Patents by Inventor Takuya Moriai

Takuya Moriai 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: 8807714
    Abstract: An ink-jet recording apparatus has a print head 13 incorporating: a nozzle 20, which vibrates ink at a constant cycle, jets out the ink, and atomizes the ink; an electrification electrode 26, which electrify an ink particle 19; and deflection electrodes 27b, which deflect the electrified ink particle in a main scanning direction. The print head 13 carries out printing by causing the ink particle to fly to a printing workpiece W conveyed by a conveyer 15. Flying time of the ink particle in a printing distance La between the printing workpiece W and the print head 13 is calculated, timing of an electrification signal supplied to the electrification electrode 26 is controlled in accordance with the flying time, and a printing position to the printing workpiece W is set. Thus, printing can be carried out at a predetermined position to the printing workpiece W, and printing quality can be enhanced.
    Type: Grant
    Filed: June 24, 2009
    Date of Patent: August 19, 2014
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Takuya Moriai, Nobuhiro Harada, Masahiko Sakuraba
  • Patent number: 8764169
    Abstract: In an inkjet recording device, nozzles are arranged orthogonally to a deflection direction of deflection electrodes. Ink jetted from each nozzle is charged by a pair of charging electrodes. Charged droplets are deflected by an electric field formed thereby. Voltages applied to each electrode and timings thereof can be independently adjusted.
    Type: Grant
    Filed: August 11, 2009
    Date of Patent: July 1, 2014
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Nobuhiro Harada, Akira Miyao, Koji Horikawa, Hisashi Umetsu, Takuya Moriai
  • Patent number: 8764145
    Abstract: An inkjet recording apparatus includes an ink particle generation unit that makes a pressurized ink injected from a nozzle into particles, a charging unit that electrically charges the ink particle of those subjected to particulation, which corresponds to a dot to be printed, a polarizing unit that polarizes the electrically charged ink particle in a polarizing electric field, a collection unit that allows a gutter to collect the ink particle corresponding to the dot that is not printed, and a character forming unit that forms a character as a dot matrix on a printing object. A phase detection charging signal is applied to the ink particle that is not used for printing when forming the dot matrix character so as to detect an optimum charging timing in a process of forming the dot matrix character.
    Type: Grant
    Filed: July 31, 2012
    Date of Patent: July 1, 2014
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Takuya Moriai, Nobuhiro Harada, Takashi Kawano
  • Publication number: 20130044149
    Abstract: An inkjet recording apparatus includes an ink particle generation unit that makes a pressurized ink injected from a nozzle into particles, a charging unit that electrically charges the ink particle of those subjected to particulation, which corresponds to a dot to be printed, a polarizing unit that polarizes the electrically charged ink particle in a polarizing electric field, a collection unit that allows a gutter to collect the ink particle corresponding to the dot that is not printed, and a character forming unit that forms a character as a dot matrix on a printing object. A phase detection charging signal is applied to the ink particle that is not used for printing when forming the dot matrix character so as to detect an optimum charging timing in a process of forming the dot matrix character.
    Type: Application
    Filed: July 31, 2012
    Publication date: February 21, 2013
    Inventors: Takuya MORIAI, Nobuhiro Harada, Takashi Kawano
  • Publication number: 20120194586
    Abstract: In an inkjet recording device, nozzles are arranged orthogonally to a deflection direction of deflection electrodes. Ink jetted from each nozzle is charged by a pair of charging electrodes. Charged droplets are deflected by an electric field formed thereby. Voltages applied to each electrode and timings thereof can be independently adjusted.
    Type: Application
    Filed: August 11, 2009
    Publication date: August 2, 2012
    Inventors: Nobuhiro Harada, Akira Miyao, Koji Horikawa, Hisashi Umetsu, Takuya Moriai
  • Publication number: 20120086745
    Abstract: An ink-jet recording apparatus has a print head 13 incorporating: a nozzle 20, which vibrates ink at a constant cycle, jets out the ink, and atomizes the ink; an electrification electrode 26, which electrify an ink particle 19; and deflection electrodes 27b, which deflect the electrified ink particle in a main scanning direction. The print head 13 carries out printing by causing the ink particle to fly to a printing workpiece W conveyed by a conveyer 15. Flying time of the ink particle in a printing distance La between the printing workpiece W and the print head 13 is calculated, timing of an electrification signal supplied to the electrification electrode 26 is controlled in accordance with the flying time, and a printing position to the printing workpiece W is set. Thus, printing can be carried out at a predetermined position to the printing workpiece W, and printing quality can be enhanced.
    Type: Application
    Filed: June 24, 2009
    Publication date: April 12, 2012
    Inventors: Takuya Moriai, Nobuhiro Harada, Masahiko Sakuraba
  • Publication number: 20100073411
    Abstract: A conventional ink jet recording device has a phenomenon of such that a transverse pitch between longitudinal dot column of a first line and that of a second line of character lines to be printed becomes narrower than that between other longitudinal dot columns when printing out on a printing object traveling in high speed. Consequently, an ink jet recording device of the invention makes an interval between ink droplets on the longitudinal dot column of the first line and those on the longitudinal dot column of the second line longer than an interval between the ink droplets on the longitudinal dot column of a subsequent line following the second line.
    Type: Application
    Filed: February 23, 2007
    Publication date: March 25, 2010
    Applicant: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Takuya Moriai, Nobuhiro Harada, Koji Horikawa, Shinichi Kobayashi, Masahiko Sakurada