Patents by Inventor Mamoru Okano
Mamoru Okano 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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Publication number: 20230398777Abstract: An inkjet recording device includes a main body unit, a print head unit, and a head mounting unit. The main body unit includes an ink container. The print head unit includes a nozzle connected to the ink container. The head mounting unit is configured to allow the print head unit to be mounted on the head mounting unit. The head mounting unit includes a head detection unit that detects whether or not the print head unit is mounted, using a magnetic force.Type: ApplicationFiled: August 28, 2023Publication date: December 14, 2023Inventors: Takahiro ARIMA, Sho Mizoguchi, Akira Miyao, Fumiomi Ueda, Mamoru Okano
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Publication number: 20230364913Abstract: An inkjet recording device having a print head cleaning function of preventing a cleaning liquid from spilling around the inkjet recording device and storing the cleaning liquid used for cleaning in a highly airtight container. The inkjet recording device includes a main body including an ink container accommodating an ink used to perform printing on a print target, and a cleaning liquid container that accommodates a cleaning liquid; a print head including a nozzle that is connected to the ink container to discharge the ink which is pressurized and supplied, a charging electrode that charges ink particles, a deflection electrode that deflects the ink particles charged by the charging electrode, and a gutter that recovers the ink particles which are not used for the printing; and a head cleaning unit including a cleaning nozzle that discharges the cleaning liquid, and an insertion port into which the print head is insertable.Type: ApplicationFiled: July 28, 2023Publication date: November 16, 2023Inventors: Shoki YAMAGUCHI, Takahiro ARIMA, Sho MIZOGUCHI, Mamoru OKANO, Akira MIYAO
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Patent number: 11623444Abstract: An ink jet recording apparatus includes an ink container in which ink to be used to perform printing on a print target is stored, a nozzle which is connected to the ink container and from which pressurized and supplied ink is jetted, charging electrodes that charge ink particles jetted from the nozzle with electricity, deflecting electrodes that polarize the ink particles charged with electricity by the charging electrodes, a gutter that recovers ink not used for printing, a solvent container in which a solvent is stored, and a liquid nozzle which is connected to the solvent container and from which a pressurized and supplied solvent is jetted. The liquid nozzle includes a liquid flow passage portion that extends from the nozzle in a direction of the gutter, and a liquid jet hole that is formed at an angle allowing the pressurized and supplied solvent to hit the nozzle through the liquid flow passage portion.Type: GrantFiled: January 28, 2021Date of Patent: April 11, 2023Assignee: Hitachi Industrial Equipment Systems Co., Ltd.Inventors: Takahiro Arima, Sho Mizoguchi, Mamoru Okano
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Publication number: 20220250377Abstract: Provided is an inkjet recording device capable of facilitating cleaning of a print head, and easily recovering a solvent (cleaning liquid) that is used for cleaning. An inkjet recording device includes a print head that receives a supply of ink to perform printing; and a main body that includes an ink container to contain the ink and a solvent container to contain a solvent, and that supplies the ink in the ink container to the print head. Further, the inkjet recording device includes a cleaning tank, a cleaning nozzle, and a recovery container. Then, the print head is set inside the cleaning tank, the solvent is sprayed from the cleaning nozzle to clean the print head, and the solvent after cleaning is recovered by the recovery container.Type: ApplicationFiled: May 19, 2020Publication date: August 11, 2022Inventors: Takahiro ARIMA, Sho MIZOGUCHI, Akira MIYAO, Fumiormi UEDA, Mamoru OKANO
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Publication number: 20210229446Abstract: An object of the present invention is to provide an inkjet recording device having a print head cleaning function of preventing a cleaning liquid from spilling around the inkjet recording device and storing the cleaning liquid used for cleaning in a highly airtight container.Type: ApplicationFiled: January 24, 2019Publication date: July 29, 2021Inventors: Shoki YAMAGUCHI, Takahiro ARIMA, Sho MIZOGUCHI, Mamoru OKANO, Akira MIYAO
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Publication number: 20210146687Abstract: An ink jet recording apparatus includes an ink container in which ink to be used to perform printing on a print target is stored, a nozzle which is connected to the ink container and from which pressurized and supplied ink is jetted, charging electrodes that charge ink particles jetted from the nozzle with electricity, deflecting electrodes that polarize the ink particles charged with electricity by the charging electrodes, a gutter that recovers ink not used for printing, a solvent container in which a solvent is stored, and a liquid nozzle which is connected to the solvent container and from which a pressurized and supplied solvent is jetted. The liquid nozzle includes a liquid flow passage portion that extends from the nozzle in a direction of the gutter, and a liquid jet hole that is formed at an angle allowing the pressurized and supplied solvent to hit the nozzle through the liquid flow passage portion.Type: ApplicationFiled: January 28, 2021Publication date: May 20, 2021Inventors: Takahiro ARIMA, Sho MIZOGUCHI, Mamoru OKANO
