Patents by Inventor Takahiro Miyakawa
Takahiro Miyakawa 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: 10811870Abstract: An electric wire protection device includes a voltage adjusting unit that adjusts voltage of a power source side and supplies the resulting voltage to a load, and a controller that includes a calculation unit configured to compute temperature information of an electric wire connecting the power source and the load from a value of an electric current flowing through the voltage adjusting unit, and that is configured to make the voltage adjusting unit into a shutoff state of shutting off the power source and the load on the basis of the temperature information.Type: GrantFiled: March 9, 2018Date of Patent: October 20, 2020Assignees: YAZAKI CORPORATION, HONDA MOTOR CO., LTD.Inventors: Takashi Kikuchi, Takahiro Miyakawa, Syunsuke Nagakura, Keisuke Ueta, Tomoya Nishino, Noboru Ujigawa, Seiju Kawamata, Masataka Tsukioka, Rikuya Ezoe
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Patent number: 10769507Abstract: An image forming apparatus includes a conveyor, a sensor, and control circuitry. The conveyor is configured to convey a sheet. The sensor is configured to detect the sheet conveyed by the conveyor. The control circuitry is configured to cause the conveyor to eject the sheet without stopping conveyance of the sheet and prohibit recovery printing when a size of the sheet determined based on detection of the sheet by the sensor is different from a setting size in a first operation mode. The control circuitry is configured to cause the conveyor to stop conveyance of the sheet and allow recovery printing when the size of the sheet is different from the setting size in a second operation mode in which a number of times of printing is larger than a number of times of printing in the first operation mode.Type: GrantFiled: August 23, 2019Date of Patent: September 8, 2020Assignee: Ricoh Company, Ltd.Inventors: Tetsuya Ogawa, Takahiro Miyakawa
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Patent number: 10718821Abstract: A power supply device includes a voltage adjusting unit, an A/D converter, a determination unit, and a supply unit configured to supply a voltage. The A/D converter includes an A/D conversion circuit, and a selector that connects any one of a plurality of input ports to the A/D conversion circuit. The input ports include load ports, a first diagnostic port, and a second diagnostic port, the supply unit supplies a first voltage value to the first diagnostic port and supplies a second voltage value to the second diagnostic port, and the determination unit determines abnormality of the A/D converter on the basis of conversion results by the A/D conversion circuit when the first diagnostic port and the A/D conversion circuit are connected together and conversion results by the A/D conversion circuit when the second diagnostic port and the A/D conversion circuit are connected together.Type: GrantFiled: January 26, 2018Date of Patent: July 21, 2020Assignee: YAZAKI CORPORATIONInventors: Hiroshi Tokinoya, Takashi Kikuchi, Takahiro Miyakawa, Syunsuke Nagakura
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Patent number: 10707676Abstract: An electric wire protection device includes a voltage adjuster that adjusts voltage on a power source side to be supplied to a load and a controller that includes a temperature calculation part which calculates temperature information of an electric wire based on a current value flowing through the voltage adjuster. The controller sets a first time constant as a time constant used to calculate the temperature information while the voltage adjuster is in the interrupted state, and sets a second time constant as a time constant used to calculate the temperature information while the voltage adjuster supplies power to the load. The first time constant is a value larger than the second time constant and equal to or larger than an actual time constant of the electric wire, and the second time constant is a value smaller than the actual time constant of the electric wire.Type: GrantFiled: March 5, 2018Date of Patent: July 7, 2020Assignees: YAZAKI CORPORATION, HONDA MOTOR CO., LTD.Inventors: Takashi Kikuchi, Keisuke Ueta, Syunsuke Nagakura, Takahiro Miyakawa, Tomoya Nishino, Noboru Ujigawa, Seiju Kawamata, Masataka Tsukioka, Rikuya Ezoe
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Patent number: 10707675Abstract: An electric-wire protection device includes a voltage adjustment unit that adjusts the voltage to a load, and a controller that includes a temperature calculation unit that calculates temperature information on an electric wire from a value of current, and makes the voltage adjustment unit into a shut-off state based on the temperature information. The temperature information is calculated from an amount of temperature changes based on the current value and a predetermined initial value. The controller shifts into a sleep state when a sleep condition is satisfied that includes a condition that the temperature information is lower than the initial value. The initial value when the controller returns from the sleep state is based on a convergence value of temperature in conducting energization on the electric wire at a maximum value of steady-state current.Type: GrantFiled: March 5, 2018Date of Patent: July 7, 2020Assignees: YAZAKI CORPORATION, HONDA MOTOR CO., LTD.Inventors: Takashi Kikuchi, Keisuke Ueta, Syunsuke Nagakura, Takahiro Miyakawa, Tomoya Nishino, Noboru Ujigawa, Seiju Kawamata, Masataka Tsukioka, Rikuya Ezoe
