Patents by Inventor Eiji Tabata
Eiji Tabata 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: 20250083451Abstract: Provided is a deaeration device that includes an external reflux-type deaeration module including a gas permeable membrane capable of removing dissolved gas in liquid, and a hardware processor. The deaeration module includes a first vacuum chamber that communicates with a first end of the gas permeable membrane, a second vacuum chamber that communicates with a second end of the gas permeable membrane, and an atmospheric vent valve that opens or closes an inside of the deaeration module to atmosphere. The hardware processor determines a deterioration in deaeration performance of the deaeration module based on a pressure difference between the first vacuum chamber and the second vacuum chamber when the atmospheric vent valve is closed.Type: ApplicationFiled: September 11, 2024Publication date: March 13, 2025Inventors: Hiroshi AKITA, Akihiro OKUNO, Hiroshi SHIBATA, Eiji TABATA
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Patent number: 11566201Abstract: A plunger lubricant for die casting includes a component (a), a component (b), a component (c), and water. The component (a) is one or two or more compounds selected from among mineral oils, synthetic hydrocarbons, and fatty acid esters. The component (b) is one or two or more compounds selected from among alkali metal salts of higher fatty acids or alkali metal salts of aliphatic hydroxy acids. The component (c) is an alkali metal salt of an oxoacid or polyoxoacid that is able to be dehydrated and condensed.Type: GrantFiled: September 13, 2021Date of Patent: January 31, 2023Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, Nippon Quaker Chemical, Ltd.Inventors: Soichiro Ishida, Eiji Tabata, Yuichi Furukawa, Katsumi Hongyo, Toshikazu Ikeda
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Publication number: 20220081640Abstract: A plunger lubricant for die casting includes a component (a), a component (b), a component (c), and water. The component (a) is one or two or more compounds selected from among mineral oils, synthetic hydrocarbons, and fatty acid esters. The component (b) is one or two or more compounds selected from among alkali metal salts of higher fatty acids or alkali metal salts of aliphatic hydroxy acids. The component (c) is an alkali metal salt of an oxoacid or polyoxoacid that is able to be dehydrated and condensed.Type: ApplicationFiled: September 13, 2021Publication date: March 17, 2022Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, Nippon Quaker Chemical, Ltd.Inventors: Soichiro ISHIDA, Eiji TABATA, Yuichi FURUKAWA, Katsumi HONGYO, Toshikazu IKEDA
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Publication number: 20220082630Abstract: Provided is a device for detecting the state of health and the state of charge of a power storage element, which is capable of accurately and instantaneously detecting the state of health SOH and the state of charge SOC of a power storage element, thereby enabling recognition of a battery state. A detection device 1 for detecting the state of health and the state of charge of a secondary battery 10 detects the state of health SOH and the state of charge SOC and comprises a measuring means for measuring a voltage and a current of the secondary battery 10; and a control unit having a calculating means for executing a predetermined calculation. The control unit 14 determines overvoltage ? during operation of the secondary battery by calculation based on measured values of rising voltage and current at a start of charging of the secondary battery according to the battery equation shown in [Math. 1].Type: ApplicationFiled: January 15, 2020Publication date: March 17, 2022Inventors: Hiromi TAKAOKA, Osamu TAKEMURA, Eiji TABATA
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Publication number: 20200298605Abstract: An image forming apparatus includes a precoating layer forming unit that forms a precoating layer on a surface of a recording medium, an image forming unit that forms an image on the precoating layer with ink, and a light energy emitter that emits light energy for drying the ink to the recording medium. The precoating layer contains a reflective agent that reflects light energy.Type: ApplicationFiled: January 28, 2020Publication date: September 24, 2020Inventors: Kazuko FUKUMOTO, Eiji TABATA, Makiko WATANABE
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Publication number: 20200230976Abstract: An image forming apparatus includes: a drying device that dries ink on a printing medium; a feeder that feeds, to the drying device, the printing medium on which an image is formed with ink; and a control device that controls the drying device and the feeder. The control device causes the drying device to perform: a first drying process of drying the image on the printing medium fed to the drying device; and, after the first drying process, a second drying process of applying vibrations to ink that forms the image.Type: ApplicationFiled: December 13, 2019Publication date: July 23, 2020Inventors: Kazuko FUKUMOTO, Eiji TABATA, Makiko WATANABE
