Patents by Inventor Yuichiro Hirata

Yuichiro Hirata 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).

  • Patent number: 9256157
    Abstract: A developing apparatus includes a developing container for accommodating a developer; a developer carrying member for carrying the developer to a developing zone for developing a latent image; a developer regulator in contact with the developer carrying member to regulate a developer layer thickness on the developer carrying member; a developer feeding member in contact with the developer carrying member to supply the developer to the developer carrying member; an urging member for urging the developer carrying member toward the developer regulator; and a moving mechanism for moving the developer carrying member in a first direction which is a direction in which the urging member urges the developer carrying member and in a second direction crossing with the first direction. The moving mechanism moves the developer carrying member in the second direction to reduce or remove press-contact forces applied by the developer regulator and the developer feeding member.
    Type: Grant
    Filed: June 26, 2013
    Date of Patent: February 9, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventors: Makoto Tokudome, Daisuke Baba, Yuichiro Hirata, Norihito Naito, Kodai Hayashi, Masao Uyama
  • Patent number: 9213257
    Abstract: A developing device configured to develop a latent image formed on an image bearing member includes a rotatable developing-agent bearing member configured to bear developing agent, a developing container configured to form a developing-agent storage chamber that stores the developing agent, a developing-agent regulating portion provided in the developing container to regulate an amount of the developing agent born on the developing-agent bearing member, a support portion configured to support the developing-agent bearing member movably relative to the developing-agent regulating portion, and a pressurizing member configured to pressurize the developing-agent bearing member toward the developing-agent regulating portion. A contact portion of the developing-agent regulating portion with the developing-agent bearing member is fixed to the developing container without forming a gap from the developing container on a downstream side in a pressurizing direction of the pressurizing member.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: December 15, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Daisuke Baba, Makoto Tokudome, Masao Uyama, Yuichiro Hirata, Kodai Hayashi, Keisuke Mochizuki, Norihito Naito
  • Patent number: 9116456
    Abstract: An image forming apparatus includes an exposure device configured to expose image bearing members charged by charging devices to form latent images on the image bearing members, and a control unit configured to, in ether one or both of an image forming unit A and an image forming unit B, adjust an amount of exposure by which the image bearing member is exposed and a charging voltage based on information about the image bearing members of the image forming units A and B. The control unit is configured to make the charging voltage and the amount of exposure in the image forming unit A different from the charging voltage and the amount of exposure in the image forming unit B.
    Type: Grant
    Filed: October 23, 2013
    Date of Patent: August 25, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akimichi Suzuki, Motoki Adachi, Yusuke Shimizu, Yuichiro Hirata, Naoki Fukushima
  • Patent number: 9116459
    Abstract: An electrophotographic image forming apparatus includes an electrophotographic photosensitive member configured to bear an electrostatic latent image, and a developer carrying member configured to develop the electrostatic latent image. The electrophotographic photosensitive member and the developer carrying member are separated from each other during non-image formation and brought into contact with each other after the electrophotographic photosensitive member and the developer carrying member start to be rotated. During a time period between a time when the electrophotographic photosensitive member and the developer carrying member start to be rotated and a time when the electrophotographic photosensitive member and the developer carrying member are brought into contact with each other, a number of revolutions of the developer feed member is larger than a number of revolutions of the developer carrying member.
    Type: Grant
    Filed: April 16, 2013
    Date of Patent: August 25, 2015
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Shinya Yamamoto, Kodai Hayashi, Hisashi Taniguchi, Yuichiro Hirata
  • Publication number: 20150220016
    Abstract: An image forming apparatus includes an exposure device configured to expose image bearing members charged by charging devices to form latent images on the image bearing members, and a control unit configured to, in ether one or both of an image forming unit A and an image forming unit B, adjust an amount of exposure by which the image bearing member is exposed and a charging voltage based on information about the image bearing members of the image forming units A and B. The control unit is configured to make the charging voltage and the amount of exposure in the image forming unit A different from the charging voltage and the amount of exposure in the image forming unit B.
