Patents by Inventor Toshiyuki Yamada

Toshiyuki Yamada 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: 10761460
    Abstract: An image forming apparatus includes an image bearing member, a transfer member, a voltage source, a sensor, an acquiring portion, an information storing portion, and a controller configured to adjust the voltage applied to the transfer member. During continuous image formation for continuously forming images on a plurality of recording materials, a detection result of the sensor is corrected on the basis of the detection result of the sensor in a detection period in which a current recording material passes through a transfer portion, an index value relating to a toner image transferred onto a detection region passing through the transfer portion in the detecting period, and correction information, and then on the basis of the corrected value of the detection result, the controller controls the voltage applied to the transfer member for a subsequent recording material passing through the transfer portion.
    Type: Grant
    Filed: September 13, 2019
    Date of Patent: September 1, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventor: Toshiyuki Yamada
  • Patent number: 10670999
    Abstract: An image forming apparatus includes an image transfer belt; a first transfer member; a second transfer member opposed to the first transfer member with the belt therebetween; an applying device for applying a voltage to at least one of the first and second transfer members; and a controller for controlling the applying device to apply to the at least one transfer member a voltage having the same polarity as a regular polarity of toner and a voltage of the opposite polarity to the first transfer member in a cleaning operation. The controller changes a number of image formations to be carried out from a cleaning operation to a next cleaning operation depending on the kind of the sheet. The number controlled by the controller is different depending on the kind of the sheets in a continuous printing job.
    Type: Grant
    Filed: November 2, 2018
    Date of Patent: June 2, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventor: Toshiyuki Yamada
  • Publication number: 20200089146
    Abstract: An image forming apparatus includes an image bearing member, a transfer member, a voltage source, a sensor, an acquiring portion, an information storing portion, and a controller configured to adjust the voltage applied to the transfer member. During continuous image formation for continuously forming images on a plurality of recording materials, the detection result is corrected on the basis of the detection result of the sensor in a detection period in which a current recording material passes through the transfer portion, the index value relating to the toner image transferred onto a detection region passing through the transfer portion in the detecting period, and the correction information, and then on the basis of the corrected value of the detection result, the controller controls the voltage applied to the transfer member for a subsequent recording material passing through the transfer portion.
    Type: Application
    Filed: September 13, 2019
    Publication date: March 19, 2020
    Inventor: Toshiyuki Yamada
  • Publication number: 20200072707
    Abstract: A management monitoring system includes a real-time detection device configured to detect a state of target equipment and an instruction output from a central control device configured to input a control instruction to the target equipment; and a management monitoring device configured to acquire information from the real-time detection device. The management monitoring device includes an analysis unit configured to simulate the state of the target equipment, with models of the target equipment and the central control device, and a determination unit configured to determine whether an abnormality has occurred in the target equipment. The analysis unit simulates the state of the target equipment, using the latest information detected by the real-time detection device. The determination unit compares a result calculated by the analysis unit using the latest information with the latest information detected by the real-time detection device for the determination.
    Type: Application
    Filed: March 23, 2018
    Publication date: March 5, 2020
    Inventors: Naoki KUSABA, Toshiyuki YAMADA, Yoshinori KAMIYA, Nobukazu NAITO, Naoki YAMASAKI
  • Publication number: 20200050133
    Abstract: An image forming apparatus includes an image bearing member, a transfer member, a voltage source, a current detecting portion, a controller, and a receiving portion. During the recording material being passing through the transfer portion, the controller controls a voltage applied to a transfer member on the basis of a detection result of the current detecting portion so that a current flowing through the transfer member falls within a predetermined range. The controller sets at least one of an upper limit and a lower limit of the predetermined range on the basis of a predetermined voltage changing instruction received by the receiving portion.
