Patents Assigned to Canon Denshi Kabushiki Kaisha
  • Patent number: 9746497
    Abstract: When a through hole is formed in a primary conductor, a measurement target current partially becomes a bypass current that flows around the through hole. Only a magnetic field component in the X-axis direction is generated from the current that flows through a portion without the influence of the through hole. However, the bypass current generates a magnetic field component in the Y-axis direction at the tilt portion. A magnetic detection element having a magnetic field detection sensitivity only in the Y-axis direction is installed near the through hole such that the magnetic field detection direction is set in the Y-axis direction, thereby detecting the magnetic field component and measuring the current amount without the influence of a neighboring current.
    Type: Grant
    Filed: September 5, 2012
    Date of Patent: August 29, 2017
    Assignee: Canon Denshi Kabushiki Kaisha
    Inventor: Masahiro Kawase
  • Patent number: 9715104
    Abstract: The light-quantity control apparatus includes a base member, and a light-quantity control blade having a light-quantity control portion to control a quantity of light passing through a fixed aperture and a supported portion rotatably supported with respect to the base member. The light-quantity control portion and the supported portion of the light-quantity control blade are each rotated along a plane parallel to the aperture face, an intermediate portion thereof formed between the light-quantity control portion and the supported portion has a tilt with respect to the aperture plane toward the optical axis direction so that the light-quantity control portion is disposed distant from the supported portion in the optical axis direction. Thereby a concave space facing the fixed aperture is formed inside in the radial direction than the light-quantity control blade.
    Type: Grant
    Filed: January 2, 2014
    Date of Patent: July 25, 2017
    Assignee: Canon Denshi Kabushiki Kaisha
    Inventors: Satoshi Kozu, Akira Fujita
  • Patent number: 9664899
    Abstract: Provided is an optical scanning device that can be downsized and improve the reading rate of a laser-type image reading system. This is an optical scanning device that includes a torsion beam, and a variable focus mirror that is supported by the torsion beam. Furthermore, the variable focus mirror is supported at two symmetrical positions with respect to the axis of rotation of the torsion beam.
    Type: Grant
    Filed: October 17, 2014
    Date of Patent: May 30, 2017
    Assignee: CANON DENSHI KABUSHIKI KAISHA
    Inventors: Naruki Suzuki, Takayuki Wakabayashi, Katsumi Arai
  • Patent number: 9651583
    Abstract: A measurement module includes a pair of input terminals, a pair of current paths connected to the pair of input terminals, and a pair of output terminals. A partition that is a non-magnetic insulating portion partitions an internal space of the measurement module into two spaces. Low-current components such as a magnetic detection element are disposed in a space different from a space in which the pair of current paths are housed. The presence of the partition allows the low-current components and the pair of current paths to be disposed close to one another, thus making it possible to reduce the size of the measurement module.
    Type: Grant
    Filed: September 5, 2014
    Date of Patent: May 16, 2017
    Assignee: CANON DENSHI KABUSHIKI KAISHA
    Inventor: Masahiro Kawase
  • Patent number: 9648206
    Abstract: An output image having high visibility for a user is obtained. An effective image region for an image is designated. Whether a direction of the image is visually an upper or lower direction is detected. A header of a source document region in the image is detected. When the direction of the image is the upper direction, the effective image region is output as an output image with reference to the header of the source document region. When the direction of the image is the lower direction, the image is rotated, and the effective image region is output as an output image with reference to the header of the source document region.
    Type: Grant
    Filed: October 1, 2013
    Date of Patent: May 9, 2017
    Assignee: CANON DENSHI KABUSHIKI KAISHA
    Inventor: Toshifumi Jittou
  • Patent number: 9627108
    Abstract: The present invention provides a method for manufacturing a metal material. The method comprises a temperature increasing step of increasing the temperature of a silver material having undergone final plastic working to 700° C. or more and less than a melting point of the silver material in a vacuum or a helium gas atmosphere, a heating step of maintaining the silver material at 700° C. or more and less than the melting point, and a cooling step of cooling the silver material to room temperature in a vacuum or a helium gas atmosphere. For a part of the period of the heating step, the silver material is heated in a mixed atmosphere in which hydrogen gas is mixed with helium gas.
