Patents by Inventor Masahiro Hayakawa

Masahiro Hayakawa 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: 9090016
    Abstract: An injection molding machine includes first and second friction members, an expandable/retractable member provided in a periphery of the first and second friction members and including first and second end parts, a first attachment member attached to the first end part, and a second attachment member attached to the second end part. A lubricating oil is fed to an area between first and second friction members. A position of the second attachment member relative to the first attachment member is displaced in cooperation with a position of the second friction member relative to the first friction member. The expandable/retractable member is configured to form a reservoir space that stores the lubricating oil in the periphery of the first and second friction members. The expandable/retractable member is configured to expand/retract in correspondence with an interval between the first attachment member and the second attachment member.
    Type: Grant
    Filed: February 5, 2014
    Date of Patent: July 28, 2015
    Assignee: SUMITOMO HEAVY INDUSTRIES, LTD.
    Inventors: Shigeru Takeuchi, Masahiro Hayakawa, Hiromichi Nosaka
  • Patent number: 9041757
    Abstract: An image forming apparatus including a control unit configured to cause the light irradiation unit to irradiate the photosensitive member at an image forming portion to which toner particles adhere with light emitted from the light source by a first light emission amount, and cause the light irradiation unit to irradiate the photosensitive member at a non-image forming portion to which no toner particles adhere with light emitted from the light source by a second light emission amount that is smaller than the first light emission amount. The image forming apparatus further includes an adjusting unit configured to adjust the first light emission amount and the second light emission amount, and an acquisition unit configured to acquire information relating to a speed of surface of the photosensitive member. The adjusting unit is configured to change the second light emission amount according to information acquired by the acquisition unit.
    Type: Grant
    Filed: June 5, 2013
    Date of Patent: May 26, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masahiro Hayakawa, Kengo Kawamoto
  • Patent number: 8934798
    Abstract: An image forming apparatus includes an exposure unit configured to form a latent image by irradiating a charged photosensitive member with light, and a control unit configured to cause the exposure unit to expose an image portion to which toner of the photosensitive member is to be adhered by a first exposure amount, and expose a non-image portion to which the toner of the photosensitive member is not to be adhered by a second exposure amount which is smaller than the first exposure amount. The control unit corrects the preset second exposure amount based on information about a difference between the charging voltage output from the charging unit and a predetermined charging voltage and/or information about a difference between the developing voltage output from the developing unit and a predetermined developing voltage.
    Type: Grant
    Filed: September 9, 2013
    Date of Patent: January 13, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventor: Masahiro Hayakawa
  • Patent number: 8926315
    Abstract: An injection molding machine includes an electric ejector configured to eject a molding product from a mold, and an assist actuator configured to assist ejection of the molding product by the electric ejector.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: January 6, 2015
    Assignee: Sumitomo Heavy Industries, Ltd.
    Inventors: Shigeru Takeuchi, Masahiro Hayakawa
  • Publication number: 20140227381
    Abstract: An injection molding machine includes first and second friction members, an expandable/retractable member provided in a periphery of the first and second friction members and including first and second end parts, a first attachment member attached to the first end part, and a second attachment member attached to the second end part. A lubricating oil is fed to an area between first and second friction members. A position of the second attachment member relative to the first attachment member is displaced in cooperation with a position of the second friction member relative to the first friction member. The expandable/retractable member is configured to form a reservoir space that stores the lubricating oil in the periphery of the first and second friction members. The expandable/retractable member is configured to expand/retract in correspondence with an interval between the first attachment member and the second attachment member.
    Type: Application
    Filed: February 5, 2014
    Publication date: August 14, 2014
    Applicant: SUMITOMO HEAVY INDUSTRIES, LTD.
    Inventors: Shigeru Takeuchi, Masahiro Hayakawa, Hiromichi Nosaka
  • Publication number: 20140227380
    Abstract: An injection molding machine includes a cylinder that feeds a molding material, a screw that is rotatably and advanceably/retractably provided in the cylinder, a plasticizing motor that rotates the screw, a rotation transmission part that is provided in a rear side of the screw in an axial direction of the screw and configured to transmit rotation of the plasticizing motor to the screw. The rotation transmission part includes first and second transmission members provided in a passage where the rotation of the plasticizing motor is transmitted to the screw. The first transmission member is provided toward the plasticizing motor. The second transmission member is provided toward the screw. The first and second transmission members are connected to move relative to each other.
    Type: Application
    Filed: January 22, 2014
    Publication date: August 14, 2014
    Applicant: SUMITOMO HEAVY INDUSTRIES, LTD.
    Inventors: Shigeru TAKEUCHI, Masahiro Hayakawa, Hiromichi Nosaka
  • Publication number: 20140152732
    Abstract: An image recording apparatus includes a head for ejecting ink, a moving mechanism for moving a recording medium, and a control part for controlling these constituent elements. The control part includes an information storage part, a conversion part, and a correction part. The conversion part converts input image data into converted image data which is suitable for image recording. The information storage part stores an LUT indicating a relation between the input image data and the converted image data for each head and each type of recording medium. The correction part updates the LUT on a representative recording medium on the basis of correction amounts determined in accordance with reference images which are recorded onto the representative recording medium and further updates the LUT on another type of recording medium. By virtue of providing this correction part, it is possible to simplify a correcting operation of recording densities.