    Type: Application
    Filed: July 31, 2019
    Publication date: February 13, 2020
    Inventors: Tetsuya Ohta, Yutaka Kakehi, Toshiyuki Yamada
  • Publication number: 20190294794
    Abstract: An intrusion prevention device includes a reception unit, a monitoring unit, and a determination unit. The reception unit receives, from a control target device, a notification indicating a state of the control target device. The monitoring unit receives a control command transmitted from a control device to the control target device. The determination unit determines whether to permit or block passage of the control command received by the monitoring unit in accordance with the state of the control target device received by the reception unit.
    Type: Application
    Filed: September 26, 2017
    Publication date: September 26, 2019
    Applicants: NIPPON TELEGRAPH AND TELEPHONE CORPORATION, MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Keiichi OKABE, Takaaki KOYAMA, Jun MIYOSHI, Yoshihiro ITOH, Naohiko YOSHIZUMI, Tetsuo TAKAHASHI, Yuki MORI, Toshiyuki YAMADA, Naoki YAMASAKI
  • Patent number: 10416593
    Abstract: A developing device includes a developing container, a developing sleeve, a magnet and grooves provided at a surface of the sleeve and formed along a direction crossing a circumferential direction of the sleeve. In a cross-section, each of the grooves is formed by a flat bottom portion contacting a carrier particle and a pair of side surface portions provided in both sides of the flat bottom portion with respect to the circumferential direction of the sleeve and satisfies the following relationship: r<w<2r, 2×r<L, and r/2?s<2r. In the above, r is a volume-average particle size of the carrier particles, w is a length of the flat bottom portion, L is a width between the side surface portions at the surface of the sleeve, and s is a depth of each of the grooves.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: September 17, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yusuke Ishida, Takanori Iida, Yasushi Takeuchi, Toshiyuki Yamada, Shiro Higashikozono, Hiroto Kakinuma, Toshiya Kobayashi
  • Publication number: 20190129333
    Abstract: An image forming apparatus includes an image transfer belt; a first transfer member; a second transfer member opposed to the first transfer member with the belt therebetween to; an applying device for applying a voltage at least one of the first and second transfer members; and a controller for controlling the applying device to apply to the at least one transfer member a voltage having the same polarity as a regular polarity of toner and a voltage of the opposite a first transfer member cleaning operation. The controller changes a number of image formations to be carried out from a cleaning operation to a next cleaning operation depending on the kind of the sheet. The number controlled by the controller is different depending on the kind of the sheets in a continuous printing job.
    Type: Application
    Filed: November 2, 2018
    Publication date: May 2, 2019
    Inventor: Toshiyuki Yamada
  • Patent number: 9897940
    Abstract: In the present invention, an image forming apparatus using a method of replacing a developer is configured such that an immobile area in which the heights of a discharge passage and a conveyance passage are changed on the upstream side of a returning screw is filled. This causes the immobile area of the developer to be unlikely to occur and accordingly suppresses formation of a toner stain image due to an aggregation toner, enabling stable image formation over a long period of time.
    Type: Grant
    Filed: August 29, 2016
    Date of Patent: February 20, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takanori Iida, Yusuke Ishida, Yasushi Takeuchi, Toshiyuki Yamada
  • Patent number: 9851670
    Abstract: When ending image forming, a state is realized where charging by a charging roller is stopped (charging bias off) and also applying DC voltage at a developing device is stopped (developing bias DC off). In this state, AC voltage is applied to the developing device (developing bias AC on), thereby adhering toner to the surface of a photosensitive drum and forming interposing toner. Driving of the photosensitive drum and an intermediate transfer belt is then stopped in the state with the interposing toner interposed between the photosensitive drum and intermediate transfer belt.
    Type: Grant
    Filed: August 23, 2016
    Date of Patent: December 26, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yasushi Takeuchi, Takayuki Ganko, Koji Arimura, Yusuke Ishida, Takanori Iida, Toshiyuki Yamada, Daisuke Makino, Taisuke Matsuura
  • Publication number: 20170299984
    Abstract: A developing device includes a developing container, a developing sleeve, a magnet and grooves provided at a surface of the sleeve and formed along a direction crossing a circumferential direction of the sleeve. In a cross-section, each of the grooves is formed by a flat bottom portion contacting a carrier particle and a pair of side surface portions provided in both sides of the flat bottom portion with respect to the circumferential direction of the sleeve and satisfies the following relationship: r<w<2r, 2×r<L, and r/2?s<2r. In the above, r is a volume-average particle size of the carrier particles, w is a length of the flat bottom portion, L is a width between the side surface portions at the surface of the sleeve, and s is a depth of each of the grooves.
