Patents by Inventor Eigo Nakagawa
Eigo Nakagawa 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: 9840093Abstract: A light emitting elements drive control device includes: a supplying unit that supplies a common power source voltage to a plurality of light emitting elements whose light emission quantities are controlled individually by current controls; a determining unit that determines voltage ranges capable of assuring proper current control operations on the individual light emitting elements based on drive voltages for the respective light emitting elements that vary as the current controls are performed; and a setting unit that sets the power source voltage to be supplied from the supplying unit from a common voltage range of the voltage ranges determined by the determining unit.Type: GrantFiled: October 31, 2016Date of Patent: December 12, 2017Assignee: Fuji Xerox Co., Ltd.Inventors: Eigo Nakagawa, Akira Sakamoto, Chikaho Ikeda, Jun Isozaki
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Publication number: 20170043594Abstract: A light emitting elements drive control device includes: a supplying unit that supplies a common power source voltage to a plurality of light emitting elements whose light emission quantities are controlled individually by current controls; a determining unit that determines voltage ranges capable of assuring proper current control operations on the individual light emitting elements based on drive voltages for the respective light emitting elements that vary as the current controls are performed; and a setting unit that sets the power source voltage to be supplied from the supplying unit from a common voltage range of the voltage ranges determined by the determining unit.Type: ApplicationFiled: October 31, 2016Publication date: February 16, 2017Inventors: Eigo Nakagawa, Akira Sakamoto, Chikaho Ikeda, Jun Isozaki
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Patent number: 9527313Abstract: A light emitting elements drive control device includes: a supplying unit that supplies a common power source voltage to a plurality of light emitting elements whose light emission quantities are controlled individually by current controls; a determining unit that determines voltage ranges capable of assuring proper current control operations on the individual light emitting elements based on drive voltages for the respective light emitting elements that vary as the current controls are performed; and a setting unit that sets the power source voltage to be supplied from the supplying unit from a common voltage range of the voltage ranges determined by the determining unit.Type: GrantFiled: August 19, 2015Date of Patent: December 27, 2016Assignee: Fuji Xerox Co., Ltd.Inventors: Eigo Nakagawa, Akira Sakamoto, Chikaho Ikeda, Jun Isozaki
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Publication number: 20160214402Abstract: A light emitting elements drive control device includes: a supplying unit that supplies a common power source voltage to a plurality of light emitting elements whose light emission quantities are controlled individually by current controls; a determining unit that determines voltage ranges capable of assuring proper current control operations on the individual light emitting elements based on drive voltages for the respective light emitting elements that vary as the current controls are performed; and a setting unit that sets the power source voltage to be supplied from the supplying unit from a common voltage range of the voltage ranges determined by the determining unit.Type: ApplicationFiled: August 19, 2015Publication date: July 28, 2016Inventors: Eigo Nakagawa, Akira Sakamoto, Chikaho Ikeda, Jun Isozaki
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Patent number: 9372551Abstract: An image reading apparatus includes: a light source that irradiates light; a switching unit that switches a direction of the light irradiated by the light source to one of a plurality of predetermined directions; a light guiding unit that guides the light whose direction is switched by the switching unit and that travels in one of the plurality of directions to a position predetermined for each of the directions; and a light sensor that, in a case where an object is in the predetermined position, measures light reflect by the object out of the light guided to the position by the light guiding unit.Type: GrantFiled: September 14, 2009Date of Patent: June 21, 2016Assignee: FUJI XEROX CO., LTD.Inventors: Yasuhiro Ogasawara, Shin Takeuchi, Eisuke Osakabe, Eigo Nakagawa, Hirokazu Ichikawa, Kazushige Ooi, Hidenobu Takahira