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Patent number: 10711220Abstract: An oil-based release agent of the present invention contains a petroleum-based hydrocarbon solvent (a) and a high temperature adhesive (b), is applied to a metal die used for die casting or casting, has high adhesion and high lubricity even with respect to a metal die at a high temperature particularly of 300° C. or higher, and can prevent seizure. In addition, the present invention provides a method for applying the oil-based release agent of the present invention by controlling an adhesion amount thereof by micronization and speed-control thereof with respect to a metal die at a high temperature, and an electrostatic application method.Type: GrantFiled: January 30, 2015Date of Patent: July 14, 2020Assignees: AOKI SCIENCE INSTITUTE CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA, MEC INTERNATIONAL CO., LTD.Inventors: Hiroaki Komatsubara, Masanao Kobayashi, Toshiaki Shimizu, Ikuo Yamauchi, Takashi Morikawa, Eiji Tabata, Fumio Kawahara, Yuzo Matsuda
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Patent number: 10678175Abstract: An image forming device includes: an endless intermediate transfer belt; and a secondary transferrer, wherein the secondary transferrer includes a secondary transfer roller and a counter roller, a value calculated from w/Vsys is defined as a nip time N [sec], when the secondary transferrer is deemed as an equivalent circuit including a resistance R1 [?·m2] of the secondary transfer roller, a resistance R2 [?·m2] of the intermediate transfer belt, a resistance R3 [?·m2] of the counter roller, and capacitance Cmed [F/m2] of a recording medium, in a case where a combined resistance in the equivalent circuit is defined as Rtotal [?·m2], and combined capacitance in the equivalent circuit is defined as Ctotal [F/m2], a value calculated from Rtotal×Ctotal is defined as a time constant ? [sec], and the image forming device further includes: a sheet detector; and a hardware processor.Type: GrantFiled: August 30, 2018Date of Patent: June 9, 2020Assignee: KONICA MINOLTA, INC.Inventors: Eiji Tabata, Nofumi Mizumoto, Makiko Watanabe, Shigeo Uetake, Toshiya Natsuhara
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Patent number: 10656569Abstract: Prevention of an image defect due to discharging in a transfer portion and ensured transfer efficiency are both achieved. A control electrode is in contact with an outer circumferential surface of a secondary transfer roller on an upstream side of a position of contact between the secondary transfer roller and a recording medium in a direction of rotation of the secondary transfer roller. The control electrode has a potential set to a repel a toner image with respect to the secondary transfer roller. The control electrode is in contact with the outer circumferential surface of the secondary transfer roller under such a condition that discharging occurs in a gap between the secondary transfer roller and the intermediate transfer belt and a discharging current flows through the recording medium.Type: GrantFiled: April 22, 2019Date of Patent: May 19, 2020Assignee: KONICA MINOLTA, INC.Inventors: Makiko Watanabe, Eiji Tabata, Nofumi Mizumoto, Toshiya Natsuhara
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Publication number: 20190346793Abstract: Prevention of an image defect due to discharging in a transfer portion and ensured transfer efficiency are both achieved. A control electrode is in contact with an outer circumferential surface of a secondary transfer roller on an upstream side of a position of contact between the secondary transfer roller and a recording medium in a direction of rotation of the secondary transfer roller. The control electrode has a potential set to a repel a toner image with respect to the secondary transfer roller. The control electrode is in contact with the outer circumferential surface of the secondary transfer roller under such a condition that discharging occurs in a gap between the secondary transfer roller and the intermediate transfer belt and a discharging current flows through the recording medium.Type: ApplicationFiled: April 22, 2019Publication date: November 14, 2019Inventors: Makiko WATANABE, Eiji TABATA, Nofumi MIZUMOTO, Toshiya NATSUHARA
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Patent number: 10322446Abstract: There is provided a nitrided layer repair method in which a molten metal is pressurized and solidified, and thus a nitrided layer formed on a cavity surface of a mold used to form a casting object is repaired. In the nitrided layer repair method, a nitriding source is applied to the cavity surface, and the cavity surface of the mold is nitrided by heating and pressurizing the cavity surface using the molten metal.Type: GrantFiled: September 12, 2017Date of Patent: June 18, 2019Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, TETRA CO., LTD, TOYOTA SCHOOL FOUNDATIONInventors: Eiji Tabata, Yuichi Furukawa, Yoshiki Tsunekawa, Hiroyuki Matsubara
