Patents by Inventor Eishin Yoshikawa

Eishin Yoshikawa 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: 20240109338
    Abstract: A liquid ejecting device such that, when an emission unit passes above an ejected liquid in a first non-constant velocity period concerning a velocity of movement of a liquid ejecting head and the emission unit, emission is performed at not less than an effective output when a distance between the liquid ejecting head and the emission unit is a first distance. In a second non-constant velocity period that is a non-constant velocity period and in which the relative velocity relative to the medium is faster than that in the first non-constant velocity period, in a case in which the emission unit passes above the ejected liquid, the liquid ejecting device performs control such that emission is performed at not less than an effective output when the distance is a second distance longer than the first distance, and at less than an effective output when the distance is the first distance.
    Type: Application
    Filed: September 28, 2023
    Publication date: April 4, 2024
    Inventor: Eishin YOSHIKAWA
  • Patent number: 11801688
    Abstract: A recording control device. A first portion control section forms a first portion as a portion that is continuous from a first region and is not continuous to a second region in a recording region in an output image that is formed on a medium in an overlapping region in a recording region, in such a manner that a use rate of a first nozzle row of an overlapping portion of a nozzle row is set to a first nozzle use rate. A second portion control section forms a second portion as a portion that is continuous with the first region and the second region in the output image in the overlapping region, in such a manner that the use rate of the first nozzle row of the overlapping portion is set to the second nozzle use rate.
    Type: Grant
    Filed: September 22, 2021
    Date of Patent: October 31, 2023
    Assignee: Seiko Epson Corporation
    Inventor: Eishin Yoshikawa
  • Publication number: 20230202176
    Abstract: A printing apparatus includes a printing head provided with a first nozzle row and a second nozzle row arranged shifted from the first nozzle row in a nozzle alignment direction, and a control unit configured to control ejection of ink from nozzles included in the printing head onto a medium based on print data. The control unit is configured to set an image to be complemented as a partial region of an image to be printed on the medium in accordance with a boundary portion between the first nozzle row and the second nozzle row, assign print data for printing the image to be completed to at least one of a first adjacent nozzle that is a nozzle in the first nozzle row and adjacent to the boundary portion and a second adjacent nozzle that is a nozzle in the second nozzle row and adjacent to the boundary portion, and complement the image to be complemented by ink ejection from at least one of the first adjacent nozzle and the second adjacent nozzle.
    Type: Application
    Filed: December 22, 2022
    Publication date: June 29, 2023
    Inventor: Eishin YOSHIKAWA
  • Publication number: 20230202203
    Abstract: A recording device includes a recording unit configured to record a plurality of types of recording materials on a medium, and a control unit configured to control recording by the recording unit. When performing recording on the medium in accordance with recording data for recording a plurality of types of recording materials in a same region on the medium, the control unit identifies a first recording material with a relatively high recording density in the same region, and a second recording material with a lower recording density in the same region than that of the first recording material, based on recording data, and the control unit performs recording such that a second region in which recording is performed with the second recording material corresponding to the same region is smaller than a first region in which recording is performed with the first recording material corresponding to the same region.
    Type: Application
    Filed: December 23, 2022
    Publication date: June 29, 2023
    Inventor: Eishin YOSHIKAWA
  • Patent number: 11639073
    Abstract: A recording method is for performing recording by ejecting, onto a recording medium, ink and a reaction solution including a flocculating agent that flocculates a substance contained in the ink, and the recording method includes ejecting the reaction solution as a droplet onto the recording medium, and ejecting the ink as a droplet onto the recording medium. A relationship of Op1?Op2 is satisfied when an ejection amount of the reaction solution during ejecting the reaction solution in a first recording mode is indicated with Op1, and an ejection amount of the reaction solution during ejecting the reaction solution in a second recording mode is indicated with Op2, the second recording mode having a recording speed lower than the first recording mode.
    Type: Grant
    Filed: November 19, 2020
    Date of Patent: May 2, 2023
    Assignee: Seiko Epson Corporation
    Inventor: Eishin Yoshikawa
  • Publication number: 20230056603
    Abstract: A printing apparatus includes a printing unit configured to perform printing on a recording target, a projection unit configured to project a printing sample image onto the recording target, a detection unit configured to detect a user operation within a projection area into which the projection unit is configured to perform projection, and a control unit configured to control the printing unit based on a printing condition, wherein the control unit changes the printing condition, based on the user operation that is detected by the detection unit.
    Type: Application
    Filed: August 17, 2022
    Publication date: February 23, 2023
    Inventor: Eishin YOSHIKAWA
  • Publication number: 20220410594
    Abstract: A suction apparatus includes a support portion, a plurality of suction holes formed in the support portion, a suction mechanism configured to perform suction from an outer side of the support portion toward an inner side through the plurality of suction holes, a lighting unit provided on the inner side of the support portion for each region of the support portion, a light transmitting portion configured to transmit light emitted by the lighting unit to the outer side of the support portion, and a control unit configured to control the lighting unit, in which the control unit makes a lighting state of the lighting unit corresponding to a suction region in which suction at the support portion is enabled different from a lighting state of the lighting unit corresponding to a non-suction region in which the suction at the support portion is disabled.