    Type: Grant
    Filed: April 1, 2013
    Date of Patent: April 18, 2017
    Assignee: CANON DENSHI KABUSHIKI KAISHA
    Inventor: Hiroshi Yamashita
  • Publication number: 20170088385
    Abstract: User labor relating to determining on an alignment condition is reduced and a stable conveying operation is realized by aligning a sheet bundle also when a sheet bundle is added. A sheet bundle composed of multiple sheet materials is placed on a loading platform. An encoder pulse unit detects the amount of the sheet bundle placed on the loading platform based on the opening amount of a pressure plate. A control unit determines on an alignment condition according to the amount of the sheet bundle. Rotating members align the sheet bundle in accordance with the alignment condition. When it is determined that another sheet bundle has been added to the loading platform, the control unit updates the alignment condition according to the total amount of the other sheet bundle and the sheet bundle remaining on the loading platform.
    Type: Application
    Filed: December 9, 2016
    Publication date: March 30, 2017
    Applicant: CANON DENSHI KABUSHIKI KAISHA
    Inventor: Koichi Kajiki
  • Patent number: 9588266
    Abstract: There is provided an optical filter of the type having absorption and with low reflection, which includes a light-transmitting substrate; and a light-absorbing gradient refractive index thin film provided on the substrate and whose refractive index changes so as to be close to the refractive index of the substrate toward the substrate side in a film thickness direction. There is also provided an optical apparatus using the optical filter.
    Type: Grant
    Filed: May 17, 2012
    Date of Patent: March 7, 2017
    Assignee: Canon Denshi Kabushiki Kaisha
    Inventors: Masayuki Uchiyama, Michio Yanagi
  • Patent number: 9588401
    Abstract: There is provided with a fiber-reinforced laminate. The fiber-reinforced laminate has a first fiber-reinforced layer and a second fiber-reinforced layer. The fiber-reinforced laminate also has a metal layer provided between the first fiber-reinforced layer and the second fiber-reinforced layer.
    Type: Grant
    Filed: December 10, 2014
    Date of Patent: March 7, 2017
    Assignee: CANON DENSHI KABUSHIKI KAISHA
    Inventors: Kana Matsuda, Michiyo Hashizume, Yuki Saito, Mizuho Igawa, Munetoshi Yoshikawa, Michio Yanagi, Yaomin Zhou
  • Patent number: 9555995
    Abstract: User labor relating to determining on an alignment condition is reduced and a stable conveying operation is realized by aligning a sheet bundle also when a sheet bundle is added. A sheet bundle composed of multiple sheet materials is placed on a loading platform. An encoder pulse unit detects the amount of the sheet bundle placed on the loading platform based on the opening amount of a pressure plate. A control unit determines on an alignment condition according to the amount of the sheet bundle. Rotating members align the sheet bundle in accordance with the alignment condition. When it is determined that another sheet bundle has been added to the loading platform, the control unit updates the alignment condition according to the total amount of the other sheet bundle and the sheet bundle remaining on the loading platform.
    Type: Grant
    Filed: June 9, 2015
    Date of Patent: January 31, 2017
    Assignee: Canon Denshi Kabushiki Kaisha
    Inventor: Koichi Kajiki
  • Patent number: 9513417
    Abstract: Regarding an optical filter comprising a light-transmitting substrate, a gradient refractive index thin film with a refractive index change in the film thickness direction formed on the substrate and an anti-reflection structure formed on the gradient refractive index thin film, the gradient refractive index thin film is formed so as to have light absorbing characteristic and a refractive index characteristic such that the refractive index change comprising plural changing points with increases and decreases of the refractive index has a tendency to reduce from the side of the substrate toward the side of the anti-reflection structure. The optical filter has excellent environmental resistance and low reflection. The optical filter can be suitably used in an imaging optical system of an optical apparatus or a display of an electronic device.
    Type: Grant
    Filed: November 18, 2013
    Date of Patent: December 6, 2016
    Assignee: Canon Denshi Kabushiki Kaisha
    Inventors: Masayuki Uchiyama, Michio Yanagi
  • Patent number: 9516042
    Abstract: A main server and a mirror server hold the same content. A server switching apparatus sets only one of the web servers to be active. In the case where the mirror server has not been attacked in an immediately-previous operating period, the server switching apparatus switches from the main server to the mirror server. Upon receiving a request from a client computer, the server switching apparatus transfers the request to the active web server. The active web server then sends the requested content.
    Type: Grant
    Filed: October 20, 2014
    Date of Patent: December 6, 2016
    Assignee: CANON DENSHI KABUSHIKI KAISHA
    Inventors: Hisashi Sakamaki, Kiyoyuki Hattori, Yoshifumi Okamoto, Takashi Yotsuyanagi, Sumihiko Arima
  • Patent number: 9366941
    Abstract: A device according to the present invention includes at least one first light amount adjustment blade moving rectilinearly in a direction crossing a light passage direction and at least one second light amount adjustment blade pivoting within a plane crossing the light passage direction. When a light passage aperture of a polygonal shape formed by annularly superposing the first light amount adjustment blade and the second light amount adjustment blade is enlarged, a shape of the light passage aperture comes close to a circular shape from a polygonal shape.