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Publication number: 20190094780Abstract: An image forming device includes: an endless intermediate transfer belt; and a secondary transferrer, wherein the secondary transferrer includes a secondary transfer roller and a counter roller, a value calculated from w/Vsys is defined as a nip time N [sec], when the secondary transferrer is deemed as an equivalent circuit including a resistance R1 [?·m2] of the secondary transfer roller, a resistance R2 [?·m2] of the intermediate transfer belt, a resistance R3 [?·m2] of the counter roller, and capacitance Cmed [F/m2] of a recording medium, in a case where a combined resistance in the equivalent circuit is defined as Rtotal [?·m2], and combined capacitance in the equivalent circuit is defined as Ctotal [F/m2], a value calculated from Rtotal×Ctotal is defined as a time constant ? [sec], and the image forming device further includes: a sheet detector; and a hardware processor.Type: ApplicationFiled: August 30, 2018Publication date: March 28, 2019Inventors: Eiji TABATA, Nofumi MIZUMOTO, Makiko WATANABE, Shigeo UETAKE, Toshiya NATSUHARA
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Patent number: 10025231Abstract: A transfer belt includes: an elastic layer, wherein the transfer belt is used to transfer a toner image onto a recording medium, the toner image being carried on a first main surface which is one of a pair of main exposed surfaces including the first main surface and a second main surface, when, using a lower block and an upper block, the transfer belt is placed on an upper surface of the lower block, a part of the transfer belt is interposed between a curved convex surface and a curved concave surface, and a pressed region reaches a pressing force of 200 [kPa] and is constantly pressed by the pressing force, if “a” represents a maximum value of displacement of a measurement region, and “b” represents displacement of the measurement region after convergence, E [?] calculated by (a?b)/b satisfies a condition of 0.2?E?3.Type: GrantFiled: June 29, 2017Date of Patent: July 17, 2018Assignee: Konica Minolta, Inc.Inventors: Nofumi Mizumoto, Shigeo Uetake, Keiko Momotani, Eiji Tabata, Makiko Watanabe, Toshiya Natsuhara
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Patent number: 9989877Abstract: A transfer belt transfers a toner image carried on a first main surface to a recording medium. When the transfer belt is pressed by using a lower block provided with a hole and an upper block with pressurization force increased at a prescribed rate and thereafter kept constant, E [-] and t0 are curve-fitted to a function E=?×exp(?t0/?) defined by a time constant ? [s] with respect to an amount of displacement of the transfer belt and a constant ? [-], where E [-] is calculated as (a?b)/b, a [?m] represents a maximum value of an amount of displacement of a measurement region, b [?m] represents an amount of displacement of the measurement region after converged, and t0 [s] represents a time period from start of pressurization until the maximum pressurization force, and time constant ? satisfies a condition of 0.015???0.1.Type: GrantFiled: September 22, 2017Date of Patent: June 5, 2018Assignee: KONICA MINOLTA, INC.Inventors: Eiji Tabata, Makiko Watanabe, Nofumi Mizumoto, Keiko Momotani, Shigeo Uetake, Toshiya Natsuhara
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Patent number: 9983520Abstract: A transfer belt is configured to transfer a toner image carried on a first main surface of the transfer belt to a recording medium. When the transfer belt is pressed with pressure application three increased at a predetermined pressure application rate and is then pressed with certain pressure application force by using a lower block provided with a hole and an upper block, k2 [?m/s] satisfies 6?k2?30, k2 [?m/s] being determined by (a?b)/{2×(t2?t1)}, where a [?m/s] represents a maximum value of a displacement amount of a measurement region that is a portion of the first main surface corresponding to the hole, b [?m] represents a convergence value thereof, t1 [s] represents a time when the maximum value is observed, and t2 [s] represents a time when the displacement amount reaches (a+b)/2 again after the maximum value is observed.Type: GrantFiled: June 27, 2017Date of Patent: May 29, 2018Assignee: KONICA MINOLTA, INC.Inventors: Eiji Tabata, Nofumi Mizumoto, Toshiya Natsuhara, Shigeo Uetake, Keiko Momotani, Makiko Watanabe
