Patents by Inventor Takashi Narahara
Takashi Narahara 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: 11969841Abstract: A transport system includes a transport path having at least two transporting modules, a carriage configured to move on the transport path, a controller provided on each of the two transporting modules and configured to drive the carriage in response to a drive command, and a sensor provided on each of the two transporting modules. The drive command is corrected with a distance between the sensors provided on the two transporting modules.Type: GrantFiled: October 8, 2021Date of Patent: April 30, 2024Assignee: Canon Kabushiki KaishaInventors: Takashi Nakamura, Hidetada Narahara, Shinichiro Takahama
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Publication number: 20240126198Abstract: An image forming apparatus includes a feed tray, first and second sensors, and a controller. The controller adjusts a sheet interval between the first and second recording materials based on sensor detected length and width of a recording material fed from the feed tray. When a first recording material has a first length and a second recording material has a second length longer than the first length, the controller performs control to increase a sheet interval in response to a first number of recording materials having the second length and conveyed successively. When the first recording material has the first length and the second recording material has a third length shorter than the first length, the controller performs control to reduce the sheet interval in response to a second number of recording materials having the third length and conveyed successively. The second number is greater than the first number.Type: ApplicationFiled: October 9, 2023Publication date: April 18, 2024Inventors: TAKANORI WATANABE, TAKASHI NARAHARA, YUTAKA SATO
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Publication number: 20240067269Abstract: A front side frame has a first deformation promotion portion to bend and deform a front side frame inwardly in a case where a collision load is applied to a vehicle from a vehicle front side, a front vehicle-body structure further comprises a load transmission portion positioned in front of a suspension housing between the front side frame and an apron reinforcement so as to transmit the collision load to the suspension housing, the load transmission portion being provided to connect the front side frame and the apron reinforcement so as to transmit a tensional load applied in a vehicle width direction between the front side frame and the apron reinforcement, and the load transmission portion has a second deformation promotion portion positioned in the vicinity of the first deformation promotion portion and promoting the bending/deforming of the front side frame.Type: ApplicationFiled: February 23, 2023Publication date: February 29, 2024Applicant: MAZDA MOTOR CORPORATIONInventors: Kenta TACHIBANA, Takashi NARAHARA, Yasushi ISHIKAWA
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Patent number: 11815835Abstract: There is used an image forming apparatus including a fixing unit configured to heat a recording material at a fixing nip portion to fix a toner image, and a control unit configured to switch a target temperature, wherein, in the case where the target temperature of preceding recording material is first temperature, the target temperature of subsequent recording material is second temperature which is higher than the first temperature, and a difference between the second temperature and the first temperature has a first value, the control unit performs switching from timing which is earlier than reaching of the second recording material to the fixing nip portion by a predetermined period, and, the higher the target temperature of the preceding recording material, the shorter the predetermined period.Type: GrantFiled: September 27, 2022Date of Patent: November 14, 2023Assignee: CANON KABUSHIKI KAISHAInventors: Takashi Narahara, Ryo Morihara, Yutaka Sato
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Patent number: 11787474Abstract: A rigid suspension tower structure includes a sus-tower for supporting a damper, and a bracket for mounting a component to be secured to the sus-tower. The sus-tower includes a curved side wall portion joined to a front side frame of a vehicle body and extending upward, and a top portion supporting the upper end of the damper. The side wall portion has a pair of mounting portions made of bulging portions. The mounting portions are formed on mutually different sides in a vehicle front-rear direction with a virtual line interposed therebetween, the line being formed by intersecting the side wall portion and a plane that extends parallel to a vehicle width direction and passes through the central axis of the damper. The bracket straddles the line and is secured to the mounting portions.Type: GrantFiled: May 6, 2022Date of Patent: October 17, 2023Assignee: MAZDA MOTOR CORPORATIONInventors: Takashi Narahara, Yusuke Desaki
