Patents by Inventor Tsuneaki TAKAGISHI
Tsuneaki TAKAGISHI 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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Patent number: 11376848Abstract: 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: GrantFiled: June 18, 2019Date of Patent: July 5, 2022Assignee: Hitachi Industrial Equipment Systems Co., Ltd.Inventors: An Kyu, Takashi Kawano, Tsuneaki Takagishi, Manabu Kato
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Publication number: 20210323304Abstract: 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: ApplicationFiled: June 18, 2019Publication date: October 21, 2021Inventors: An KYU, Takashi KAWANO, Tsuneaki TAKAGISHI, Manabu KATO
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Patent number: 11027540Abstract: 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: GrantFiled: March 12, 2018Date of Patent: June 8, 2021Assignee: Hitachi Industrial Equipment Systems Co., Ltd.Inventors: Tsuneaki Takagishi, Manabu Kato, An Kyu
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Patent number: 10703108Abstract: An inkjet recording apparatus, which can enhance the reliability of the phase search result to detect the optimal timing when the ink particles are electrically charged by the electrification electrode and secure the stable printing quality, is provided.Type: GrantFiled: January 9, 2019Date of Patent: July 7, 2020Assignee: Hitachi Industrial Equipment Systems Co., Ltd.Inventors: Takahiro Arima, Tsuneaki Takagishi, Manabu Kato, Shoki Yamaguchi, Satoshi Hasegawa, Mamoru Okano
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Publication number: 20200094545Abstract: 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: ApplicationFiled: March 12, 2018Publication date: March 26, 2020Inventors: Tsuneaki TAKAGISHI, Manabu KATO, An KYU
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Publication number: 20190217627Abstract: An inkjet recording apparatus, which can enhance the reliability of the phase search result to detect the optimal timing when the ink particles are electrically charged by the electrification electrode and secure the stable printing quality, is provided.Type: ApplicationFiled: January 9, 2019Publication date: July 18, 2019Inventors: Takahiro ARIMA, Tsuneaki TAKAGISHI, Manabu KATO, Shoki YAMAGUCHI, Satoshi HASEGAWA, Mamoru OKANO
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Patent number: 9636912Abstract: Under a condition in which bowed printing occurs, a horizontal shift is suppressed to improve print quality. Following a program stored in a ROM 12, an MPU 10 generates video data for charging print particles according to print contents data stored in a RAM 11. Based on the print contents data, the MPU 10 detects a letter to be printed last, and when the letter to be printed last is printed to end a print operation, generates video data so that based on the video data, a non-print charge voltage driving non-print particles to an extent that they do not fly over a gutter 25 is applied to non-print particles. The number of the non-print particles subjected to the non-print charge voltage is determined by the MPU 10, based on the distance from a print head 2 to a print subject 30, a letter height preset value, etc. A character signal generating circuit 18 generates the non-print charge voltage, based on the video data, and applies the generated the non-print charge voltage to a charging electrode 22.Type: GrantFiled: December 19, 2013Date of Patent: May 2, 2017Assignee: Hitachi Industrial Equipment Systems Co., Ltd.Inventors: Tsuneaki Takagishi, Nobuhiro Harada, Manabu Kato, Takashi Kawano, Masato Ikegawa
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Publication number: 20160046124Abstract: Under a condition in which bowed printing occurs, a horizontal shift is suppressed to improve print quality. Following a program stored in a ROM 12, an MPU 10 generates video data for charging print particles according to print contents data stored in a RAM 11. Based on the print contents data, the MPU 10 detects a letter to be printed last, and when the letter to be printed last is printed to end a print operation, generates video data so that based on the video data, a non-print charge voltage driving non-print particles to an extent that they do not fly over a gutter 25 is applied to non-print particles. The number of the non-print particles subjected to the non-print charge voltage is determined by the MPU 10, based on the distance from a print head 2 to a print subject 30, a letter height preset value, etc. A character signal generating circuit 18 generates the non-print charge voltage, based on the video data, and applies the generated the non-print charge voltage to a charging electrode 22.Type: ApplicationFiled: December 19, 2013Publication date: February 18, 2016Inventors: Tsuneaki TAKAGISHI, Nobuhiro HARADA, Manabu KATO, Takashi KAWANO, Masato IKEGAWA
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Patent number: 9233532Abstract: Provided is an inkjet recording device for performing print control by increasing or decreasing the number of adjustment ink particles, which are used according to the speed of the object being printed even when the movement speed of the object being printed is increasing or decreasing and which are uncharged particles carrying a fixed electrical charge that takes electrostatic bonding into consideration. The present invention is an inkjet recording device provided with an ink container for holding ink that is to be printed on the object being printed, a nozzle that is connected to the ink container and discharges the ink, a charging electrode for charging specified ink that has been discharged from the nozzle, a deflecting electrode for deflecting the ink charged by said charging electrode, a gutter for collecting the ink that is not used for printing, and a control unit for controlling the printing.Type: GrantFiled: May 28, 2013Date of Patent: January 12, 2016Assignee: Hitachi Industrial Equipment Systems Co., Ltd.Inventors: An Qiu, Takashi Kawano, Tsuneaki Takagishi