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Publication number: 20200074252Abstract: An image forming apparatus includes a conveyor, a sensor, and control circuitry. The conveyor is configured to convey a sheet. The sensor is configured to detect the sheet conveyed by the conveyor. The control circuitry is configured to cause the conveyor to eject the sheet without stopping conveyance of the sheet and prohibit recovery printing when a size of the sheet determined based on detection of the sheet by the sensor is different from a setting size in a first operation mode. The control circuitry is configured to cause the conveyor to stop conveyance of the sheet and allow recovery printing when the size of the sheet is different from the setting size in a second operation mode in which a number of times of printing is larger than a number of times of printing in the first operation mode.Type: ApplicationFiled: August 23, 2019Publication date: March 5, 2020Applicant: Ricoh Company, Ltd.Inventors: TETSUYA OGAWA, TAKAHIRO MIYAKAWA
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Publication number: 20180261996Abstract: An electric-wire protection device includes a voltage adjustment unit that adjusts the voltage to a load, and a controller that includes a temperature calculation unit that calculates temperature information on an electric wire from a value of current, and makes the voltage adjustment unit into a shut-off state based on the temperature information. The temperature information is calculated from an amount of temperature changes based on the current value and a predetermined initial value. The controller shifts into a sleep state when a sleep condition is satisfied that includes a condition that the temperature information is lower than the initial value. The initial value when the controller returns from the sleep state is based on a convergence value of temperature in conducting energization on the electric wire at a maximum value of steady-state current.Type: ApplicationFiled: March 5, 2018Publication date: September 13, 2018Applicants: Yazaki Corporation, HONDA MOTOR CO., LTD.Inventors: Takashi KIKUCHI, Keisuke UETA, Syunsuke NAGAKURA, Takahiro MIYAKAWA, Tomoya NISHINO, Noboru UJIGAWA, Seiju KAWAMATA, Masataka TSUKIOKA, Rikuya EZOE
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Publication number: 20180262001Abstract: An electric wire protection device includes a voltage adjusting unit that adjusts voltage of a power source side and supplies the resulting voltage to a load, and a controller that includes a calculation unit configured to compute temperature information of an electric wire connecting the power source and the load from a value of an electric current flowing through the voltage adjusting unit, and that is configured to make the voltage adjusting unit into a shutoff state of shutting off the power source and the load on the basis of the temperature information.Type: ApplicationFiled: March 9, 2018Publication date: September 13, 2018Applicants: YAZAKI CORPORATION, HONDA MOTOR CO., LTD.Inventors: Takashi KIKUCHI, Takahiro MIYAKAWA, Syunsuke NAGAKURA, Keisuke UETA, Tomoya NISHINO, Noboru UJIGAWA, Seiju KAWAMATA, Masataka TSUKIOKA, Rikuya EZOE
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Publication number: 20180261998Abstract: An electric wire protection device includes a voltage adjuster that adjusts voltage on a power source side to be supplied to a load and a controller that includes a temperature calculation part which calculates temperature information of an electric wire based on a current value flowing through the voltage adjuster. The controller sets a first time constant as a time constant used to calculate the temperature information while the voltage adjuster is in the interrupted state, and sets a second time constant as a time constant used to calculate the temperature information while the voltage adjuster supplies power to the load. The first time constant is a value larger than the second time constant and equal to or larger than an actual time constant of the electric wire, and the second time constant is a value smaller than the actual time constant of the electric wire.Type: ApplicationFiled: March 5, 2018Publication date: September 13, 2018Applicants: Yazaki Corporation, HONDA MOTOR CO., LTD.Inventors: Takashi KIKUCHI, Keisuke UETA, Syunsuke NAGAKURA, Takahiro MIYAKAWA, Tomoya NISHINO, Noboru UJIGAWA, Seiju KAWAMATA, Masataka TSUKIOKA, Rikuya EZOE