    Type: Application
    Filed: June 27, 2022
    Publication date: December 29, 2022
    Inventor: Eishin YOSHIKAWA
  • Publication number: 20220410597
    Abstract: A printing apparatus includes an ejection head including a first nozzle row configured to eject, toward a recording medium, a first liquid containing a photopolymerization initiator and a second nozzle row configured to eject, toward the recording medium, a second liquid containing the polymerizable compound and a color material and not containing the photopolymerization initiator, a driving unit configured to change relative positions of the ejection head and the recording medium, and an irradiation unit configured to irradiate, with the light, the recording medium onto which the first liquid and the second liquid are deposited. The first liquid and the second liquid are ejected from the ejection head so that the second liquid overlaps the first liquid on a surface of the recording medium. A distance between the irradiation unit and the first nozzle row is longer than a distance between the irradiation unit and the second nozzle row.
    Type: Application
    Filed: June 21, 2022
    Publication date: December 29, 2022
    Inventor: Eishin YOSHIKAWA
  • Patent number: 11507790
    Abstract: Provided is a printing method for performing printing using a serial printer. In printing of a print image including a line image, the printing method includes a raster line forming step of forming each of raster lines configuring the image, by a plurality of pass operations. In the formation of each of the raster lines, when printing of a region corresponding to edge pixels of the line image by a first pass operation, which is one of the plurality of pass operations, is first printing, and printing of the region corresponding to the edge pixels by a second pass operation that is different from the first pass operation, of the plurality of pass operations, is second printing, a brightness of the printing by the second printing is higher than a brightness of the printing by the first printing.
    Type: Grant
    Filed: June 17, 2021
    Date of Patent: November 22, 2022
    Assignee: Seiko Epson Corporation
    Inventors: Takamitsu Kondo, Jun Hoshii, Kimitaka Kamijo, Tomoyuki Kondo, Eishin Yoshikawa, Takashi Tamai
  • Patent number: 11427018
    Abstract: A printing apparatus and a printing method, including a first irradiation unit provided at one side in a main scanning direction with respect to a reference region in which the nozzle row is provided, and a second irradiation unit provided at another side, wherein at least one of the first irradiation unit and the second irradiation unit irradiates and changes an irradiation position different from a directly-below irradiation position.
    Type: Grant
    Filed: July 12, 2021
    Date of Patent: August 30, 2022
    Assignee: Seiko Epson Corporation
    Inventor: Eishin Yoshikawa
  • Publication number: 20220088939
    Abstract: A recording control device. A first portion control section forms a first portion as a portion that is continuous from a first region and is not continuous to a second region in a recording region in an output image that is formed on a medium in an overlapping region in a recording region, in such a manner that a use rate of a first nozzle row of an overlapping portion of a nozzle row is set to a first nozzle use rate. A second portion control section forms a second portion as a portion that is continuous with the first region and the second region in the output image in the overlapping region, in such a manner that the use rate of the first nozzle row of the overlapping portion is set to the second nozzle use rate.
    Type: Application
    Filed: September 22, 2021
    Publication date: March 24, 2022
    Inventor: Eishin YOSHIKAWA
  • Publication number: 20220016910
    Abstract: A printing apparatus and a printing method, including a first irradiation unit provided at one side in a main scanning direction with respect to a reference region in which the nozzle row is provided, and a second irradiation unit provided at another side, wherein at least one of the first irradiation unit and the second irradiation unit irradiates and changes an irradiation position different from a directly-below irradiation position.
    Type: Application
    Filed: July 12, 2021
    Publication date: January 20, 2022
    Inventor: Eishin YOSHIKAWA
  • Publication number: 20210397913
    Abstract: Provided is a printing method for performing printing using a serial printer. In printing of a print image including a line image, the printing method includes a raster line forming step of forming each of raster lines configuring the image, by a plurality of pass operations. In the formation of each of the raster lines, when printing of a region corresponding to edge pixels of the line image by a first pass operation, which is one of the plurality of pass operations, is first printing, and printing of the region corresponding to the edge pixels by a second pass operation that is different from the first pass operation, of the plurality of pass operations, is second printing, a brightness of the printing by the second printing is higher than a brightness of the printing by the first printing.
    Type: Application
    Filed: June 17, 2021
    Publication date: December 23, 2021
    Inventors: Takamitsu KONDO, Jun HOSHII, Kimitaka KAMIJO, Tomoyuki KONDO, Eishin YOSHIKAWA, Takashi TAMAI
  • Patent number: 11130351
    Abstract: A control information generating method includes generating thermal transfer control information based on an amount of ink to be used for printing of a printing medium, in a case where thermal transfer control information for heating a printing medium printed on a first medium based on image data and thermally transferring the printing medium to a second medium is generated.