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Patent number: 8643916Abstract: A reading device includes a first illuminating section that illuminates a reading area with first illumination light of a first direction; a second illuminating section that illuminates the reading area with second illumination light of a second direction; a light-receiving section that receives reflection light of the first illumination light and reflection light of the second illumination light reflected from the reading area, the first illumination light being applied from the first illuminating section and the second illumination light being applied from the second illuminating section; and reflecting members that are disposed side by side in the reading area in a widthwise direction thereof, and that have first and second reflecting surfaces.Type: GrantFiled: May 25, 2012Date of Patent: February 4, 2014Assignee: Fuji Xerox Co., Ltd.Inventors: Hirokazu Ichikawa, Yoshiro Yamaguchi, Eigo Nakagawa, Jiro Matsuda
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Patent number: 8570307Abstract: The electronic writing instrument is provided with: a writing unit that writes down on a medium where a code indicating identity information and location information of the medium is formed; an emitting unit that emits light to the medium; a photoelectric conversion unit that includes photoelectric conversion element receiving a reflected light from the medium by the light emitted by the emitting unit and outputting an electronic signal after converting the reflected light by photoelectric conversion; a receiving unit that receives a user operation; and a condition changing unit that changes at least any one of an emitting condition of the emitting unit to the medium and an output condition of the photoelectric conversion unit when the receiving unit receives an operation.Type: GrantFiled: January 27, 2012Date of Patent: October 29, 2013Assignee: Fuji Xerox Co., Ltd.Inventors: Shin Takeuchi, Eisuke Osakabe, Eigo Nakagawa, Hiroyuki Funo, Tomohito Takagi
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Publication number: 20130120808Abstract: A reading device includes a first illuminating section that illuminates a reading area with first illumination light of a first direction; a second illuminating section that illuminates the reading area with second illumination light of a second direction; a light-receiving section that receives reflection light of the first illumination light and reflection light of the second illumination light reflected from the reading area, the first illumination light being applied from the first illuminating section and the second illumination light being applied from the second illuminating section; and reflecting members that are disposed side by side in the reading area in a widthwise direction thereof, and that have first and second reflecting surfaces.Type: ApplicationFiled: May 25, 2012Publication date: May 16, 2013Applicant: FUJI XEROX CO., LTD.Inventors: Hirokazu ICHIKAWA, Yoshiro YAMAGUCHI, Eigo NAKAGAWA, Jiro MATSUDA
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Publication number: 20120133620Abstract: The electronic writing instrument is provided with: a writing unit that writes down on a medium where a code indicating identity information and location information of the medium is formed; an emitting unit that emits light to the medium; a photoelectric conversion unit that includes photoelectric conversion element receiving a reflected light from the medium by the light emitted by the emitting unit and outputting an electronic signal after converting the reflected light by photoelectric conversion; a receiving unit that receives a user operation; and a condition changing unit that changes at least any one of an emitting condition of the emitting unit to the medium and an output condition of the photoelectric conversion unit when the receiving unit receives an operation.Type: ApplicationFiled: January 27, 2012Publication date: May 31, 2012Applicant: FUJI XEROX CO., LTD.Inventors: Shin TAKEUCHI, Eisuke OSAKABE, Eigo NAKAGAWA, Hiroyuki FUNO, Tomohito TAKAGI
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Patent number: 8169423Abstract: The electronic writing instrument is provided with: a writing unit that writes down on a medium where a code indicating identity information and location information of the medium is formed; an emitting unit that emits light to the medium; a photoelectric conversion unit that includes photoelectric conversion element receiving a reflected light from the medium by the light emitted by the emitting unit and outputting an electronic signal after converting the reflected light by photoelectric conversion; a receiving unit that receives a user operation; and a condition changing unit that changes at least any one of an emitting condition of the emitting unit to the medium and an output condition of the photoelectric conversion unit when the receiving unit receives an operation.Type: GrantFiled: March 28, 2008Date of Patent: May 1, 2012Assignee: Fuji Xerox Co., Ltd.Inventors: Shin Takeuchi, Eisuke Osakabe, Eigo Nakagawa, Hiroyuki Funo, Tomohito Takagi
