Patents by Inventor Chikara Ishihara
Chikara Ishihara 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: 11964489Abstract: An inkjet recording apparatus includes a recording head including a plurality of nozzles for ejecting ink, a conveyor belt that has a plurality of apertures and conveys recording media one by one, a control unit, an ink receiver, and a pipe-shaped ink discharge flow path. The control unit controls drive of the recording head and the conveyor belt to perform flushing, in which the ink is ejected from the nozzle of the recording head to pass through one of the apertures, at a timing different from a timing contributing to image recording. The ink receiver is disposed to face the recording head sandwiching the conveyor belt therebetween, to receive the ink after passing through the aperture when the flushing is performed. The ink discharge flow path is connected to the ink receiver. When the flushing is performed, a predetermined amount of liquid is stored in the ink receiver.Type: GrantFiled: March 21, 2022Date of Patent: April 23, 2024Assignee: KYOCERA Document Solutions Inc.Inventors: Takashi Somete, Chikara Ishihara, Noriaki Furukawa, Takuma Araki, Jun Nakano, Hiroomi Nakatsuji, Issei Nakano
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Patent number: 11554588Abstract: The inkjet recording apparatus includes a conveyance belt, a conveyance plate, a suction unit, an inkjet head, and a cleaning unit. The conveyance belt has a plurality of through holes. The conveyance plate includes a plurality of through holes formed in bottom portions of the plurality of recessed portions. The suction unit is configured to suck the sheet to the conveyance belt. The inkjet head includes a head main body and a head end portion adjacent to the head main body, and faces an upper surface of the conveyance plate via the conveyance belt. The cleaning unit removes ink adhering to a lower surface of the head main body. A depth of the recessed portion in a facing region facing the head end portion of the conveyance plate is shallower than a depth of the recessed portion in a region other than the facing region.Type: GrantFiled: March 19, 2021Date of Patent: January 17, 2023Assignee: KYOCERA DOCUMENT SOLUTIONS INC.Inventors: Hiroyuki Ueda, Chikara Ishihara, Takashi Somete, Issei Nakano, Jun Nakano, Hiroomi Nakatsuji, Aiichiro Otana, Takuma Araki, Noriaki Furukawa, Yasutaka Inui
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Patent number: 11554587Abstract: The inkjet recording apparatus includes a conveyance belt, a conveyance plate, a suction unit, an inkjet head, and a cleaning unit. The conveyance belt has a plurality of through holes. The suction unit causes the conveyance belt to suck the sheet. The conveyance plate includes a plurality of through holes formed in bottom portions of the plurality of recessed portions. The inkjet head includes a head main body and a head end portion adjacent to the head main body, and faces an upper surface of the conveyance plate via the conveyance belt. The cleaning unit removes ink adhering to a lower surface of the head main body. A ratio of the recessed portions per unit area in a facing region of the conveyance plate facing the head end portion is smaller than a ratio of the recessed portions per unit area in a region other than the facing region.Type: GrantFiled: March 19, 2021Date of Patent: January 17, 2023Assignee: KYOCERA DOCUMENT SOLUTIONS INC.Inventors: Hiroyuki Ueda, Chikara Ishihara, Takashi Somete, Issei Nakano, Jun Nakano, Hiroomi Nakatsuji, Aiichiro Otana, Takuma Araki, Noriaki Furukawa, Yasutaka Inui
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Publication number: 20220305791Abstract: An inkjet recording apparatus includes a recording head including a plurality of nozzles for ejecting ink, a conveyor belt that has a plurality of apertures and conveys recording media one by one, a control unit, an ink receiver, and a pipe-shaped ink discharge flow path. The control unit controls drive of the recording head and the conveyor belt to perform flushing, in which the ink is ejected from the nozzle of the recording head to pass through one of the apertures, at a timing different from a timing contributing to image recording. The ink receiver is disposed to face the recording head sandwiching the conveyor belt therebetween, to receive the ink after passing through the aperture when the flushing is performed. The ink discharge flow path is connected to the ink receiver. When the flushing is performed, a predetermined amount of liquid is stored in the ink receiver.Type: ApplicationFiled: March 21, 2022Publication date: September 29, 2022Applicant: KYOCERA Document Solutions Inc.Inventors: Takashi SOMETE, Chikara ISHIHARA, Noriaki FURUKAWA, Takuma ARAKI, Jun NAKANO, Hiroomi NAKATSUJI, Issei NAKANO