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Publication number: 20180095376Abstract: A transfer belt transfers a toner image carried on a first main surface to a recording medium. When the transfer belt is pressed by using a lower block provided with a hole and an upper block with pressurization force increased at a prescribed rate and thereafter kept constant, E [-] and t0 are curve-fitted to a function E=?×exp(?t0/?) defined by a time constant ? [s] with respect to an amount of displacement of the transfer belt and a constant ? [-], where E [-] is calculated as (a?b)/b, a [?m] represents a maximum value of an amount of displacement of a measurement region, b [?m] represents an amount of displacement of the measurement region after converged, and t0 [s] represents a time period from start of pressurization until the maximum pressurization force, and time constant ? satisfies a condition of 0.015???0.1.Type: ApplicationFiled: September 22, 2017Publication date: April 5, 2018Inventors: Eiji TABATA, Makiko WATANABE, Nofumi MIZUMOTO, Keiko MOMOTANI, Shigeo UETAKE, Toshiya NATSUHARA
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Publication number: 20180085823Abstract: There is provided a nitrided layer repair method in which a molten metal is pressurized and solidified, and thus a nitrided layer formed on a cavity surface of a mold used to form a casting object is repaired. In the nitrided layer repair method, a nitriding source is applied to the cavity surface, and the cavity surface of the mold is nitrided by heating and pressurizing the cavity surface using the molten metal.Type: ApplicationFiled: September 12, 2017Publication date: March 29, 2018Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota School Foundation, TETRA Co., Ltd.Inventors: Eiji TABATA, Yuichi FURUKAWA, Yoshiki TSUNEKAWA, Hiroyuki MATSUBARA
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Publication number: 20180011428Abstract: A transfer belt is configured to transfer a toner image carried on a first main surface of the transfer belt to a recording medium. When the transfer belt is pressed with pressure application three increased at a predetermined pressure application rate and is then pressed with certain pressure application force by using a lower block provided with a hole and an upper block, k2[?m/s] satisfies 6?k2?30, k2[?m/s] being determined by (a?b)/{2×(t2?t1)}, where a [?m/s] represents a maximum value of a displacement amount of a measurement region that is a portion of the first main surface corresponding to the hole, b [?m] represents a convergence value thereof, t1 [s] represents a time when the maximum value is observed, and t2 [s] represents a time when the displacement amount reaches (a+b)/2 again after the maximum value is observed.Type: ApplicationFiled: June 27, 2017Publication date: January 11, 2018Applicant: KONICA MINOLTA, INC.Inventors: Eiji TABATA, Nofumi MIZUMOTO, Toshiya NATSUHARA, Shigeo UETAKE, Keiko MOMOTANI, Makiko WATANABE
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Publication number: 20180011429Abstract: A transfer belt includes: an elastic layer, wherein the transfer belt is used to transfer a toner image onto a recording medium, the toner image being carried on a first main surface which is one of a pair of main exposed surfaces including the first main surface and a second main surface, when, using a lower block and an upper block, the transfer belt is placed on an upper surface of the lower block, a part of the transfer belt is interposed between a curved convex surface and a curved concave surface, and a pressed region reaches a pressing force of 200 [kPa] and is constantly pressed by the pressing force, if “a” represents a maximum value of displacement of a measurement region, and “b” represents displacement of the measurement region after convergence, E [?] calculated by (a?b)/b satisfies a condition of 0.2?E?3.Type: ApplicationFiled: June 29, 2017Publication date: January 11, 2018Applicant: Konica Minolta, Inc.Inventors: Nofumi MIZUMOTO, Shigeo UETAKE, Keiko MOMOTANI, Eiji TABATA, Makiko WATANABE, Toshiya NATSUHARA
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Publication number: 20170182710Abstract: A three-dimensional fabricated object manufacturing apparatus (1) provided with a fabrication block (20), an information code-forming block (30) and a position code-forming block (40). The fabrication block (20) sequentially stacks fabrication material layer by layer. The information code-forming block (30) forms an information code in which information for identifying the three-dimensional fabricated object is encoded inside the three-dimensional fabricated object that is fabricated by the fabrication block (20). The position code-forming block (40) forms a position code in which information representing the information code formation position in the three-dimensional fabricated object is encoded inside or on the surface of the three-dimensional fabricated object.Type: ApplicationFiled: February 27, 2015Publication date: June 29, 2017Inventors: Masayasu HAGA, Eiji TABATA, Toshiya NATSUHARA, Tomoo IZUMI