    Type: Grant
    Filed: August 11, 2015
    Date of Patent: June 14, 2016
    Assignee: Canon Denshi Kabushiki Kaisha
    Inventors: Takahito Yoshizawa, Kyousuke Miyashita
  • Patent number: 9327968
    Abstract: A work hardening treatment which decreases the Young's modulus, and an age hardening treatment which recovers or increases the Young's modulus decreased by the work hardening treatment are performed to form a vibrating portion, thereby attaining a vibrating element advantageous in downsizing while ensuring desired fatigue characteristics and vibration characteristics. This downsizes, for example, an actuator device, an optical scanning device, a video projection apparatus, and an image forming apparatus.
    Type: Grant
    Filed: June 11, 2012
    Date of Patent: May 3, 2016
    Assignee: CANON DENSHI KABUSHIKI KAISHA
    Inventors: Naruki Suzuki, Katsumi Arai, Takayuki Wakabayashi
  • Patent number: 9316766
    Abstract: There is provided an optical filter or an anti-reflection structure with lower reflection in comparison with the conventional ones by comprising a gradient refractive index thin film 12 with continuous, periodic refractive index change in the film thickness direction and a fine periodic structure 151 lowering reflection, wherein the refractive index of the gradient refractive index thin film 12 in its thickness direction on the substrate side changes so as to become close to that of the substrate, while on the fine periodic structure 111 changes so as to become close to that of the fine periodic structure 151. The optical filter can be used in an optical device or an electronic device display.
    Type: Grant
    Filed: May 17, 2012
    Date of Patent: April 19, 2016
    Assignee: Canon Denshi Kabushiki Kaisha
    Inventors: Masayuki Uchiyama, Michio Yanagi
  • Patent number: 9231825
    Abstract: Configuration information representing the configuration elements of a client PC or the like on a network is compared with initial configuration information. When the configuration information changes, it is determined whether the configuration is proper. If the configuration is improper, the function of a corresponding configuration element to the network is inhibited. This can prevent an unstable state of the system, leakage of information, and a decrease in reliability of the network system upon a change in network configuration.
    Type: Grant
    Filed: November 9, 2005
    Date of Patent: January 5, 2016
    Assignee: Canon Denshi Kabushiki Kaisha
    Inventors: Hisashi Sakamaki, Kouichi Mochizuki, Ahimusa Uchida
  • Patent number: 9181050
    Abstract: A sheet feeding apparatus comprises a conveying path formed between an upper and a lower units facing each other; a feed roller which feeds a sheet by a portion partially exposed from an upper surface of the lower unit to the conveying path; a separation member disposed to oppose the feed roller; a stopper which stops entrance of the sheet into the conveying path by abutting against a sheet end in a closed state in which the stopper is moved in a direction to intersect with an exposed surface of the feed roller; a driving unit which drives at least the feed roller and the stopper; and a control unit which controls the driving unit to rotate the feed roller through a predetermined angle in a sheet feeding direction and to then open the stopper when feeding of the sheet is started from the closed state of the stopper.
    Type: Grant
    Filed: November 9, 2011
    Date of Patent: November 10, 2015
    Assignee: Canon Denshi Kabushiki Kaisha
    Inventors: Takashi Machida, Hiroshi Komuro, Hiroki Kitagawa
  • Patent number: D741331
    Type: Grant
    Filed: December 24, 2014
    Date of Patent: October 20, 2015
    Assignee: CANON DENSHI KABUSHIKI KAISHA
    Inventors: Masaaki Ishibashi, Misato Nakayama, Hiroshi Komuro, Minoru Sashida
  • Patent number: D756440
    Type: Grant
    Filed: April 16, 2013
    Date of Patent: May 17, 2016
    Assignee: CANON DENSHI KABUSHIKI KAISHA
    Inventor: Takahito Yoshizawa
  • Patent number: D794640
    Type: Grant
    Filed: September 8, 2016
    Date of Patent: August 15, 2017
    Assignee: Canon Denshi Kabushiki Kaisha
    Inventors: Takashi Shigeno, Manabu Ikarashi, Asako Chiba, Shinobu Kato, Tatsuya Nishi