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Publication number: 20230314989Abstract: Disclosed is an image forming apparatus including: a fixation unit configured to heat a toner image formed corresponding to image data and fix the heated toner image onto a recording material; and a control unit configured to determine a fixation target temperature used by the fixation unit to heat the toner image on the basis of the image data, wherein the control unit performs a first determination to calculate a first target temperature on the basis of image density information in each of a plurality of regions in which the image data is divided in a main-scanning direction and a sub-scanning direction and a second determination to determine whether the image data is a text image, and determines the fixation target temperature on the basis of results of the first determination and the second determination.Type: ApplicationFiled: June 5, 2023Publication date: October 5, 2023Inventors: Takashi Narahara, Ryo Morihara, Yutaka Sato
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Patent number: 11709445Abstract: Disclosed is an image forming apparatus including: a fixation unit configured to heat a toner image formed corresponding to image data and fix the heated toner image onto a recording material; and a control unit configured to determine a fixation target temperature used by the fixation unit to heat the toner image on the basis of the image data, wherein the control unit performs a first determination to calculate a first target temperature on the basis of image density information in each of a plurality of regions in which the image data is divided in a main-scanning direction and a sub-scanning direction and a second determination to determine whether the image data is a text image, and determines the fixation target temperature on the basis of results of the first determination and the second determination.Type: GrantFiled: February 23, 2022Date of Patent: July 25, 2023Assignee: Canon Kabushiki KaishaInventors: Takashi Narahara, Ryo Morihara, Yutaka Sato
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Publication number: 20230102072Abstract: There is used an image forming apparatus including a fixing unit configured to heat a recording material at a fixing nip portion to fix a toner image, and a control unit configured to switch a target temperature, wherein, in the case where the target temperature of preceding recording material is first temperature, the target temperature of subsequent recording material is second temperature which is higher than the first temperature, and a difference between the second temperature and the first temperature has a first value, the control unit performs switching from timing which is earlier than reaching of the second recording material to the fixing nip portion by a predetermined period, and, the higher the target temperature of the preceding recording material, the shorter the predetermined period.Type: ApplicationFiled: September 27, 2022Publication date: March 30, 2023Inventors: Takashi Narahara, Ryo Morihara, Yutaka Sato
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Patent number: 11608017Abstract: A vehicle front body structure is provided for reliably transferring a collision load to a crash can and a front frame by preventing a bumper beam from buckling during a small overlap collision. Bending rigidity of the bumper beam in a vehicle width direction is such that 1) a bending moment generated on the bumper beam when a collision load in a direction toward a vehicle rear side is applied to an extending section, which extends outward in the vehicle width direction from a crash can fixed section, is the highest in a vehicle width direction inner end portion of the crash can fixed section on a side where the collision load is applied, and 2) the bending moment is continuously reduced as a distance from the vehicle width direction inner end portion in the vehicle width direction increases.Type: GrantFiled: June 23, 2021Date of Patent: March 21, 2023Assignee: MAZDA MOTOR CORPORATIONInventors: Takashi Narahara, Nobuyuki Shibutake, Yasushi Ishikawa, Yuichi Morita, Ken Fujimoto, Yusaku Yamaguchi
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Patent number: 11548558Abstract: A front vehicle-body structure comprises a crash can fixed to a front end of a front frame. The crash can comprises an upper face portion, a lower face portion, a pair of side face portions, corner portions respectively positioned between the side face portion and the upper face portion and between the side face portion and the lower face portion, a first fragile portion provided at each of the corner portions, and a second fragile portion provided at each of the side face portions. The first fragile portion is configured to be deformed before the second fragile portion when a collision load applied toward a vehicle rearward side is inputted to an extension portion of a bumper beam. The second fragile portion is configured to be deformed before the front frame when the collision load applied toward the vehicle rearward side is inputted to the extension portion.Type: GrantFiled: April 15, 2021Date of Patent: January 10, 2023Assignee: MAZDA MOTOR CORPORATIONInventors: Takashi Narahara, Nobuyuki Shibutake, Yasushi Ishikawa, Yuichi Morita