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Patent number: 11396184Abstract: An ink jet recording apparatus includes a recording head, a wiper member, a cleaning liquid supply device, and a controller. The recording head includes an ink ejection surface having an ink ejection port from which ink is ejected. The cleaning liquid supply device includes a cleaning liquid supply surface having a cleaning liquid supply port from which cleaning liquid for wiping the ink ejection surface with the wiper member is supplied, and is located upstream of the ink ejection surface in a wiping direction. The controller controls a cleaning operation including squeezing out the cleaning liquid containing bubbles from the cleaning liquid supply port, and moving the wiper member carrying the cleaning liquid containing bubbles, in the wiping direction from a movement start position to an end position ahead of the ink ejection surface.Type: GrantFiled: May 29, 2020Date of Patent: July 26, 2022Assignee: KYOCERA Document Solutions Inc.Inventors: Issei Nakano, Takashi Somete, Chikara Ishihara, Hiroyuki Ueda, Hiroomi Nakatsuji, Noriaki Furukawa, Aiichiro Otana, Jun Nakano, Yasutaka Inui, Takuma Araki
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Patent number: 11161345Abstract: An inkjet recording apparatus includes a recording head, a wiper member, a cleaning liquid supply device, a cleaning liquid flow path, and a controller. The cleaning liquid flow path includes a vertical tubular member connected to the cleaning liquid supply device and extending upward, and a horizontal tubular member connected to an upper end of the vertical tubular member and extending in a horizontal direction. The controller extrudes a cleaning liquid in at least a part of the cleaning liquid flow path from a cleaning liquid supply port before control of a cleaning operation for wiping an ink ejection surface of the recording head, thereby performing control of an air bubble release operation of the cleaning liquid flow path.Type: GrantFiled: May 27, 2020Date of Patent: November 2, 2021Assignee: KYOCERA Document Solutions Inc.Inventors: Noriaki Furukawa, Takashi Somete, Chikara Ishihara, Hiroyuki Ueda, Hiroomi Nakatsuji, Issei Nakano, Aiichiro Otana, Jun Nakano, Yasutaka Inui, Takuma Araki
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Publication number: 20210300044Abstract: The inkjet recording apparatus includes a conveyance belt, a conveyance plate, a suction unit, an inkjet head, and a cleaning unit. The conveyance belt has a plurality of through holes. The suction unit causes the conveyance belt to suck the sheet. The conveyance plate includes a plurality of through holes formed in bottom portions of the plurality of recessed portions. The inkjet head includes a head main body and a head end portion adjacent to the head main body, and faces an upper surface of the conveyance plate via the conveyance belt. The cleaning unit removes ink adhering to a lower surface of the head main body. A ratio of the recessed portions per unit area in a facing region of the conveyance plate facing the head end portion is smaller than a ratio of the recessed portions per unit area in a region other than the facing region.Type: ApplicationFiled: March 19, 2021Publication date: September 30, 2021Inventors: Hiroyuki UEDA, Chikara ISHIHARA, Takashi SOMETE, lssei NAKANO, Jun NAKANO, Hiroomi NAKATSUJI, Aiichiro OTANA, Takuma ARAKI, Noriaki FURUKAWA, Yasutaka INUI
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Publication number: 20210300045Abstract: The inkjet recording apparatus includes a conveyance belt, a conveyance plate, a suction unit, an inkjet head, and a cleaning unit. The conveyance belt has a plurality of through holes. The conveyance plate includes a plurality of through holes formed in bottom portions of the plurality of recessed portions. The suction unit is configured to suck the sheet to the conveyance belt. The inkjet head includes a head main body and a head end portion adjacent to the head main body, and faces an upper surface of the conveyance plate via the conveyance belt. The cleaning unit removes ink adhering to a lower surface of the head main body. A depth of the recessed portion in a facing region facing the head end portion of the conveyance plate is shallower than a depth of the recessed portion in a region other than the facing region.Type: ApplicationFiled: March 19, 2021Publication date: September 30, 2021Inventors: Hiroyuki UEDA, Chikara Ishihara, Takashi Somete, Issei Nakano, Jun Nakano, Hiroomi Nakatsuji, Aiichiro Otana, Takuma Araki, Noriaki Furukawa, Yasutaka Inui
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Patent number: 10858976Abstract: An NH3 supply amount controller reduces and adjusts a supply amount of NH3 to an SCR catalyst by an NH3 supplier, when an exhaust gas flowing into an NOx catalyst has a rich air-fuel ratio and NOx occluded by the NOx catalyst is reduced to N2. A reduction amount of the supply amount of the NH3 controlled by the NH3 supply amount controller is set larger when s flow amount of the exhaust gas detected or estimated by an exhaust-gas flow amount detector is larger.Type: GrantFiled: October 13, 2017Date of Patent: December 8, 2020Assignee: MAZDA MOTOR CORPORATIONInventors: Goro Tsuboi, Takayuki Yamaguchi, Daishi Ikeda, Yoshiaki Tomita, Chikara Ishihara
