Patents by Inventor An KYU

An KYU 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).

  • Patent number: 11376848
    Abstract: To realize high-quality printing with less printing distortion by reducing an influence of a Coulomb force that acts between ink particles which are ejected in an inkjet recording device. The inkjet recording device is configured to charge ink particles ejected from a nozzle, deflect the charged ink particles, and print a character in a shape of an object to be printed. In the inkjet recording device, dots of each column of the character to be printed are divided into a plurality of blocks in a column direction. In addition, charging voltage data in which the order of the ink particles corresponding to the dots is switched in the divided block unit is stored, and a predetermined charging voltage is applied to the charging electrode on the basis of the charging voltage data.
    Type: Grant
    Filed: June 18, 2019
    Date of Patent: July 5, 2022
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: An Kyu, Takashi Kawano, Tsuneaki Takagishi, Manabu Kato
  • Publication number: 20210323304
    Abstract: To realize high-quality printing with less printing distortion by reducing an influence of a Coulomb force that acts between ink particles which are ejected in an inkjet recording device. The inkjet recording device is configured to charge ink particles ejected from a nozzle, deflect the charged ink particles, and print a character in a shape of an object to be printed. In the inkjet recording device, dots of each column of the character to be printed are divided into a plurality of blocks in a column direction. In addition, charging voltage data in which the order of the ink particles corresponding to the dots is switched in the divided block unit is stored, and a predetermined charging voltage is applied to the charging electrode on the basis of the charging voltage data.
    Type: Application
    Filed: June 18, 2019
    Publication date: October 21, 2021
    Inventors: An KYU, Takashi KAWANO, Tsuneaki TAKAGISHI, Manabu KATO
  • Patent number: 11027540
    Abstract: An object of the present invention is to provide an inkjet recording device capable of adjusting a clearance between prints formed by two nozzles (114, 115), and capable of printing a print content at a high speed. In order to achieve the object, there is provided an inkjet recording device which has two sub-print heads including nozzles (114, 115), charging electrodes (116, 117), deflection electrodes (118, 119), and gutters (120, 121), in which the two nozzles are disposed in a deflection direction of ink particles, and which performs printing on a printed object (124) while moving the printed object (124) relative to the ink particles in a direction substantially perpendicular to the deflection direction of the ink particles, the inkjet recording device having a function for reducing a clearance between print results (125, 126), printed by the two nozzles (114, 115), by controlling a voltage applied to the charging electrodes (116, 117) and a voltage applied to the deflection electrode (118, 119).
    Type: Grant
    Filed: March 12, 2018
    Date of Patent: June 8, 2021
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Tsuneaki Takagishi, Manabu Kato, An Kyu
  • Publication number: 20200189270
    Abstract: Provided is an inkjet recording device control method including: a printing object detection step of detecting a printing object; a charge control signal transmission step of transmitting signals for controlling charges of a plurality of nozzles at a timing when the printing object is detected in the printing object detection step and signals are received from all of a plurality of processing units; and a printing step of controlling the plurality of nozzles and performing printing on the basis of the signals for controlling the charges that have been transmitted in the charge signal transmission step.
    Type: Application
    Filed: August 21, 2017
    Publication date: June 18, 2020
    Inventors: Keisuke OKAWA, Takashi KAWANO, An KYU
  • Publication number: 20200094545
    Abstract: An object of the present invention is to provide an inkjet recording device capable of adjusting a clearance between prints formed by two nozzles (114, 115), and capable of printing a print content at a high speed. In order to achieve the object, there is provided an inkjet recording device which has two sub-print heads including nozzles (114, 115), charging electrodes (116, 117), deflection electrodes (118, 119), and gutters (120, 121), in which the two nozzles are disposed in a deflection direction of ink particles, and which performs printing on a printed object (124) while moving the printed object (124) relative to the ink particles in a direction substantially perpendicular to the deflection direction of the ink particles, the inkjet recording device having a function for reducing a clearance between print results (125, 126), printed by the two nozzles (114, 115), by controlling a voltage applied to the charging electrodes (116, 117) and a voltage applied to the deflection electrode (118, 119).
    Type: Application
    Filed: March 12, 2018
    Publication date: March 26, 2020
    Inventors: Tsuneaki TAKAGISHI, Manabu KATO, An KYU
  • Patent number: 10183486
    Abstract: When printing on the same printing object with multiple print nozzles in the past, consideration was not given to cases in which the time relationships of the set times and times-to-be-printed become mismatched between the respective print items of the print nozzles. To solve this problem, an inkjet printer that prints on a conveyed printing object and has multiple print nozzles, multiple auxiliary control units for controlling the printing performed by the multiple print nozzles, and a common main control unit connected to the multiple auxiliary control units via communication unit is provided. The main control unit extracts the time relationship of the set times and the time relationship of the times-to-be-printed between the items to be printed by the respective print nozzles of the multiple print nozzles and revises the print data so as to preserve the time relationship of the set times.
    Type: Grant
    Filed: April 8, 2015
    Date of Patent: January 22, 2019
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: An Kyu, Takashi Kawano
  • Publication number: 20170239945
    Abstract: When printing on the same printing object with multiple print nozzles in the past, consideration was not given to cases in which the time relationships of the set times and times-to-be-printed become mismatched between the respective print items of the print nozzles. To solve said problem, the present invention is an inkjet printer for printing on a conveyed printing object and having multiple print nozzles, multiple auxiliary control units for controlling the printing performed by the multiple print nozzles, and a common main control unit connected to the multiple auxiliary control units via communication means. The main control unit is configured to be equipped with: an extracting function for extracting the time relationship of the set times and the time relationship of the times-to-be-printed between the items to be printed by the respective print nozzles of the multiple print nozzles; and a revising function for revising the print data so as to preserve the time relationship of the set times.
    Type: Application
    Filed: April 8, 2015
    Publication date: August 24, 2017
    Inventors: An KYU, Takashi KAWANO