    Type: Application
    Filed: July 25, 2012
    Publication date: June 5, 2014
    Applicant: DAINIPPON SCREEN MFG. CO., LTD.
    Inventors: Masahiro Hayakawa, Keiji Hatano
  • Publication number: 20140072318
    Abstract: An image forming apparatus includes an exposure unit configured to form a latent image by irradiating a charged photosensitive member with light, and a control unit configured to cause the exposure unit to expose an image portion to which toner of the photosensitive member is to be adhered by a first exposure amount, and expose a non-image portion to which the toner of the photosensitive member is not to be adhered by a second exposure amount which is smaller than the first exposure amount. The control unit corrects the preset second exposure amount based on information about a difference between the charging voltage output from the charging unit and a predetermined charging voltage and/or information about a difference between the developing voltage output from the developing unit and a predetermined developing voltage.
    Type: Application
    Filed: September 9, 2013
    Publication date: March 13, 2014
    Applicant: Canon Kabushiki Kaisha
    Inventor: Masahiro Hayakawa
  • Patent number: 8635474
    Abstract: An image forming apparatus includes a first control unit configured to control an operation of an image forming unit, and a second control unit configured to be capable of communicating with the first control unit and transmitting information associated with forming an image to the first control unit. The image forming apparatus has a normal operation mode in which an image forming operation is performed, a first power-saving operation mode in which an operation of the first control unit is stopped, and a second power-saving operation mode in which supplying of electric power to the second control unit is stopped. In the first power-saving operation mode, the second control unit determines whether to switch into the normal operation mode from the first power-saving operation mode. In the second power-saving operation mode, the first control unit determines whether to switch into the normal operation mode from the second power-saving operation mode.
    Type: Grant
    Filed: October 20, 2010
    Date of Patent: January 21, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Masahiro Hayakawa
  • Publication number: 20130328992
    Abstract: An image forming apparatus including a control unit configured to cause the light irradiation unit to irradiate the photosensitive member at an image forming portion to which toner particles adhere with light emitted from the light source by a first light emission amount, and cause the light irradiation unit to irradiate the photosensitive member at a non-image forming portion to which no toner particles adhere with light emitted from the light source by a second light emission amount that is smaller than the first light emission amount. The image forming apparatus further includes an adjusting unit configured to adjust the first light emission amount and the second light emission amount, and an acquisition unit configured to acquire information relating to a speed of surface of the photosensitive member. The adjusting unit is configured to change the second light emission amount according to information acquired by the acquisition unit.
    Type: Application
    Filed: June 5, 2013
    Publication date: December 12, 2013
    Inventors: Masahiro Hayakawa, Kengo Kawamoto
  • Publication number: 20130272742
    Abstract: A converter includes a switching unit configured to switch a voltage to be input, an inductor connected to the switching unit, a conversion unit configured to convert the voltage switched by the switching unit to be supplied to the inductor into a direct current voltage, a detection unit configured to detect the direct current voltage converted by the conversion unit, and a correction unit configured to correct the detected voltage detected by the detection unit, wherein an operation of the switching unit is controlled based on the voltage corrected by the correction unit.
    Type: Application
    Filed: March 15, 2013
    Publication date: October 17, 2013
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Shinichiro Matsumoto, Masahiro Hayakawa, Kenji Nemoto, Toshiki Takajo
  • Publication number: 20130251837
    Abstract: An injection molding machine including an ejector unit configured to eject a molding product from a mold, wherein the ejector unit includes a slide base freely movable relative to a toggle support disposed at a platen supporting the mold, a toggle mechanism configured to connect the toggle support and the slide base, disposed between the toggle support and the slide base, a driving source configured to operate the toggle mechanism in such a way that a distance between the toggle support and the slide base is changed, and an ejection member movable in conjunction with the slide base.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 26, 2013
    Applicant: SUMITOMO HEAVY INDUSTRIES, LTD.
    Inventors: Shigeru TAKEUCHI, Masahiro Hayakawa, Yosuke Ito, Akihisa Kobayashi
  • Publication number: 20130251842
    Abstract: An injection molding machine includes an electric ejector configured to eject a molding product from a mold, and an assist actuator configured to assist ejection of the molding product by the electric ejector.
    Type: Application
    Filed: March 14, 2013
    Publication date: September 26, 2013
    Applicant: SUMITOMO HEAVY INDUSTRIES, LTD.
    Inventors: Shigeru TAKEUCHI, Masahiro Hayakawa
  • Publication number: 20130038655
    Abstract: It is an object of the present invention to provide a technique which is capable of always achieving excellent print quality even in any use environment. In order to attain this object, a provisional print read data acquisition part displays provisional print read data which is acquired by reading a provisional printed matter, on a display part. When a user selects a position in the provisional printed matter through a provisional print read data display screen on which the provisional print read data is displayed, a selected position corresponding head specifying part specifies a head which performs printing on the selected position which is received and determines the head as a head to be corrected. A density correction part corrects the density of a printing area of which the head to be corrected is in charge.