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Publication number: 20220388573Abstract: A rigid suspension tower structure includes a sus-tower for supporting a damper, and a bracket for mounting a component to be secured to the sus-tower. The sus-tower includes a curved side wall portion joined to a front side frame of a vehicle body and extending upward, and a top portion supporting the upper end of the damper. The side wall portion has a pair of mounting portions made of bulging portions. The mounting portions are formed on mutually different sides in a vehicle front-rear direction with a virtual line interposed therebetween, the line being formed by intersecting the side wall portion and a plane that extends parallel to a vehicle width direction and passes through the central axis of the damper. The bracket straddles the line and is secured to the mounting portions.Type: ApplicationFiled: May 6, 2022Publication date: December 8, 2022Applicant: MAZDA MOTOR CORPORATIONInventors: Takashi NARAHARA, Yusuke DESAKI
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Publication number: 20220269198Abstract: Disclosed is an image forming apparatus including: a fixation unit configured to heat a toner image formed corresponding to image data and fix the heated toner image onto a recording material; and a control unit configured to determine a fixation target temperature used by the fixation unit to heat the toner image on the basis of the image data, wherein the control unit performs a first determination to calculate a first target temperature on the basis of image density information in each of a plurality of regions in which the image data is divided in a main-scanning direction and a sub-scanning direction and a second determination to determine whether the image data is a text image, and determines the fixation target temperature on the basis of results of the first determination and the second determination.Type: ApplicationFiled: February 23, 2022Publication date: August 25, 2022Inventors: Takashi Narahara, Ryo Morihara, Yutaka Sato
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Publication number: 20220001927Abstract: A front vehicle-body structure comprises a crash can fixed to a front end of a front frame. The crash can comprises an upper face portion, a lower face portion, a pair of side face portions, corner portions respectively positioned between the side face portion and the upper face portion and between the side face portion and the lower face portion, a first fragile portion provided at each of the corner portions, and a second fragile portion provided at each of the side face portions. The first fragile portion is configured to be deformed before the second fragile portion when a collision load applied toward a vehicle rearward side is inputted to an extension portion of a bumper beam. The second fragile portion is configured to be deformed before the front frame when the collision load applied toward the vehicle rearward side is inputted to the extension portion.Type: ApplicationFiled: April 15, 2021Publication date: January 6, 2022Applicant: MAZDA MOTOR CORPORATIONInventors: Takashi NARAHARA, Nobuyuki SHIBUTAKE, Yasushi ISHIKAWA, Yuichi MORITA
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Publication number: 20220001819Abstract: A vehicle front body structure is provided for reliably transferring a collision load to a crash can and a front frame by preventing a bumper beam from buckling during a small overlap collision. Bending rigidity of the bumper beam in a vehicle width direction is such that 1) a bending moment generated on the bumper beam when a collision load in a direction toward a vehicle rear side is applied to an extending section, which extends outward in the vehicle width direction from a crash can fixed section, is the highest in a vehicle width direction inner end portion of the crash can fixed section on a side where the collision load is applied, and 2) the bending moment is continuously reduced as a distance from the vehicle width direction inner end portion in the vehicle width direction increases.Type: ApplicationFiled: June 23, 2021Publication date: January 6, 2022Applicant: MAZDA MOTOR CORPORATIONInventors: Takashi NARAHARA, Nobuyuki SHIBUTAKE, Yasushi ISHIKAWA, Yuichi MORITA, Ken FUJIMOTO, Yusaku YAMAGUCHI
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Patent number: 10852677Abstract: A fixing member used for a fixing device includes a tubular base layer; an electrode portion formed on the base layer; a heat generating portion formed on the base layer in such a manner as to be positioned next to the electrode portion in a longitudinal direction of the fixing member, the heat generating portion being electrically connected to the electrode portion; and an overcoat layer formed on the heat generating portion. The heat generating portion is a layer formed by a plurality of thin linear layers extending in the longitudinal direction of the fixing member and spaced from one another along a circumferential direction of the fixing member. The overcoat layer extends over a boundary between the heat generating portion and the electrode portion in the longitudinal direction of the fixing member.Type: GrantFiled: November 27, 2018Date of Patent: December 1, 2020Assignee: Canon Kabushiki KaishaInventors: Yutaka Sato, Takashi Narahara, Takeshi Shinji, Kazuhiro Doda, Kohei Wakatsu