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Patent number: 10858978Abstract: An NH3 supply amount controller reduces and adjusts a supply amount of NH3 to an SCR catalyst by an NH3 supplier, when an exhaust gas flowing into an NOX catalyst has a rich air-fuel ratio and NOX occluded by the NOX catalyst is reduced to N2. A reduction amount of the supply amount of the NH3 controlled by the NH3 supply amount controller is set larger when an amount of reducing agent detected or estimated by a reducing agent amount detector is larger.Type: GrantFiled: October 13, 2017Date of Patent: December 8, 2020Assignee: MAZDA MOTOR CORPORATIONInventors: Goro Tsuboi, Takayuki Yamaguchi, Daishi Ikeda, Yoshiaki Tomita, Chikara Ishihara
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Patent number: 10858977Abstract: An NH3 supply amount controller reduces and adjusts a supply amount of NH3 to an SCR catalyst by an NH3 supplier, when an exhaust gas flowing into an NOX catalyst has a rich air-fuel ratio and NOX occluded by the NOX catalyst is reduced to N2. A reduction amount of the supply amount of the NH3 controlled by the NH3 supply amount controller is set smaller when a temperature of the NOX catalyst detected or estimated by an NOX catalyst temperature detector is higher.Type: GrantFiled: October 13, 2017Date of Patent: December 8, 2020Assignee: MAZDA MOTOR CORPORATIONInventors: Goro Tsuboi, Takayuki Yamaguchi, Daishi Ikeda, Yoshiaki Tomita, Chikara Ishihara
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Publication number: 20200376845Abstract: An inkjet recording apparatus includes a recording head, a wiper member, a cleaning liquid supply device, a cleaning liquid flow path, and a controller. The cleaning liquid flow path includes a vertical tubular member connected to the cleaning liquid supply device and extending upward, and a horizontal tubular member connected to an upper end of the vertical tubular member and extending in a horizontal direction. The controller extrudes a cleaning liquid in at least a part of the cleaning liquid flow path from a cleaning liquid supply port before control of a cleaning operation for wiping an ink ejection surface of the recording head, thereby performing control of an air bubble release operation of the cleaning liquid flow path.Type: ApplicationFiled: May 27, 2020Publication date: December 3, 2020Applicant: KYOCERA Document Solutions Inc.Inventors: Noriaki FURUKAWA, Takashi SOMETE, Chikara ISHIHARA, Hiroyuki UEDA, Hiroomi NAKATSUJI, Issei NAKANO, Aiichiro OTANA, Jun NAKANO, Yasutaka INUI, Takuma ARAKI
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Publication number: 20200376834Abstract: An ink jet recording apparatus includes a recording head, a wiper member, a cleaning liquid supply device, and a controller. The recording head includes an ink ejection surface having an ink ejection port from which ink is ejected. The cleaning liquid supply device includes a cleaning liquid supply surface having a cleaning liquid supply port from which cleaning liquid for wiping the ink ejection surface with the wiper member is supplied, and is located upstream of the ink ejection surface in a wiping direction. The controller controls a cleaning operation including squeezing out the cleaning liquid containing bubbles from the cleaning liquid supply port, and moving the wiper member carrying the cleaning liquid containing bubbles, in the wiping direction from a movement start position to an end position ahead of the ink ejection surface.Type: ApplicationFiled: May 29, 2020Publication date: December 3, 2020Applicant: KYOCERA Document Solutions Inc.Inventors: Issei NAKANO, Takashi SOMETE, Chikara ISHIHARA, Hiroyuki UEDA, Hiroomi NAKATSUJI, Noriaki FURUKAWA, Aiichiro OTANA, Jun NAKANO, Yasutaka INUI, Takuma ARAKI
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Publication number: 20200056527Abstract: An NH3 supply amount controller reduces and adjusts a supply amount of NH3 to an SCR catalyst by an NH3 supplier, when an exhaust gas flowing into an NOx catalyst has a rich air-fuel ratio and NOx occluded by the NOx catalyst is reduced to N2. A reduction amount of the supply amount of the NH3 controlled by the NH3 supply amount controller is set larger when an amount of reducing agent detected or estimated by a reducing agent amount detector is larger.Type: ApplicationFiled: October 13, 2017Publication date: February 20, 2020Applicant: MAZDA MOTOR CORPORATIONInventors: Goro TSUBOI, Takayuki YAMAGUCHI, Daishi IKEDA, Yoshiaki TOMITA, Chikara ISHIHARA
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Publication number: 20200056521Abstract: An NH3 supply amount controller reduces and adjusts a supply amount of NH3 to an SCR catalyst by an NH3 supplier, when an exhaust gas flowing into an NOx catalyst has a rich air-fuel ratio and NOx occluded by the NOx catalyst is reduced to N2. A reduction amount of the supply amount of the NH3 controlled by the NH3 supply amount controller is set larger when s flow amount of the exhaust gas detected or estimated by an exhaust-gas flow amount detector is larger.Type: ApplicationFiled: October 13, 2017Publication date: February 20, 2020Applicant: MAZDA MOTOR CORPORATIONInventors: Goro TSUBOI, Takayuki YAMAGUCHI, Daishi IKEDA, Yoshiaki TOMITA, Chikara ISHIHARA
