TAJIMA
  • Publication number: 20170190172
    Abstract: A printing apparatus includes a transport section, a printing section, and a control section. The printing section is configured to move in an intersecting direction intersecting a transport direction of a recording medium. The printing section includes a plurality of nozzles that are configured to perform printing by discharging an ink onto the recording medium. The control section is configured to control the transport section and the printing section. The printing section includes a first nozzle row and a second nozzle row, the first and second nozzle rows form an overlapping section in which the first and second nozzle rows overlap each other as viewed in the intersecting direction. The control section is configured to control a plurality of adjacent nozzles among the first nozzle row and the second nozzle row, which are in the vicinity of the overlapping section, not to discharge the ink.
    Type: Application
    Filed: March 23, 2017
    Publication date: July 6, 2017
    Inventors: Kazuaki SAKURADA, Takamitsu KONDO, Seigo MOMOSE, Akira YAMADA
  • Patent number: 9636933
    Abstract: A printing apparatus is provided with a transport mechanism section that transports work, a printing mechanism section that has multiple nozzle groups, which perform printing by discharging an ink onto the work as liquid droplets, and control section that controls the actions of the transport mechanism section and the printing mechanism section. In addition, the printing mechanism section includes a first nozzle row that forms a first printing region, a second nozzle row that forms a second printing region, and an overlapping section in which the first nozzle row and the second nozzle row overlap. Further, the control section prohibits overlapping of the first printing region with the second printing region on the work when forming the third printing region.
    Type: Grant
    Filed: February 29, 2016
    Date of Patent: May 2, 2017
    Assignee: Seiko Epson Corporation
    Inventors: Kazuaki Sakurada, Takamitsu Kondo, Seigo Momose, Akira Yamada
  • Patent number: 9573388
    Abstract: A printing method uses a reaction liquid containing an aggregating agent capable of causing the aggregation of a color material. This printing method includes: applying a first reaction liquid to a recording medium; applying a background color ink that contains a color material for a background color to a region of the recording medium which is coated with the first reaction liquid; drying the recording medium coated with the background color ink by heating the recording medium; applying a second reaction liquid to a region of the dried recording medium which is coated with the background color ink; and applying an image forming ink that contains a color material having a color different from that of the background color ink to a region of the recording medium which is coated with the second reaction liquid.
    Type: Grant
    Filed: November 6, 2015
    Date of Patent: February 21, 2017
    Assignee: Seiko Epson Corporation
    Inventors: Satoru Katagami, Kazuaki Sakurada, Kazuya Tajima, Kazuyoshi Tanase, Yuichi Washio, Kentaro Miyazaki
  • Publication number: 20160288542
    Abstract: A printing apparatus is provided with a transport mechanism section that transports work, a printing mechanism section that has multiple nozzle groups, which perform printing by discharging an ink onto the work as liquid droplets, and control section that controls the actions of the transport mechanism section and the printing mechanism section. In addition, the printing mechanism section includes a first nozzle row that forms a first printing region, a second nozzle row that forms a second printing region, and an overlapping section in which the first nozzle row and the second nozzle row overlap. Further, the control section prohibits overlapping of the first printing region with the second printing region on the work when forming the third printing region.
    Type: Application
    Filed: February 29, 2016
    Publication date: October 6, 2016
    Inventors: Kazuaki SAKURADA, Takamitsu KONDO, Seigo MOMOSE, Akira YAMADA
  • Publication number: 20160221366
    Abstract: There is provided a recording apparatus in which it is possible to use a suitable reaction liquid to be applied on the recording medium, out of multiple types of reaction liquids. A recording apparatus includes a transport mechanism that transports a recording medium, a reaction liquid applying mechanism that selectively applies, on the recording medium, either a first reaction liquid that reacts with ink or a second reaction liquid that reacts with the ink and is different from the first reaction liquid, and an ink discharge mechanism that is positioned downstream from the reaction liquid applying mechanism in the transport direction of the recording medium and discharges the ink onto the recording medium. It is preferable that the reaction liquid applying mechanism include a first reaction liquid discharge unit that discharges the first reaction liquid and a second reaction liquid discharge unit that discharges the second reaction liquid.
    Type: Application
    Filed: November 26, 2014
    Publication date: August 4, 2016
    Inventors: Yuichi WASHIO, Kentaro MIYAZAKI, Kazuaki SAKURADA, Satoru KATAGAMI, Kazuya TAJIMA