    Type: Application
    Filed: June 28, 2017
    Publication date: October 19, 2017
    Inventors: Yusuke Ishida, Takanori Iida, Yasushi Takeuchi, Toshiyuki Yamada, Shiro Higashikozono, Hiroto Kakinuma, Toshiya Kobayashi
  • Patent number: 9733594
    Abstract: A developing device includes a developing container, a developing sleeve, a magnet and grooves provided at a surface of the sleeve and formed along a direction crossing a circumferential direction of the sleeve. In a cross-section, each of the grooves is formed by a flat bottom portion contacting a carrier particle and a pair of side surface portions provided in both sides of the flat bottom portion with respect to the circumferential direction of the sleeve and satisfies the following relationship: r<w<2r, 2×r<L, and r/2?s<2r. In the above, r is a volume-average particle size of the carrier particles, w is a length of the flat bottom portion, L is a width between the side surface portions at the surface of the sleeve, and s is a depth of each of the grooves.
    Type: Grant
    Filed: August 9, 2016
    Date of Patent: August 15, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yusuke Ishida, Takanori Iida, Yasushi Takeuchi, Toshiyuki Yamada, Shiro Higashikozono, Hiroto Kakinuma, Toshiya Kobayashi
  • Patent number: 9650938
    Abstract: Arranged are a selective reduction catalyst for reacting NOx in exhaust gas 2 with ammonia, an exhaust passage 5 for guiding the exhaust gas 2 to the selective reduction catalyst, and a urea water addition unit 4 incorporated in the exhaust passage 5 for adding urea water 3 into the exhaust gas 2. A portion of the exhaust passage 5 adjacent to an added position of the urea water 3 is constituted by a divisional piece 5a made of material having higher corrosive resistance to a substance produced by addition of the urea water 3 than that of a material constituting the remaining portion of the exhaust passage 5 other than the adjacent portion.
    Type: Grant
    Filed: March 16, 2011
    Date of Patent: May 16, 2017
    Assignees: HINO MOTORS, LTD., ISUZU MOTORS LIMITED
    Inventors: Minoru Kowada, Toshiaki Kuroki, Ryoji Suzuki, Hiroshi Uchigata, Toshiyuki Yamada
  • Publication number: 20170060061
    Abstract: When ending image forming, a state is realized where charging by a charging roller is stopped (charging bias off) and also applying DC voltage at a developing device is stopped (developing bias DC off). In this state, AC voltage is applied to the developing device (developing bias AC on), thereby adhering toner to the surface of a photosensitive drum and forming interposing toner. Driving of the photosensitive drum and an intermediate transfer belt is then stopped in the state with the interposing toner interposed between the photosensitive drum and intermediate transfer belt.
    Type: Application
    Filed: August 23, 2016
    Publication date: March 2, 2017
    Inventors: Yasushi Takeuchi, Takayuki Ganko, Koji Arimura, Yusuke Ishida, Takanori Iida, Toshiyuki Yamada, Daisuke Makino, Taisuke Matsuura
  • Publication number: 20170060032
    Abstract: In the present invention, an image forming apparatus using a method of replacing a developer is configured such that an immobile area in which the heights of a discharge passage and a conveyance passage are changed on the upstream side of a returning screw is filled. This causes the immobile area of the developer to be unlikely to occur and accordingly suppresses formation of a toner stain image due to an aggregation toner, enabling stable image formation over a long period of time.