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Patent number: 10933642Abstract: An ink jet recording apparatus includes an ink container in which ink to be used to perform printing on a print target is stored, a nozzle which is connected to the ink container and from which pressurized and supplied ink is jetted, charging electrodes that charge ink particles jetted from the nozzle with electricity, deflecting electrodes that polarize the ink particles charged with electricity by the charging electrodes, a gutter that recovers ink not used for printing, a solvent container in which a solvent is stored, and a liquid nozzle which is connected to the solvent container and from which a pressurized and supplied solvent is jetted. The liquid nozzle includes a liquid flow passage portion that extends from the nozzle in a direction of the gutter, and a liquid jet hole that is formed at an angle allowing the pressurized and supplied solvent to hit the nozzle through the liquid flow passage portion.Type: GrantFiled: July 18, 2019Date of Patent: March 2, 2021Assignee: Hitachi Industrial Equipment Systems Co., Ltd.Inventors: Takahiro Arima, Sho Mizoguchi, Mamoru Okano
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Patent number: 10857787Abstract: Provided is an inkjet recording device, including a print head that includes a head base including: a nozzle from which ink is ejected; charging electrodes that charge the ink ejected from the nozzle; deflection electrodes that deflect the ink charged by the charging electrodes; and a gutter that collects ink not used in printing, and a head cover included in the head base, wherein the head base has a first horizontal uneven side portion, an oblique uneven side portion, and a second horizontal uneven side portion.Type: GrantFiled: August 21, 2017Date of Patent: December 8, 2020Assignee: Hitachi Industrial Equipment Systems Co., Ltd.Inventors: Takahiro Arima, Akira Maeda, Mamoru Okano
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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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Patent number: 10703095Abstract: The purpose of the present invention is to provide an inkjet recording device that is capable of minimizing contamination, by floating ink, of the inside and outside of a print head without increasing the volatilization volume of a solvent. In order to attain the purpose, provided is an inkjet recording device having: a nozzle which applies print onto a printing medium by discharging ink; and a print head which houses therein a deflection electrode for deflecting the discharged ink by means of an electrostatic force, the inkjet recording device being provided with an ink suction unit which sucks in floating ink by means of the electrostatic force.Type: GrantFiled: December 8, 2017Date of Patent: July 7, 2020Assignee: Hitachi Industrial Equipment Systems Co., Ltd.Inventors: Takehiko Matsushita, Mamoru Okano, Mitsuo Igari, Takahiro Arima
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Publication number: 20200101741Abstract: An ink jet recording apparatus includes an ink container in which ink to be used to perform printing on a print target is stored, a nozzle which is connected to the ink container and from which pressurized and supplied ink is jetted, charging electrodes that charge ink particles jetted from the nozzle with electricity, deflecting electrodes that polarize the ink particles charged with electricity by the charging electrodes, a gutter that recovers ink not used for printing, a solvent container in which a solvent is stored, and a liquid nozzle which is connected to the solvent container and from which a pressurized and supplied solvent is jetted. The liquid nozzle includes a liquid flow passage portion that extends from the nozzle in a direction of the gutter, and a liquid jet hole that is formed at an angle allowing the pressurized and supplied solvent to hit the nozzle through the liquid flow passage portion.Type: ApplicationFiled: July 18, 2019Publication date: April 2, 2020Inventors: Takahiro ARIMA, Sho MIZOGUCHI, Mamoru OKANO
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Publication number: 20190275789Abstract: The purpose of the present invention is to provide an inkjet recording device that is capable of minimizing contamination, by floating ink, of the inside and outside of a print head without increasing the volatilization volume of a solvent. In order to attain the purpose, provided is an inkjet recording device having: a nozzle which applies print onto a printing medium by discharging ink; and a print head which houses therein a deflection electrode for deflecting the discharged ink by means of an electrostatic force, the inkjet recording device being provided with an ink suction unit which sucks in floating ink by means of the electrostatic force.Type: ApplicationFiled: December 8, 2017Publication date: September 12, 2019Inventors: Takehiko MATSUSHITA, Mamoru OKANO, Mitsuo IGARI, Takahiro ARIMA
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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: 10183494Abstract: An inkjet recording apparatus includes an ink container. The ink container stores an ink for printing on a printing object. The inkjet recording apparatus also includes a stirring mechanism. The stirring mechanism stirs the ink stored in the ink container. The stirring mechanism includes a stationary shaft and a rotating body. The rotating body rotates around the stationary shaft. The stationary shaft and rotating body are placed in a lower part of the ink container.Type: GrantFiled: June 2, 2017Date of Patent: January 22, 2019Assignee: Hitachi Industrial Equipment Systems Co., Ltd.Inventors: Takahiro Arima, Mitsuo Igari, Mamoru Okano