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Patent number: 10564579Abstract: A fixing apparatus for fixing a toner image to a recording material includes a cylindrical film, a heater configured to make contact with the film, the heater including a substrate and a heat generation resistor formed on the substrate, and a heat conduction member configured to make contact with a surface of the heater opposite to a surface thereof being in contact with the film, the heat conduction member having a higher thermal conductivity than that of the substrate, and being divided into parts in a generatrix direction of the film. The toner image formed on the recording material is fixed on the recording material by using heat of the film, and one of the parts of the heat conduction member is configured to make contact with the heater continuously from a center to an end of a heat generation region of the heater in the generatrix direction.Type: GrantFiled: September 5, 2018Date of Patent: February 18, 2020Assignee: Canon Kabushiki KaishaInventors: Kenichi Ogawa, Takashi Narahara, Toru Imaizumi, Yasuhito Minamishima, Tsuguhiro Yoshida, Masashi Tanaka, Kensuke Umeda
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Patent number: 10558153Abstract: A fixing device includes a cylindrical film including a heat generating layer, a first temperature detecting member contacting the film, and a second temperature detecting member contacting the film and provided at such a position that a temperature change at the position, at which the second temperature detecting member is provided, is slower in responsiveness than at a position at which the first temperature detecting member is provided. A controller stops supply of electrical power to the film depending on a difference between a detection temperature value output by the first temperature detecting member, and a detection temperature value output by the second temperature detecting member. In addition, a toner image, formed on a recording material, is heated by heat from the film and is fixed on the recording material.Type: GrantFiled: September 8, 2017Date of Patent: February 11, 2020Assignee: Canon Kabushiki KaishaInventors: Kohei Wakatsu, Takashi Narahara, Takeshi Shinji, Toru Imaizumi, Kazuhiro Doda
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Patent number: 10526020Abstract: A side body structure of a vehicle is provided, which includes a hinge pillar extending in vertical directions of the vehicle, a hinge reinforcement disposed in the hinge pillar, and a reinforcing member disposed in the hinge pillar and extending in the vertical directions. The hinge reinforcement is provided with an overlapping section provided on a rear side of a portion of the reinforcing member and overlapping in the vertical directions with the portion when viewed from a vehicle front side.Type: GrantFiled: April 18, 2017Date of Patent: January 7, 2020Assignee: Mazda Motor CorporationInventors: Takashi Narahara, Shuichi Nakagami, Hiroshi Matsubara, Katsuhisa Miyoshi
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Patent number: 10503105Abstract: A tubular film used for a fixing apparatus includes a heat generating layer, and a first conductive layer and a second conductive layer respectively provided at one end and another end of the film in a longitudinal direction of the film so as to contact the heat generating layer. The first conductive layer and the second conductive layer each has a volume resistivity that is less than that of the heat generating layer. A low resistance layer is formed in an area of the heat generating layer between the first conductive layer and the second conductive layer in the longitudinal direction, so as not to contact the first conductive layer and the second conductive layer. The low resistance layer has a volume resistivity that is less than that of the heat generating layer, and extends in a circumferential direction of the heat generating layer.Type: GrantFiled: January 11, 2019Date of Patent: December 10, 2019Assignee: Canon Kabushiki KaishaInventors: Toru Imaizumi, Ken Nakagawa, Takashi Narahara, Takeshi Shinji, Kazuhiro Doda, Kohei Wakatsu
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Patent number: 10474074Abstract: A film for use in a fixing device includes a base layer having a cylindrical shape. An electrode portion is formed at an end part of the base layer in a longitudinal direction of the film. A heat generation portion is formed at a central part of the base layer in the longitudinal direction of the film and electrically connected to the electrode portion. The heat generation portion is formed of a conductive layer made of a same material as a material of the electrode portion. A thickness of the conductive layer is larger in the electrode portion than in the heat generation portion. A surface area of the conductive layer per unit length in the longitudinal direction of the film is larger in the electrode portion than in the heat generation portion.Type: GrantFiled: January 3, 2019Date of Patent: November 12, 2019Assignee: Canon Kabushiki KaishaInventors: Takeshi Shinji, Takashi Narahara, Kazuhiro Doda, Yutaka Sato, Kohei Wakatsu