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Patent number: 9199452Abstract: Provided is an inkjet recording device for performing print control by increasing or decreasing the number of adjustment ink particles, which are used according to the speed of the object being printed even when the movement speed of the object being printed is increasing or decreasing and which are uncharged particles carrying a fixed electrical charge that takes electrostatic bonding into consideration. The present invention is an inkjet recording device provided with an ink container for holding ink that is to be printed on the object being printed, a nozzle that is connected to the ink container and discharges the ink, a charging electrode for charging specified ink that has been discharged from the nozzle, a deflecting electrode for deflecting the ink charged by said charging electrode, a gutter for collecting the ink that is not used for printing, and a control unit for controlling the printing.Type: GrantFiled: May 28, 2013Date of Patent: December 1, 2015Assignee: Hitachi Industrial Equipment Systems Co., Ltd.Inventors: An Qiu, Takashi Kawano, Tsuneaki Takagishi
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Publication number: 20150165761Abstract: Provided is an inkjet recording device for performing print control by increasing or decreasing the number of adjustment ink particles, which are used according to the speed of the object being printed even when the movement speed of the object being printed is increasing or decreasing and which are uncharged particles carrying a fixed electrical charge that takes electrostatic bonding into consideration. The present invention is an inkjet recording device provided with an ink container for holding ink that is to be printed on the object being printed, a nozzle that is connected to the ink container and discharges the ink, a charging electrode for charging specified ink that has been discharged from the nozzle, a deflecting electrode for deflecting the ink charged by said charging electrode, a gutter for collecting the ink that is not used for printing, and a control unit for controlling the printing.Type: ApplicationFiled: May 28, 2013Publication date: June 18, 2015Inventors: An Qiu, Takashi Kawano, Tsuneaki Takagishi
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Patent number: 8974029Abstract: An ink jet recording apparatus and printing control method are provided in which when a moving speed of a printing object is changed, a difference in writing start position is reduced and printing quality is improved. The apparatus includes an ink container, a nozzle connected to the container for ejecting ink, a charging electrode to charge the ejected ink, a deflecting electrode to deflect the charged ink, a gutter to collect ink not used for printing, a writing start timing control circuit to generate a first line clock signal, a printing width control circuit to generate a second line clock signal, and a control part. The control part controls print start timing based on the first clock signal, and when the printing object reaches the printing start timing, the control part performs a width adjustment of a character string of printing content based on the second clock signal.Type: GrantFiled: February 13, 2013Date of Patent: March 10, 2015Assignee: Hitachi Industrial Equipment Systems, Ltd.Inventors: An Qiu, Tsuneaki Takagishi, Takashi Kawano, Nobuhiro Harada, Shinichi Kobayashi
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Patent number: 8919934Abstract: A voltage is applied between first and second deflecting electrodes from a deflecting voltage controller, whereby an electric field is formed between the first and second deflecting electrodes in a direction perpendicular to electrode surfaces. An electric line of force is generated from a direction perpendicular to the electrode surface of the first deflecting electrode and made perpendicularly incident on the electrode surface of the second deflecting electrode. Since the first and second deflecting electrodes are parallel to each other, a plurality of parallel electric lines of force are formed perpendicularly to the electrode surfaces of the first and second deflecting electrodes. Droplets after passing charged electrodes fly in a region where this deflecting electric field is formed, whereby charged droplets are deflected in a direction in which the charged droplets approach the second electrode having opposite charging polarity. The charged droplets form a printing pattern.Type: GrantFiled: February 19, 2013Date of Patent: December 30, 2014Assignee: Hitachi Industrial Equipment Services Co., Ltd.Inventors: Masato Ikegawa, Eiji Ishii, Nobuhiro Harada, Tsuneaki Takagishi
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Publication number: 20130314462Abstract: A voltage is applied between first and second deflecting electrodes from a deflecting voltage controller, whereby an electric field is formed between the first and second deflecting electrodes in a direction perpendicular to electrode surfaces. An electric line of force is generated from a direction perpendicular to the electrode surface of the first deflecting electrode and made perpendicularly incident on the electrode surface of the second deflecting electrode. Since the first and second deflecting electrodes are parallel to each other, a plurality of parallel electric lines of force are formed perpendicularly to the electrode surfaces of the first and second deflecting electrodes. Droplets after passing charged electrodes fly in a region where this deflecting electric field is formed, whereby charged droplets are deflected in a direction in which the charged droplets approach the second electrode having opposite charging polarity. The charged droplets form a printing pattern.Type: ApplicationFiled: February 19, 2013Publication date: November 28, 2013Applicant: HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD.Inventors: Masato IKEGAWA, Eiji ISHII, Nobuhiro HARADA, Tsuneaki TAKAGISHI
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Publication number: 20130257949Abstract: An ink-jet recording apparatus and printing control method are provided in which when a moving speed of a printing object is changed, a difference in writing start position is reduced and printing quality is improved. The apparatus includes an ink container, a nozzle connected to the container for ejecting ink, a charging electrode to charge the ejected ink, a deflecting electrode to deflect the charged ink, a gutter to collect ink not used for printing, a writing start timing control circuit to generate a first line clock signal, a printing width control circuit to generate a second line clock signal, and a control part. The control part controls print start timing based on the first clock signal, and when the printing object reaches the printing start timing, the control part performs a width adjustment of a character string of printing content based on the second clock signal.Type: ApplicationFiled: February 13, 2013Publication date: October 3, 2013Applicant: HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD.Inventors: An QIU, Tsuneaki TAKAGISHI, Takashi KAWANO, Nobuhiro HARADA, Shinichi KOBAYASHI