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Publication number: 20180050535Abstract: Provided is an inkjet recording device, including a print head that includes a head base including: a nozzle from which ink is ejected; charging electrodes that charge the ink ejected from the nozzle; deflection electrodes that deflect the ink charged by the charging electrodes; and a gutter that collects ink not used in printing, and a head cover included in the head base, wherein the head base has a first horizontal uneven side portion, an oblique uneven side portion, and a second horizontal uneven side portion.Type: ApplicationFiled: August 21, 2017Publication date: February 22, 2018Inventors: Takahiro ARIMA, Akira MAEDA, Mamoru OKANO
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Publication number: 20170348977Abstract: An inkjet recording apparatus includes an ink container. The ink container stores an ink for printing on a printing object. The inkjet recording apparatus also includes a stirring mechanism. The stirring mechanism stirs the ink stored in the ink container. The stirring mechanism includes a stationary shaft and a rotating body. The rotating body rotates around the stationary shaft. The stationary shaft and rotating body are placed in a lower part of the ink container.Type: ApplicationFiled: June 2, 2017Publication date: December 7, 2017Inventors: Takahiro ARIMA, Mitsuo IGARI, Mamoru OKANO
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Patent number: 9744769Abstract: A gas-liquid separator includes a casing with a cylindrical chamber inside, a gas-liquid 2-phase inlet pipe which is attached to a wall of the casing and connected to the chamber, a gas outlet pipe for discharging the gas of a gas-liquid mixture flowing into the chamber, and the gas-liquid 2-phase outlet pipe for discharging the liquid as a most part of the gas-liquid mixture flowing into the chamber. A gap is formed around the gas-liquid outlet pipe in the chamber for separating the mixture into liquid and gas using the surface tension and suction force. The gas-liquid separator is installed in the inkjet recording apparatus, especially in the print head. The print head is filled with the solvent gas so as to be suctioned from the gutter to reduce the solvent consumption.Type: GrantFiled: August 30, 2016Date of Patent: August 29, 2017Assignee: HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD.Inventors: Takahiro Arima, Akira Miyao, Mitsuo Igari, Mamoru Okano, Tomohiro Inoue
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Publication number: 20160368270Abstract: A gas-liquid separator includes a casing with a cylindrical chamber inside, a gas-liquid 2-phase inlet pipe which is attached to a wall of the casing and connected to the chamber, a gas outlet pipe for discharging the gas of a gas-liquid mixture flowing into the chamber, and the gas-liquid 2-phase outlet pipe for discharging the liquid as a most part of the gas-liquid mixture flowing into the chamber. A gap is formed around the gas-liquid outlet pipe in the chamber for separating the mixture into liquid and gas using the surface tension and suction force. The gas-liquid separator is installed in the inkjet recording apparatus, especially in the print head. The print head is filled with the solvent gas so as to be suctioned from the gutter to reduce the solvent consumption.Type: ApplicationFiled: August 30, 2016Publication date: December 22, 2016Applicant: HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD.Inventors: Takahiro Arima, Akira Miyao, Mitsuo Igari, Mamoru Okano, Tomohiro Inoue
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Publication number: 20160361926Abstract: There is provided an inkjet recording device including a print head containing a nozzle that discharges ink to perform printing on a print medium. In the inkjet recording device, an ink recovery device that recovers floating ink with electrostatic force is provided on a lateral face of the print head. Thereby, the outside and the inside of the print head can be suppressed from being stained with the floating ink without the amount of evaporation of a solvent increasing.Type: ApplicationFiled: February 19, 2016Publication date: December 15, 2016Inventors: Mamoru OKANO, Nobuhiro HARADA, Mitsuo IGARI
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Patent number: 9481175Abstract: A gas-liquid separator includes a casing with a cylindrical chamber inside, a gas-liquid 2-phase inlet pipe which is attached to a wall of the casing and connected to the chamber, a gas outlet pipe for discharging the gas of a gas-liquid mixture flowing into the chamber, and the gas-liquid 2-phase outlet pipe for discharging the liquid as a most part of the gas-liquid mixture flowing into the chamber. A gap is formed around the gas-liquid outlet pipe in the chamber for separating the mixture into liquid and gas using the surface tension and suction force. The gas-liquid separator is installed in the inkjet recording apparatus, especially in the print head. The print head is filled with the solvent gas so as to be suctioned from the gutter to reduce the solvent consumption.Type: GrantFiled: March 7, 2016Date of Patent: November 1, 2016Assignee: HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD.Inventors: Takahiro Arima, Akira Miyao, Mitsuo Igari, Mamoru Okano, Tomohiro Inoue