    Type: Application
    Filed: April 17, 2015
    Publication date: August 6, 2015
    Inventors: Akimichi Suzuki, Motoki Adachi, Yusuke Shimizu, Yuichiro Hirata, Naoki Fukushima
  • Publication number: 20150218998
    Abstract: An exhaust heat recovery control device includes a recovered heat adjusting unit configured to adjust an amount of heat recovered of exhaust gas by an exhaust heat recoverer recovering heat of exhaust gas and a control unit configured to control the recovered heat adjusting unit so as to prevent or suppress freezing in an exhaust pipe based on a traveling history of a vehicle on which the exhaust heat recovery control device is mounted when the freezing in the exhaust pipe is predicted.
    Type: Application
    Filed: January 27, 2015
    Publication date: August 6, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takato ISHIHATA, Yuichiro HIRATA, Toshio MURATA, Nakaya TAKAGAKI, Hideyuki KOMITSU, Yojiro IRIYAMA, Kazutoshi WAKATSUKI
  • Publication number: 20140348556
    Abstract: A developing device configured to develop a latent image formed on an image bearing member includes a rotatable developing-agent bearing member configured to bear developing agent, a developing container configured to form a developing-agent storage chamber that stores the developing agent, a developing-agent regulating portion provided in the developing container to regulate an amount of the developing agent born on the developing-agent bearing member, a support portion configured to support the developing-agent bearing member movably relative to the developing-agent regulating portion, and a pressurizing member configured to pressurize the developing-agent bearing member toward the developing-agent regulating portion. A contact portion of the developing-agent regulating portion with the developing-agent bearing member is fixed to the developing container without forming a gap from the developing container on a downstream side in a pressurizing direction of the pressurizing member.
    Type: Application
    Filed: December 14, 2012
    Publication date: November 27, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Daisuke Baba, Makoto Tokudome, Masao Uyama, Yuichiro Hirata, Kodai Hayashi, Keisuke Mochizuki, Norihito Naito
  • Publication number: 20140351323
    Abstract: A safety evaluation computer evaluates safety of user data which is data of a client computer and relating to storage into a server computer based on a server area ID which is an area ID of an area where the server computer is located, and displays a result of evaluation of the safety.
    Type: Application
    Filed: November 2, 2011
    Publication date: November 27, 2014
    Applicant: HITACHI, LTD.
    Inventors: Tomoyo Sumida, Yuichiro Hirata
  • Publication number: 20140178087
    Abstract: An image forming apparatus includes an exposure device configured to expose image bearing members charged by charging devices to form latent images on the image bearing members, and a control unit configured to, in ether one or both of an image forming unit A and an image forming unit B, adjust an amount of exposure by which the image bearing member is exposed and a charging voltage based on information about the image bearing members of the image forming units A and B. The control unit is configured to make the charging voltage and the amount of exposure in the image forming unit A different from the charging voltage and the amount of exposure in the image forming unit B.
    Type: Application
    Filed: October 23, 2013
    Publication date: June 26, 2014
    Inventors: Akimichi Suzuki, Motoki Adachi, Yusuke Shimizu, Yuichiro Hirata, Naoki Fukushima
  • Publication number: 20140003845
    Abstract: A developing apparatus includes a developing container for accommodating the developer; a sleeve for carrying the developer to developing zone for developing a latent image; a developer regulator contacted to the sleeve to regulate a developer layer thickness on the sleeve; a developer feeding member contacted to the sleeve supply the developer to the sleeve; an urging member for urging the sleeve toward the developer regulator; and a moving mechanism for moving the sleeve in a first direction which is a direction in which the urging member urges the sleeve and in a second direction crossing with the first direction. The moving mechanism moves the sleeve in the second direction to reduce or remove press-contact forces applied by the developer regulator and the developer feeding member.