    Type: Grant
    Filed: June 12, 2018
    Date of Patent: September 28, 2021
    Assignee: Seiko Epson Corporation
    Inventor: Eishin Yoshikawa
  • Patent number: 11104152
    Abstract: A liquid discharging apparatus is provided with a head including a plurality of nozzle groups, a main scanning portion that scans the head in a main scanning direction, a sub-scanning portion that relatively moves the head and the medium in a sub-scanning direction, which intersects the main scanning direction, and a control portion, in which the control portion acquires a possible printing Duty of a predetermined nozzle group on the basis of a number of occurrences of non-discharging nozzles in the predetermined nozzle group, compares a set printing Duty that the predetermined nozzle group is to print among an overall printing Duty, and the possible printing Duty. and supplements a printing Duty with another nozzle group in a case in which the possible printing Duty is smaller than the set printing Duty.
    Type: Grant
    Filed: April 27, 2020
    Date of Patent: August 31, 2021
    Assignee: Seiko Epson Corporation
    Inventor: Eishin Yoshikawa
  • Publication number: 20210155025
    Abstract: A recording method is for performing recording by ejecting, onto a recording medium, ink and a reaction solution including a flocculating agent that flocculates a substance contained in the ink, and the recording method includes ejecting the reaction solution as a droplet onto the recording medium, and ejecting the ink as a droplet onto the recording medium. A relationship of Op1?Op2 is satisfied when an ejection amount of the reaction solution during ejecting the reaction solution in a first recording mode is indicated with Op1, and an ejection amount of the reaction solution during ejecting the reaction solution in a second recording mode is indicated with Op2, the second recording mode having a recording speed lower than the first recording mode.
    Type: Application
    Filed: November 19, 2020
    Publication date: May 27, 2021
    Inventor: Eishin YOSHIKAWA
  • Patent number: 11014388
    Abstract: A test pattern formation method includes preparing a first pattern including a plurality of dot rows that are separated, and a second pattern including a plurality of regions having a width greater than a width of the plurality of dot rows and provided spaced apart by a plurality of gaps greater than or equal to the width of the plurality of dot rows. At least a portion of the first pattern and at least a portion of the second pattern are in positions overlapping each other. Given a largest overlap between one of the plurality of dot rows and one of the plurality of gaps as a reference, the other dot rows of the plurality of dot rows and the plurality of regions having a wide width overlap and are deviated from each other incrementally by a respective distance corresponding to a landing deviation amount.
    Type: Grant
    Filed: September 4, 2019
    Date of Patent: May 25, 2021
    Assignee: Seiko Epson Corporation
    Inventor: Eishin Yoshikawa
  • Patent number: 10870271
    Abstract: A liquid ejecting apparatus includes a liquid ejecting head having N nozzle line groups (N is an integer equal to or larger than 3) arranged in a first direction, a main scanning section configured to move the liquid ejecting head in a second direction which intersects with the first direction for scanning, a selection section configured to select a set of use nozzle lines to be used for formation of dots on the medium from among the N nozzle line groups, and an ejection controller configured to form the dots by causing the nozzles included in the set of use nozzle lines selected by the selection section to eject the liquid. The selection section selects M of the N nozzle line groups (2?M<N) which are consecutively adjacent to each other in the first direction as the set of use nozzle lines.
    Type: Grant
    Filed: December 16, 2019
    Date of Patent: December 22, 2020
    Assignee: Seiko Epson Corporation
    Inventors: Masashi Kamibayashi, Eishin Yoshikawa, Yuji Hatanaka
  • Publication number: 20200276829
    Abstract: A liquid discharging apparatus isprovided with a head including a plurality of nozzle groups, a main scanning portion that scans the head in a main scanning direction, a sub-scanning portion that relatively moves the head and the medium in a sub-scanning direction, which intersects the main scanning direction, and a control portion, in which the control portion acquires a possible printing Duty of a predetermined nozzle group on the basis of a number of occurrences of non-discharging nozzles in the predetermined nozzle group, compares a set printing Duty that the predetermined nozzle group is to print among an overall printing Duty, and the possible printing Duty. and supplements a printing Duty with another nozzle group in a case in which the possible printing Duty is smaller than the set printing Duty.
    Type: Application
    Filed: April 27, 2020
    Publication date: September 3, 2020
    Inventor: Eishin YOSHIKAWA
  • Publication number: 20200189268
    Abstract: A liquid ejecting apparatus includes a liquid ejecting head having N nozzle line groups (N is an integer equal to or larger than 3) arranged in a first direction, a main scanning section configured to move the liquid ejecting head in a second direction which intersects with the first direction for scanning, a selection section configured to select a set of use nozzle lines to be used for formation of dots on the medium from among the N nozzle line groups, and an ejection controller configured to form the dots by causing the nozzles included in the set of use nozzle lines selected by the selection section to eject the liquid. The selection section selects M of the N nozzle line groups (2?M<N) which are consecutively adjacent to each other in the first direction as the set of use nozzle lines.
    Type: Application
    Filed: December 16, 2019
    Publication date: June 18, 2020
    Inventors: Masashi KAMIBAYASHI, Eishin YOSHIKAWA, Yuji HATANAKA