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Publication number: 20200056526Abstract: An NH3 supply amount controller reduces and adjusts a supply amount of NH3 to an SCR catalyst by an NH3 supplier, when an exhaust gas flowing into an NOX catalyst has a rich air-fuel ratio and NOX occluded by the NOX catalyst is reduced to N2. A reduction amount of the supply amount of the NH3 controlled by the NH3 supply amount controller is set smaller when a temperature of the NOX catalyst detected or estimated by an NOX catalyst temperature detector is higher.Type: ApplicationFiled: October 13, 2017Publication date: February 20, 2020Applicant: MAZDA MOTOR CORPORATIONInventors: Goro TSUBOI, Takayuki YAMAGUCHI, Daishi IKEDA, Yoshiaki TOMITA, Chikara ISHIHARA
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Publication number: 20190358957Abstract: A wiping device wipes off ink attached to an ink discharge surface of a recording head. The wiping device includes a wiper. The wiper wipes off ink attached to the ink discharge surface of the recording head. The wiper is formed of a material having elasticity. The wiper includes a blade pressed to the ink discharge surface. The blade has a shape easily deformed in a direction perpendicular to the ink discharge surface.Type: ApplicationFiled: May 20, 2019Publication date: November 28, 2019Inventors: Takashi Somete, Noriaki Furukawa, Aiichiro Otana, Kenichi Satake, Takuma Araki, Yasutaka Inui, Chikara Ishihara, Yuzuru Yuasa
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Patent number: 9298126Abstract: A developing device includes a housing, a development roller, and a roller gear. The roller gear is disposed at one axial end of the development roller and transmits a rotational drive force to the development roller. The development roller includes a sleeve and a coating layer. The coating layer is formed by dipping the sleeve in a dipping bath with the sleeve directed axially vertically. The development roller is mounted to the housing such that a lower axial end of the development roller at the time of the dipping is an opposite axial end to the one axial end at which the roller gear is disposed.Type: GrantFiled: March 27, 2015Date of Patent: March 29, 2016Assignee: KYOCERA Document Solution Inc.Inventors: Tamotsu Shimizu, Akihiro Watanabe, Chikara Ishihara, Yasuhiro Tauchi, Masashi Fujishima, Yu Sasaki, Hiroaki Sakai, Yasuhiro Oishi, Yukimasa Watanabe
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Patent number: 9285713Abstract: A developing device supplies a developer to a photosensitive drum, which has a cylindrical shape, and is rotatable around an axis thereof for forming an electrostatic latent image on the circumferential surface thereof. The developing device is provided with a developing roller. The developing roller is disposed to face the photosensitive drum, and has a cylindrical shape. The developing roller is rotatable around an axis thereof for carrying a developer on the circumferential surface thereof. The developing roller is provided with a small diameter portion. The small diameter portion is a part of the circumferential surface of the developing roller. The small diameter portion extends from an axial end of the developing roller axially inward by a predetermined length, and has an outer diameter smaller than an axially middle portion of the developing roller.Type: GrantFiled: April 7, 2015Date of Patent: March 15, 2016Assignee: KYOCERA Document Solutions Inc.Inventors: Sakae Saito, Hiroaki Sakai, Yukimasa Watanabe, Yasuhiro Oishi, Masashi Fujishima, Chikara Ishihara, Yasuhiro Tauchi
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Patent number: 9201349Abstract: Developing device includes developing roller and magnetic roller. Developing roller includes aluminum oxide thin film and resin coat layer. Magnetic roller is disposed to face, without contact, outer circumferential surface of developing roller, and includes aluminum oxide thin film formed on outer circumferential surface of base body that is made of metal including aluminum. Magnetic roller forms toner layer on surface of developing roller via magnetic brush composed of toner and magnetic carrier. AC impedance Z1 is in range from 1.0×105? to 1.0×106? and surface roughness Ra of resin coat layer is in range from 0.057 ?m to 0.280 ?m, AC impedance Z1 being obtained when AC voltage at predetermined frequency is applied to between base body of magnetic roller and base body of developing roller in a state where the magnetic brush is formed on magnetic roller.Type: GrantFiled: December 15, 2014Date of Patent: December 1, 2015Assignee: KYOCERA Document Solutions Inc.Inventors: Tamotsu Shimizu, Shizuka Okada, Yuji Kamiyama, Sakae Saito, Yasuhiro Oishi, Masashi Fujishima, Chikara Ishihara