    Type: Application
    Filed: June 26, 2013
    Publication date: January 2, 2014
    Inventors: Makoto Tokudome, Daisuke Baba, Yuichiro Hirata, Norihito Naito, Kodai Hayashi, Masao Uyama
  • Publication number: 20130287452
    Abstract: In a development device in which a developer containing unit underlies a development chamber, a supplying member in the development chamber forms a nip portion with a developer carrier and the developer carrier and the supplying member rotate in the direction in which their respective surfaces move from an upper end to a lower end of the nip portion.
    Type: Application
    Filed: April 23, 2013
    Publication date: October 31, 2013
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Nobuyoshi Yoshida, Yoshihiro Mitsui, Kodai Hayashi, Yuichiro Hirata, Shinya Yamamoto
  • Publication number: 20130287435
    Abstract: An electrophotographic image forming apparatus, including: an electrophotographic photosensitive member; a developer carrying member configured to carry developer to develop a latent image on the photosensitive member in contact with the photosensitive member; and a developer feed member configured to feed the developer to the carrying member in contact with the carrying member, wherein the photosensitive member and the carrying member are separated from each other during non-image formation and brought into contact with each other after the photosensitive member and the carrying member start to be rotated, and wherein, during a time period between a time when the photosensitive member and the carrying member start to be rotated and a time when the photosensitive member and the carrying member are brought into contact with each other, a number of revolutions of the feed member is larger than a number of revolutions of the carrying member.
    Type: Application
    Filed: April 16, 2013
    Publication date: October 31, 2013
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Shinya Yamamoto, Kodai Hayashi, Hisashi Taniguchi, Yuichiro Hirata
  • Publication number: 20130287451
    Abstract: A developing roller configured to develop an electrostatic latent image on a photosensitive drum, a supply roller configured to supply developer to the developing roller are provided, and the surface of the developing roller moves in the same direction as the surface of the photosensitive drum and at a speed higher than the photosensitive drum at a nip portion between the photosensitive drum and the developing roller, the surface of the supply roller moves in the same direction as the surface of the developing roller and at a speed higher than the developing roller at a nip portion between the developing roller and the supply roller.
    Type: Application
    Filed: April 23, 2013
    Publication date: October 31, 2013
    Inventors: Shinya Yamamoto, Kodai Hayashi, Hisashi Taniguchi, Naoki Fukushima, Yuichiro Hirata, Nobuyoshi Yoshida
  • Patent number: 8494386
    Abstract: An image forming apparatus includes a first drum for bearing an electrostatic latent image and a cleaning blade of a first cleaning device when formation of the toner image to be transferred onto a sheet is not carried out. The control device selects between a toner supply process using the toner accommodated in a first developing device and a toner supply process using the toner accommodated in a second developing device, in accordance with an amount of the toner accommodated in the first developing device or the second developing device.
    Type: Grant
    Filed: December 20, 2010
    Date of Patent: July 23, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yuichiro Hirata
  • Patent number: 8478140
    Abstract: An image forming apparatus includes an image bearing member and a developing device for developing an electrostatic latent image. The developing device includes a developer container, a rotatable developer carrying member, including a first electrode member; and a developer supplying member, including a second electrode member. The apparatus further includes a measuring device capable of measuring a remaining developer amount; and a replenishing device for performing a replenishing operation by rotating the developer supplying member while applying a DC bias between the first and second electrode members so that a value obtained by subtracting an electric potential of the second electrode member from an electric potential of the first electrode member has a polarity identical to a normal charge polarity of the developer. When the remaining developer amount measured is not more than a threshold, the replenishing operation is performed and the remaining developer amount is measured again.