    Type: Application
    Filed: August 29, 2016
    Publication date: March 2, 2017
    Inventors: Takanori Iida, Yusuke Ishida, Yasushi Takeuchi, Toshiyuki Yamada
  • Publication number: 20170060034
    Abstract: A developing device includes a developing container, a developing sleeve, a magnet and grooves provided at a surface of the sleeve and formed along a direction crossing a circumferential direction of the sleeve. In a cross-section, each of the grooves is formed by a flat bottom portion contacting a carrier particle and a pair of side surface portions provided in both sides of the flat bottom portion with respect to the circumferential direction of the sleeve and satisfies the following relationship: r<w<2r, 2×r<L, and r/2?s<2r. In the above, r is a volume-average particle size of the carrier particles, w is a length of the flat bottom portion, L is a width between the side surface portions at the surface of the sleeve, and s is a depth of each of the grooves.
    Type: Application
    Filed: August 9, 2016
    Publication date: March 2, 2017
    Inventors: Yusuke Ishida, Takanori Iida, Yasushi Takeuchi, Toshiyuki Yamada, Shiro Higashikozono, Hiroto Kakinuma, Toshiya Kobayashi
  • Patent number: 9242655
    Abstract: A crash energy absorber is provided at a front portion of a carbody of a railcar and configured to crush by a load from a front side to absorb crash energy. The crash energy absorber includes: a main absorbing portion extending in a front-rear direction; and a pair of sub absorbing portions respectively provided at upper and lower sides of the main absorbing portion. Each of the pair of sub absorbing portions is formed integrally with the main absorbing portion via breakable portions each extending in the front-rear direction.
    Type: Grant
    Filed: October 11, 2011
    Date of Patent: January 26, 2016
    Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventors: Makoto Taguchi, Atsushi Sano, Toshiyuki Yamada, Hideki Kumamoto, Seiichiro Yagi, Masayuki Tomizawa
  • Patent number: 9247103
    Abstract: Provided is an image processing device including an image target separating unit that separates a read printed document into image targets, a page aggregation state determining unit that determines a page aggregation state of the read printed document based on a layout of the image targets separated by the image target separating unit, a printing direction determining unit that determines a printing direction of each of pages determined by the page aggregation state determining unit based on a features of each of the image targets separated by the image target separating unit, and a document format converting unit that converts a document format of the read printed document based on the results of the determination by the page aggregation state determining unit and the printing direction determining unit.
    Type: Grant
    Filed: July 26, 2012
    Date of Patent: January 26, 2016
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Hiroshi Niina, Toshiyuki Yamada, Hiroshi Hayashi, Kenji Ueda, Tatsuya Namiki
  • Patent number: 9180894
    Abstract: Provided is a floor structure of a railcar in which thickness of a heat insulating material can be reduced while having predetermined heat resistance. The floor structure of the railcar includes a underframe having a pair of side sills extending in a railcar longitudinal direction and a cross beam arranged between the side sills and extending in a railcar width direction, a structural floor provided on an upper surface of the underframe, and a first heat insulating material arranged on a lower side of the structural floor via an air layer for the structural floor.
    Type: Grant
    Filed: November 4, 2011
    Date of Patent: November 10, 2015
    Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventors: Makoto Taguchi, Atsushi Sano, Toshiyuki Yamada, Osamu Muragishi, Masashi Kawamura, Yuji Kamei, Shuichi Mizuma
  • Patent number: 9108647
    Abstract: A bodyshell structure of a railcar, includes a plurality of side window opening portions formed on a side bodyshell along a railcar longitudinal direction, and the side window opening portions include a plurality of large window opening portions arranged on a railcar-longitudinal-direction center portion of the side bodyshell and a plurality of small window opening portions arranged on both railcar-longitudinal-direction sides of the large window opening portions and each having a smaller opening area than the large window opening portion.
    Type: Grant
    Filed: July 12, 2011
    Date of Patent: August 18, 2015
    Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventors: Makoto Taguchi, Atsushi Sano, Toshiyuki Yamada, Hideki Kumamoto, Seiichiro Yagi, Masayuki Tomizawa