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).
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Patent number: 8926315Abstract: 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: GrantFiled: March 14, 2013Date of Patent: January 6, 2015Assignee: Sumitomo Heavy Industries, Ltd.Inventors: Shigeru Takeuchi, Masahiro Hayakawa
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Publication number: 20140227380Abstract: 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: ApplicationFiled: January 22, 2014Publication date: August 14, 2014Applicant: SUMITOMO HEAVY INDUSTRIES, LTD.Inventors: Shigeru TAKEUCHI, Masahiro Hayakawa, Hiromichi Nosaka
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Publication number: 20140227381Abstract: 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: ApplicationFiled: February 5, 2014Publication date: August 14, 2014Applicant: SUMITOMO HEAVY INDUSTRIES, LTD.Inventors: Shigeru Takeuchi, Masahiro Hayakawa, Hiromichi Nosaka
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Publication number: 20140152732Abstract: 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: ApplicationFiled: July 25, 2012Publication date: June 5, 2014Applicant: DAINIPPON SCREEN MFG. CO., LTD.Inventors: Masahiro Hayakawa, Keiji Hatano
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Publication number: 20140072318Abstract: 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: ApplicationFiled: September 9, 2013Publication date: March 13, 2014Applicant: Canon Kabushiki KaishaInventor: Masahiro Hayakawa
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Patent number: 8635474Abstract: 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: GrantFiled: October 20, 2010Date of Patent: January 21, 2014Assignee: Canon Kabushiki KaishaInventor: Masahiro Hayakawa
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Publication number: 20130328992Abstract: 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: ApplicationFiled: June 5, 2013Publication date: December 12, 2013Inventors: Masahiro Hayakawa, Kengo Kawamoto
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Publication number: 20130272742Abstract: 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: ApplicationFiled: March 15, 2013Publication date: October 17, 2013Applicant: CANON KABUSHIKI KAISHAInventors: Shinichiro Matsumoto, Masahiro Hayakawa, Kenji Nemoto, Toshiki Takajo
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Publication number: 20130251837Abstract: 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: ApplicationFiled: March 15, 2013Publication date: September 26, 2013Applicant: SUMITOMO HEAVY INDUSTRIES, LTD.Inventors: Shigeru TAKEUCHI, Masahiro Hayakawa, Yosuke Ito, Akihisa Kobayashi
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Publication number: 20130251842Abstract: 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: ApplicationFiled: March 14, 2013Publication date: September 26, 2013Applicant: SUMITOMO HEAVY INDUSTRIES, LTD.Inventors: Shigeru TAKEUCHI, Masahiro Hayakawa
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Publication number: 20130038655Abstract: 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: ApplicationFiled: August 18, 2010Publication date: February 14, 2013Inventors: Masahiro Hayakawa, Satoru Kiyohara, Sachiko Takeuchi
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Patent number: 8332398Abstract: 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: GrantFiled: May 29, 2003Date of Patent: December 11, 2012Assignees: Minolta Co., Ltd., Yuji Ikeda, Naoaki SuganumaInventors: Kosuke Sasai, Masahiro Hayakawa, Yuji Ikeda, Naoaki Suganuma
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Publication number: 20110126036Abstract: 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: ApplicationFiled: October 20, 2010Publication date: May 26, 2011Applicant: CANON KABUSHIKI KAISHAInventor: Masahiro Hayakawa
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Patent number: 7817948Abstract: 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: GrantFiled: September 18, 2009Date of Patent: October 19, 2010Assignee: Canon Kabushiki KaishaInventor: Masahiro Hayakawa
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Publication number: 20100074658Abstract: 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: ApplicationFiled: September 18, 2009Publication date: March 25, 2010Applicant: CANON KABUSHIKI KAISHAInventor: Masahiro HAYAKAWA
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Patent number: 7609987Abstract: 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: GrantFiled: May 3, 2006Date of Patent: October 27, 2009Assignee: Canon Kabushiki KaishaInventor: Masahiro Hayakawa
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Patent number: 7597001Abstract: 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: GrantFiled: February 6, 2007Date of Patent: October 6, 2009Assignee: Canon Kabushiki KaishaInventor: Masahiro Hayakawa
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Publication number: 20090246306Abstract: An injection apparatus having a mechanism wherein an object is advanced and retracted by a plurality of shafts 23, 24, the injection apparatus includes: a plurality of axial force detection parts 27, 28 configured to detect an axial force of each of the shafts 23, 24; and a control part 40 configured to compare detection values detected by the axial force detection parts 27, 28, the control part 40 being configured to calculate an amount of operation of a position of a shaft to be operated in the plurality of the shafts 23, 24 based on a difference of the axial forces of the shafts 23, 24 indicated by the detection values so as to correct the position, the control part 40 being configured to cancel the difference of the axial forces.Type: ApplicationFiled: November 20, 2006Publication date: October 1, 2009Inventors: Naohiro Yoshida, Hiroshi Morita, Masahiro Hayakawa, Hiroshi Satou
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Publication number: 20090243131Abstract: An injection molding machine includes a pressure detector 35, 48, 87 or 151 being a strain detector configured to detect strain when voltage is input to the strain detector. A value of the voltage being input to the pressure detector 35, 48, 87 or 151 is changed during one molding cycle.Type: ApplicationFiled: September 14, 2007Publication date: October 1, 2009Applicant: Sumitomo Heavy Industries, Ltd.Inventors: Motoki Tanaka, Okito Nishio, Masahiro Hayakawa, Naohiro Yoshida, Daisuke Maruo
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Publication number: 20080098016Abstract: 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: ApplicationFiled: December 7, 2007Publication date: April 24, 2008Applicants: MINOLTA CO., LTD.Inventors: Kosuke Sasai, Masahiro Hayakawa, Yuji Ikeda, Naoaki Suganuma