Patents by Inventor Hirohisa Shirai
Hirohisa Shirai 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: 10711751Abstract: A fuel supply system for an engine having a plurality of cylinders is provided, which includes a plurality of fuel injection valves configured to inject fuel into the cylinders in a given order, a first distribution pipe configured to distributingly supply fuel to some of the plurality of fuel injection valves of which the fuel injection orders are not successive in the given order, a second distribution pipe configured to distributingly supply fuel to a remainder of the plurality of fuel injection valves of which the fuel injection orders are not successive in the given order, a fuel pump part configured to discharge fuel, a first feed pipe connecting a first discharge part of the fuel pump part with the first distribution pipe, and a second feed pipe connecting a second discharge part of the fuel pump part and the second distribution pipe.Type: GrantFiled: December 13, 2018Date of Patent: July 14, 2020Assignee: Mazda Motor CorporationInventors: Kazunori Hirabayashi, Hirohisa Shirai, Hiroshi Komatsu, Shinichiro Tagami, Hiroshi Sumimoto
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Publication number: 20190242348Abstract: A fuel supply system for an engine having a plurality of cylinders is provided, which includes a plurality of fuel injection valves configured to inject fuel into the cylinders in a given order, a first distribution pipe configured to distributingly supply fuel to some of the plurality of fuel injection valves of which the fuel injection orders are not successive in the given order, a second distribution pipe configured to distributingly supply fuel to a remainder of the plurality of fuel injection valves of which the fuel injection orders are not successive in the given order, a fuel pump part configured to discharge fuel, a first feed pipe connecting a first discharge part of the fuel pump part with the first distribution pipe, and a second feed pipe connecting a second discharge part of the fuel pump part and the second distribution pipe.Type: ApplicationFiled: December 13, 2018Publication date: August 8, 2019Inventors: Kazunori Hirabayashi, Hirohisa Shirai, Hiroshi Komatsu, Shinichiro Tagami, Hiroshi Sumimoto
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Patent number: 9665030Abstract: An image forming apparatus has: an image supporting member, a charger, a power source unit, an amperometric detector, and a processor. The power source unit applies a plurality of charging voltages, which includes alternating voltages respectively, to the charger sequentially while no print medium is fed. The alternating voltages have different peak-to-peak voltages for a forward discharge range and different peak-to-peak voltages for a reverse discharge range, respectively. The amperometric detector detects values of alternating current flowing in the charger during application of the charging voltages. The processor derives characteristic lines of alternating current value with respect to alternating voltage for the forward discharge range and for the reverse discharge range, respectively, from the values detected by the amperometric detector. The processor derives a peak-to-peak voltage to be used in a process in a different way depending on a difference in slope between the characteristic lines.Type: GrantFiled: February 22, 2016Date of Patent: May 30, 2017Assignee: KONICA MINOLTA, INC.Inventors: Tomohiro Kato, Kazuki Kobori, Hirohisa Shirai, Hisashi Murata, Masato Kimura
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Patent number: 9568851Abstract: An image forming apparatus that forms an image on a medium includes: an image carrying member; a charging unit disposed in proximity to the image carrying member; a power supply unit configured to sequentially apply a plurality of charging voltages to the charging unit when the medium is not fed through; a current detecting unit configured to detect an AC value flowing through the charging unit; a processing unit configured to perform first charging voltage determination control to derive a peak-to-peak voltage value to be used in a process; and a storage unit configured to pre-store a reference peak-to-peak voltage value for each wastage level of the image carrying member, wherein the processing unit: prohibits execution of the first charging voltage determination control and performs second charging voltage determination control; and obtains a reference peak-to-peak voltage value and derives a peak-to-peak voltage value to be used in the process.Type: GrantFiled: February 25, 2016Date of Patent: February 14, 2017Assignee: KONICA MINOLTA, INC.Inventors: Hisashi Murata, Kazuki Kobori, Hirohisa Shirai, Masato Kimura
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Patent number: 9482981Abstract: An image forming apparatus has: an image supporting member; a charger in proximity to the image supporting member; a power source unit configured to apply charging voltages to the charger sequentially, the charging voltages including alternating voltages having different peak-to-peak voltages, respectively; an amperometric detector configured to detect values of alternating currents flowing in the charger during application of the charging voltages; and a processor configured to carry out a first charging voltage determination process or a second charging voltage determination process requiring a shorter time than the first charging voltage determination process selectively based on a detection result of the amperometric detector.Type: GrantFiled: February 22, 2016Date of Patent: November 1, 2016Assignee: KONICA MINOLTA, INC.Inventors: Tomohiro Kato, Kazuki Kobori, Hirohisa Shirai, Hisashi Murata, Masato Kimura
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Publication number: 20160252839Abstract: An image forming apparatus has: an image supporting member, a charger, a power source unit, an amperometric detector, and a processor. The power source unit applies a plurality of charging voltages, which includes alternating voltages respectively, to the charger sequentially while no print medium is fed. The alternating voltages have different peak-to-peak voltages for a forward discharge range and different peak-to-peak voltages for a reverse discharge range, respectively. The amperometric detector detects values of alternating current flowing in the charger during application of the charging voltages. The processor derives characteristic lines of alternating current value with respect to alternating voltage for the forward discharge range and for the reverse discharge range, respectively, from the values detected by the amperometric detector. The processor derives a peak-to-peak voltage to be used in a process in a different way depending on a difference in slope between the characteristic lines.Type: ApplicationFiled: February 22, 2016Publication date: September 1, 2016Applicant: KONICA MINOLTA, INC.Inventors: Tomohiro KATO, Kazuki KOBORI, Hirohisa SHIRAI, Hisashi MURATA, Masato KIMURA