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Publication number: 20180231617Abstract: A power supply device includes a voltage adjusting unit, an A/D converter, a determination unit, and a supply unit configured to supply a voltage. The A/D converter includes an A/D conversion circuit, and a selector that connects any one of a plurality of input ports to the A/D conversion circuit. The input ports include load ports, a first diagnostic port, and a second diagnostic port, the supply unit supplies a first voltage value to the first diagnostic port and supplies a second voltage value to the second diagnostic port, and the determination unit determines abnormality of the A/D converter on the basis of conversion results by the A/D conversion circuit when the first diagnostic port and the A/D conversion circuit are connected together and conversion results by the A/D conversion circuit when the second diagnostic port and the A/D conversion circuit are connected together.Type: ApplicationFiled: January 26, 2018Publication date: August 16, 2018Applicant: Yazaki CorporationInventors: Hiroshi TOKINOYA, Takashi KIKUCHI, Takahiro MIYAKAWA, Syunsuke NAGAKURA
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Patent number: 9632458Abstract: A developing device includes a developer agitation portion including a plurality of trap agitation blades arranged in an axis direction of the developer agitation portion. A plurality of agitation blade portions is arranged with being shifted from one another in a circumferential direction and a longitudinal direction of the developer agitation portion. Two adjacent trap agitation blades constituting the agitation blade portion are arranged at an angle so as to make a space between the two adjacent trap agitation blades gradually wider upstream with respect to a rotation direction of the developer agitation portion.Type: GrantFiled: October 5, 2015Date of Patent: April 25, 2017Assignee: Canon Kabushiki KaishaInventors: Fumiaki Nakamura, Takahiro Miyakawa
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Patent number: 9346422Abstract: An electrical junction box includes a bolt fixation portion made of resin, the bolt fixation portion having a bolt insertion hole through which a bolt is inserted to fix the electrical junction box to a vehicle. The bolt fixation portion includes a protrusion extending in an axial direction of the bolt in a state in which the bolt is inserted through the bolt insertion hole. The protrusion is configured to limit a rotationally movable range of an operating portion of a tool that is used in a state in which the operating portion extends in a direction intersecting the axial direction of the bolt.Type: GrantFiled: May 27, 2015Date of Patent: May 24, 2016Assignee: YAZAKI CORPORATIONInventors: Katsuhisa Kouzaki, Takanori Kitajo, Takahiro Miyakawa, Toshihide Asano, Kenya Sakurai, Takaaki Ito, Toshio Aikawa, Tetsuya Goto
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Publication number: 20160097992Abstract: A developing device includes a developer agitation portion including a plurality of trap agitation blades arranged in an axis direction of the developer agitation portion. A plurality of agitation blade portions is arranged with being shifted from one another in a circumferential direction and a longitudinal direction of the developer agitation portion. Two adjacent trap agitation blades constituting the agitation blade portion are arranged at an angle so as to make a space between the two adjacent trap agitation blades gradually wider upstream with respect to a rotation direction of the developer agitation portion.Type: ApplicationFiled: October 5, 2015Publication date: April 7, 2016Inventors: Fumiaki Nakamura, Takahiro Miyakawa
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Publication number: 20150349503Abstract: An electrical junction box includes a bolt fixation portion made of resin, the bolt fixation portion having a bolt insertion hole through which a bolt is inserted to fix the electrical junction box to a vehicle. The bolt fixation portion includes a protrusion extending in an axial direction of the bolt in a state in which the bolt is inserted through the bolt insertion hole. The protrusion is configured to limit a rotationally movable range of an operating portion of a tool that is used in a state in which the operating portion extends in a direction intersecting the axial direction of the bolt.Type: ApplicationFiled: May 27, 2015Publication date: December 3, 2015Applicant: Yazaki CorporationInventors: Katsuhisa KOUZAKI, Takanori KITAJO, Takahiro MIYAKAWA, Toshihide ASANO, Kenya SAKURAI, Takaaki ITO, Toshio AIKAWA, Tetsuya GOTO
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Patent number: 8976370Abstract: An measuring apparatus includes: a storage unit configured to store a relationship, regarding an irradiation condition predetermined based on a correlation between a characteristic of each of beams of reflected light obtained from a plurality of patterns different from one another in a thickness of a residual layer in a recessed portion and the thickness of the residual layer of each of the plurality of patterns, between the characteristic of the reflected light from each pattern and the thickness of the residual layer of the pattern; and a processing unit configured to, based on a characteristic of reflected light from a pattern formed on a substrate irradiated with light under the irradiation condition and the relationship stored in the storage unit, obtain a thickness of a residual layer in a recessed portion of the pattern formed on the substrate.Type: GrantFiled: November 21, 2013Date of Patent: March 10, 2015Assignee: Canon Kabushiki KaishaInventors: Takahiro Miyakawa, Kazuhiro Sato, Ken Minoda, Hideki Ina