    Type: Grant
    Filed: September 16, 2010
    Date of Patent: July 2, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yuichiro Hirata
  • Patent number: 8137537
    Abstract: The present invention provides a filtered water monitoring device used for detecting damages in a filtration medium installed inside a membrane filtration water clarification device, thereby monitoring degradation of a performance thereof, in order to secure safety of filtered water flowing out from the membrane filtration water clarification device, comprising a branch filtered water pipeline system which is branched from a filtered water pipeline system connected to an outlet of the membrane filtration water clarification device, a filtered water observation plate which is installed in a certain position of the branch filtered water pipeline system, imaging means which takes an image of the filtered water in an observation tank of the filtered water observation plate and outputs image information thereon, and image analyzing means which receives the image information output from the imaging means, and compares the image information with a stored image pattern to identify impurities contained in the filtered
    Type: Grant
    Filed: June 7, 2006
    Date of Patent: March 20, 2012
    Assignees: Hirata Corporation, Kumamoto Prefecture
    Inventors: Yuichiro Hirata, Seigo Murakami, Katsuya Nozaki
  • Publication number: 20110150547
    Abstract: An image forming apparatus includes a first drum for bearing an electrostatic latent image; a first developing device for developing the latent image with toner into a toner image on the first drum; a first cleaning device having a cleaning blade for cleaning the first drum; a second drum; a second developing device for developing the latent image with toner into a toner image on the second drum; a second cleaning device having a cleaning blade for cleaning the second drum; a rotatable member contactable to the first drum and the second drum; wherein the rotatable member is an intermediary transfer member for receiving the toner images from the drums and for transferring it onto a sheet, or a feeding member for feeding a sheet for receiving the toner images; and a control device for controlling a toner supply process for supplying toner into between the first drum and the blade of the first cleaning device when formation of the toner image to be transferred onto the sheet is not carried out, wherein the contr
    Type: Application
    Filed: December 20, 2010
    Publication date: June 23, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Yuichiro Hirata
  • Publication number: 20110085808
    Abstract: An image forming apparatus includes an image bearing member and a developing device for developing an electrostatic latent image. The developing device includes a developer container, a rotatable developer carrying member, including a first electrode member; and a developer supplying member, including a second electrode member. The apparatus further includes a measuring device capable of measuring a remaining developer amount; and a replenishing device for performing a replenishing operation by rotating the developer supplying member while applying a DC bias between the first and second electrode members so that a value obtained by subtracting an electric potential of the second electrode member from an electric potential of the first electrode member has a polarity identical to a normal charge polarity of the developer. When the remaining developer amount measured is not more than a threshold, the replenishing operation is performed and the remaining developer amount is measured again.
    Type: Application
    Filed: September 16, 2010
    Publication date: April 14, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Yuichiro Hirata
  • Patent number: 7664442
    Abstract: A developing apparatus including: a developer carrying member carrying a developer with which an electrostatic image on an image bearing member is developed; a developer supplying/removing member having a conductive member and an insulating member on the surface thereof, and provided apart from the developer carrying member to supply and remove the developer to and from the developer carrying member, and moving directions of the developer carrying member and the developer supplying/removing member being opposed in a developer supplying position; and an electric field producing device producing between the developer carrying member and the developer supplying/removing member an oscillating electric field, in which direct potentials of the conductive member and the developer carrying member are the same, or the direct potential of the conductive member, with respect to the direct potential of the developer carrying member, is on the opposite side to a normal charging polarity of the developer.
    Type: Grant
    Filed: May 21, 2007
    Date of Patent: February 16, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventors: Koichiro Takashima, Yasuyuki Ishii, Yuichiro Hirata, Tomonori Matsunaga
  • Publication number: 20090090663
    Abstract: The present invention provides a filtered water monitoring device used for detecting damages in a filtration medium installed inside a membrane filtration water clarification device, thereby monitoring degradation of a performance thereof, in order to secure safety of filtered water flowing out from the membrane filtration water clarification device, comprising a branch filtered water pipeline system which is branched from a filtered water pipeline system connected to an outlet of the membrane filtration water clarification device, a filtered water observation plate which is installed in a certain position of the branch filtered water pipeline system, imaging means which takes an image of the filtered water in an observation tank of the filtered water observation plate and outputs image information thereon, and image analyzing means which receives the image information output from the imaging means, and compares the image information with a stored image pattern to identify impurities contained in the filtered
    Type: Application
    Filed: June 7, 2006
    Publication date: April 9, 2009
    Inventors: Yuichiro Hirata, Seigo Murakami, Katsuya Nozaki