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Publication number: 20160252838Abstract: An image forming apparatus has: an image supporting member; a charger in proximity to the image supporting member; a power source unit configured to apply charging voltages to the charger sequentially, the charging voltages including alternating voltages having different peak-to-peak voltages, respectively; an amperometric detector configured to detect values of alternating currents flowing in the charger during application of the charging voltages; and a processor configured to carry out a first charging voltage determination process or a second charging voltage determination process requiring a shorter time than the first charging voltage determination process selectively based on a detection result of the amperometric detector.Type: ApplicationFiled: February 22, 2016Publication date: September 1, 2016Applicant: KONICA MINOLTA, INC.Inventors: Tomohiro KATO, Kazuki KOBORI, Hirohisa SHIRAI, Hisashi MURATA, Masato KIMURA
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Publication number: 20160252840Abstract: An image forming apparatus that forms an image on a medium includes: an image carrying member; a charging unit disposed in proximity to the image carrying member; a power supply unit configured to sequentially apply a plurality of charging voltages to the charging unit when the medium is not fed through; a current detecting unit configured to detect an AC value flowing through the charging unit; a processing unit configured to perform first charging voltage determination control to derive a peak-to-peak voltage value to be used in a process; and a storage unit configured to pre-store a reference peak-to-peak voltage value for each wastage level of the image carrying member, wherein the processing unit: prohibits execution of the first charging voltage determination control and performs second charging voltage determination control; and obtains a reference peak-to-peak voltage value and derives a peak-to-peak voltage value to be used in the process.Type: ApplicationFiled: February 25, 2016Publication date: September 1, 2016Applicant: Konica Minolta, Inc.Inventors: Hisashi MURATA, Kazuki KOBORI, Hirohisa SHIRAI, Masato KIMURA
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Patent number: 9190460Abstract: An organic light emitting device includes a first electrode and a second electrode, an organic layer including a light emitting layer between the first electrode and the second electrode, and an insulating film covering a rim of the first electrode from a surface thereof to a side surface thereof, and having an internal wall surface being in contact with the organic layer, and one or more corner sections in the internal wall surface with a ridge line thereof in parallel with the surface of the first electrode.Type: GrantFiled: November 18, 2014Date of Patent: November 17, 2015Assignee: Sony CorporationInventors: Seiichi Yokoyama, Atsuya Makita, Eiji Hasegawa, Jiro Yamada, Hirohisa Shirai, Yasutaka Koga, Shinsuke Hibarino
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Publication number: 20150069375Abstract: An organic light emitting device includes a first electrode and a second electrode, an organic layer including a light emitting layer between the first electrode and the second electrode, and an insulating film covering a rim of the first electrode from a surface thereof to a side surface thereof, and having an internal wall surface being in contact with the organic layer, and one or more corner sections in the internal wall surface with a ridge line thereof in parallel with the surface of the first electrode.Type: ApplicationFiled: November 18, 2014Publication date: March 12, 2015Inventors: Seiichi Yokoyama, Atsuya Makita, Eiji Hasegawa, Jiro Yamada, Hirohisa Shirai, Yasutaka Koga, Shinsuke Hibarino
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Patent number: 8963170Abstract: An organic light emitting device includes a first electrode and a second electrode, an organic layer including a light emitting layer between the first electrode and the second electrode, and an insulating film covering a rim of the first electrode from a surface thereof to a side surface thereof, and having an internal wall surface being in contact with the organic layer, and one or more corner sections in the internal wall surface with a ridge line thereof in parallel with the surface of the first electrode.Type: GrantFiled: March 6, 2012Date of Patent: February 24, 2015Assignee: Sony CorporationInventors: Seiichi Yokoyama, Atsuya Makita, Eiji Hasegawa, Jiro Yamada, Hirohisa Shirai, Yasutaka Koga, Shinsuke Hibarino
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Publication number: 20120248467Abstract: An organic light emitting device includes a first electrode and a second electrode, an organic layer including a light emitting layer between the first electrode and the second electrode, and an insulating film covering a rim of the first electrode from a surface thereof to a side surface thereof, and having an internal wall surface being in contact with the organic layer, and one or more corner sections in the internal wall surface with a ridge line thereof in parallel with the surface of the first electrode.Type: ApplicationFiled: March 6, 2012Publication date: October 4, 2012Applicant: Sony CorporationInventors: Seiichi Yokoyama, Atsuya Makita, Eiji Hasegawa, Jiro Yamada, Hirohisa Shirai, Yasutaka Koga, Shinsuke Hibarino
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Patent number: 5717980Abstract: An image forming device having a transfer unit that transfers the toner image formed on the image carrier onto transfer paper, such that the toner image can be transferred with good results regardless of fluctuations in the environment, by (a) returning to the feedback side of the power source, via a constant voltage element, part of the electric current that flows to (i) the transfer unit, to which a prescribed voltage is applied by the power source, and (ii) the guide member that supports the transfer paper, said electric current flowing to said guide member via said transfer paper, and by (b) controlling the voltage of the power source such that the voltage on the feedback side of the power source will be constant.Type: GrantFiled: November 7, 1996Date of Patent: February 10, 1998Assignee: Minolta Co., Ltd.Inventors: Takeki Oka, Makoto Shimazoe, Munenori Nakano, Hirohisa Shirai