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Patent number: 8820734Abstract: A loading device includes a disposing unit to dispose the recording media, and a detector to detect the disposed recording media. The disposing unit includes a loading member on which the recording media are loaded, a pair of guide members movable in width directions of the recording media that are mounted on the loading member, and a guide driver to move the guide members. The end detector detects positions at which the guide members are in contact with the recording media as the ends of the recording media. The guide driver further moves the guide members in the width direction to cause the recording media to form flexures, subsequently moves the guide members to separate from the recording media, and then moves the guide members to be in contact with the recording media again.Type: GrantFiled: June 18, 2013Date of Patent: September 2, 2014Assignee: Ricoh Company, Ltd.Inventors: Takahiro Miyakawa, Koichi Suse, Shingo Hayashi, Osamu Kizaki
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Publication number: 20140153003Abstract: An measuring apparatus includes: a storage unit configured to store a relationship, regarding an irradiation condition predetermined based on a correlation between a characteristic of each of beams of reflected light obtained from a plurality of patterns different from one another in a thickness of a residual layer in a recessed portion and the thickness of the residual layer of each of the plurality of patterns, between the characteristic of the reflected light from each pattern and the thickness of the residual layer of the pattern; and a processing unit configured to, based on a characteristic of reflected light from a pattern formed on a substrate irradiated with light under the irradiation condition and the relationship stored in the storage unit, obtain a thickness of a residual layer in a recessed portion of the pattern formed on the substrate.Type: ApplicationFiled: November 21, 2013Publication date: June 5, 2014Inventors: Takahiro Miyakawa, Kazuhiro Sato, Ken Minoda, Hideki Ina
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Publication number: 20130341854Abstract: A loading device includes a disposing unit to dispose the recording media, and a detector to detect the disposed recording media. The disposing unit includes a loading member on which the recording media are loaded, a pair of guide members movable in width directions of the recording media that are mounted on the loading member, and a guide driver to move the guide members. The end detector detects positions at which the guide members are in contact with the recording media as the ends of the recording media. The guide driver further moves the guide members in the width direction to cause the recording media to form flexures, subsequently moves the guide members to separate from the recording media, and then moves the guide members to be in contact with the recording media again.Type: ApplicationFiled: June 18, 2013Publication date: December 26, 2013Applicant: RICOH COMPANY, LTD.Inventors: Takahiro MIYAKAWA, Koichi SUSE, Shingo HAYASHI, Osamu KIZAKI
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Patent number: 8446597Abstract: An image forming apparatus includes a direct-transfer control unit that causes a direct-transfer medium and a first image forming unit that forms a single-color image to transfer the single-color image onto either the direct-transfer medium or a transfer sheet; an indirect-transfer control unit that causes an intermediate transfer medium and a second image forming unit that forms a multi-color image to transfer the multi-color image onto the intermediate transfer medium; a secondary-transfer control unit that transfers the single-color image onto the intermediate transfer medium; a sensor that detects an image on the intermediate transfer medium; and a positional-alignment control unit that calculates, using the sensor, an amount of misalignment of the image and corrects, using a position of an image formed by the first image forming unit as a reference position, positions of images to be formed by the second image forming unit based on the calculated amount of misalignment.Type: GrantFiled: May 26, 2010Date of Patent: May 21, 2013Assignee: Ricoh Company, LimitedInventors: Takashi Enami, Takahiro Kamekura, Nobuyuki Kobayashi, Shigeyuki Ishii, Jun Kosako, Natsuko Kawase, Takahiro Miyakawa, Miyo Taniguchi
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Patent number: 8437671Abstract: An image forming apparatus includes a first image forming unit that directly transfers an image onto a transfer sheet; an intermediate transfer member onto which an image is transferred; a secondary image forming unit that transfers an image onto the intermediate transfer member; a secondary transfer unit that transfers the image on the intermediate transfer member onto the transfer sheet; a fixing unit that fixes an image on the transfer sheet at a fixation position; and a guide member that guides the transfer sheet to the fixation position.Type: GrantFiled: May 21, 2010Date of Patent: May 7, 2013Assignee: Ricoh Company, LimitedInventors: Takahiro Miyakawa, Shigeyuki Ishii, Jun Kosako, Takashi Enami, Nobuyuki Kobayashi, Natsuko Kawase, Takahiro Kamekura, Miyo Taniguchi