    Type: Application
    Filed: August 18, 2010
    Publication date: February 14, 2013
    Inventors: Masahiro Hayakawa, Satoru Kiyohara, Sachiko Takeuchi
  • Patent number: 8332398
    Abstract: The present invention provides a database system capable of dealing with dynamic changes in an event that vary continuously with time. A database system outputs a retrieval output from data in response to a user's retrieval request on the basis of a retrieval logic. The retrieval logic is allowed to evolve on the basis of a logical model. This logical model establishes a general relationship which leads results from conditions relating to a group of events that are dealt by a data group. Moreover, a database system optimizes a data structure on the basis of the logical model. The logical model can be transferred in a separated manner from the specific data contents of the data group. Therefore, the logical model can be exported to another database system of the same kind, and also imported from another data base system of the same kind.
    Type: Grant
    Filed: May 29, 2003
    Date of Patent: December 11, 2012
    Assignees: Minolta Co., Ltd., Yuji Ikeda, Naoaki Suganuma
    Inventors: Kosuke Sasai, Masahiro Hayakawa, Yuji Ikeda, Naoaki Suganuma
  • Publication number: 20110126036
    Abstract: An image forming apparatus includes a first control unit configured to control an operation of an image forming unit, and a second control unit configured to be capable of communicating with the first control unit and transmitting information associated with forming an image to the first control unit. The image forming apparatus has a normal operation mode in which an image forming operation is performed, a first power-saving operation mode in which an operation of the first control unit is stopped, and a second power-saving operation mode in which supplying of electric power to the second control unit is stopped. In the first power-saving operation mode, the second control unit determines whether to switch into the normal operation mode from the first power-saving operation mode. In the second power-saving operation mode, the first control unit determines whether to switch into the normal operation mode from the second power-saving operation mode.
    Type: Application
    Filed: October 20, 2010
    Publication date: May 26, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Masahiro Hayakawa
  • Patent number: 7817948
    Abstract: This invention enables an image forming apparatus to perform highly precise misregistration detection without causing increased downtime or increased cost. For this, the image forming apparatus according to the invention comprises a detection unit for detecting a misregistration detection pattern formed on an endless belt. The employed misregistration detection pattern includes a first pattern array formed with a misregistration detection color or a reference position color, and a second pattern array formed with a misregistration detection color or a reference position color. The misregistration detection pattern is configured in a way that the first pattern and the second pattern have different shapes, and that the color order of the first patterns in the first pattern array and the color order of the second patterns in the second pattern array are different.
    Type: Grant
    Filed: September 18, 2009
    Date of Patent: October 19, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventor: Masahiro Hayakawa
  • Publication number: 20100074658
    Abstract: This invention enables an image forming apparatus to perform highly precise misregistration detection without causing increased downtime or increased cost. For this, the image forming apparatus according to the invention comprises a detection unit for detecting a misregistration detection pattern formed on an endless belt. The employed misregistration detection pattern includes a first pattern array formed with a misregistration detection color or a reference position color, and a second pattern array formed with a misregistration detection color or a reference position color. The misregistration detection pattern is configured in a way that the first pattern and the second pattern have different shapes, and that the color order of the first patterns in the first pattern array and the color order of the second patterns in the second pattern array are different.
    Type: Application
    Filed: September 18, 2009
    Publication date: March 25, 2010
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Masahiro HAYAKAWA
  • Patent number: 7609987
    Abstract: This invention enables an image forming apparatus to perform highly precise misregistration detection without causing increased downtime or increased cost. For this, the image forming apparatus according to the invention comprises a detection unit for detecting a misregistration detection pattern formed on an endless belt. The employed misregistration detection pattern includes a first pattern array formed with a misregistration detection color or a reference position color, and a second pattern array formed with a misregistration detection color or a reference position color. The misregistration detection pattern is configured in a way that the first pattern and the second pattern have different shapes, and that the color order of the first patterns in the first pattern array and the color order of the second patterns in the second pattern array are different.
    Type: Grant
    Filed: May 3, 2006
    Date of Patent: October 27, 2009
    Assignee: Canon Kabushiki Kaisha
    Inventor: Masahiro Hayakawa
  • Patent number: 7597001
    Abstract: A humidity measuring apparatus including: a humidity detecting element whose resistance value changes according to a humidity change; a resistor serially connected to the humidity detecting element; a signal output unit which outputs a clock signal to the humidity detecting element and the resistor; and a measuring unit which detects a voltage of a connecting point of the humidity detecting element and the resistor at predetermined timing from an edge of the clock signal and obtains a humidity based on the detected voltage, wherein an abnormality of the humidity detecting element is detected by detecting the voltage at timing different from the predetermined timing based on the voltage detected by the measuring unit.
    Type: Grant
    Filed: February 6, 2007
    Date of Patent: October 6, 2009
    Assignee: Canon Kabushiki Kaisha
    Inventor: Masahiro Hayakawa