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Patent number: 8132049Abstract: A failure diagnosis method diagnoses a failure occurring in a diagnosis target apparatus including a drive mechanism having a drive member that receives power supply to operate and a power transmission member that transmits drive force of the drive member to another member. The method includes automatically acquiring by a sensor an operation state signal indicating an operation state during the drive mechanism operating for a predetermined period; and analyzing the automatically acquired operation state signal based on a failure probability model, which is obtained by modeling a cause of failure occurring in the diagnosis target apparatus with using probabilities, to execute failure diagnosis with respect to each of constituent members of the drive mechanism.Type: GrantFiled: February 23, 2005Date of Patent: March 6, 2012Assignee: Fuji Xerox Co., Ltd.Inventors: Kaoru Yasukawa, Kouji Adachi, Kouki Uwatoko, Norikazu Yamada, Eigo Nakagawa, Tetsuichi Satonaga
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Publication number: 20100155478Abstract: An image reading apparatus includes: a light source that irradiates light; a switching unit that switches a direction of the light irradiated by the light source to one of a plurality of predetermined directions; a light guiding unit that guides the light whose direction is switched by the switching unit and that travels in one of the plurality of directions to a position predetermined for each of the directions; and a light sensor that, in a case where an object is in the predetermined position, measures light reflect by the object out of the light guided to the position by the light guiding unit.Type: ApplicationFiled: September 14, 2009Publication date: June 24, 2010Inventors: Yasuhiro OGASAWARA, Shin Takeuchi, Eisuke Osakabe, Eigo Nakagawa, Hirokazu Ichikawa, Kazushige Ooi, Hidenobu Takahira
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Publication number: 20100142856Abstract: A image reading apparatus includes an pointing part that points a position on a medium that has an image to be read formed thereon, an irradiating unit that irradiates light onto the medium on which the position was pointed by the pointing part, an imaging unit that forms an image of light reflected from the medium irradiated with light by the irradiating unit, a generating unit that generates a signal representing the image to be read that depends on the reflected light whose image is formed by the imaging unit, and a changing unit that varies an direction of the imaging unit, and changes the position on the image that is imaged by the generating unit, within an irradiation range irradiated with light by the irradiating unit.Type: ApplicationFiled: September 11, 2009Publication date: June 10, 2010Inventors: Shin TAKEUCHI, Hidenobu Takahira, Eigo Nakagawa, Kazushige Ooi, Yoshio Nishihara
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Patent number: 7489881Abstract: A failure prevention diagnosis support system includes: an acquiring portion that acquires internal information about an internal state of an image forming apparatus; a storage portion that stores one or a plurality of logistic regression models that define an estimate value of a regression coefficient through a logistic regression analysis using the internal information obtained when the image forming apparatus is in a failed state and in a normal state; and a controller that performs a control operation to select a logistic regression model from the one or the plurality of the logistic regression models stored in the storage portion in accordance with the image forming apparatus, and to calculate risk degrees as objective variables that are indicators of failure degrees in the image forming apparatus by assigning the internal information acquired by the acquiring portion or the value obtained from the internal information to the selected logistic regression model.Type: GrantFiled: December 28, 2006Date of Patent: February 10, 2009Assignee: Fuji Xerox Co., Ltd.Inventors: Kaoru Yasukawa, Koji Adachi, Koki Uwatoko, Tetsuichi Satonaga, Norikazu Yamada, Eigo Nakagawa
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Publication number: 20090003733Abstract: An electronic writing instrument is provided with: an electronic writing instrument body portion that captures a code image formed on a medium based on reflected light; and a detachable cap that is attached to the one end side of the electronic writing instrument body portion. The electronic writing instrument body portion has: at one end side thereof, a writing unit that writes down on the medium on which the code image is formed; a light emitting unit that emits light to the medium; and an image capture unit that captures an image from reflected light reflected on the medium by the emitting light. The detachable cap is configured so as to cover the writing unit when attached to the one end side, and to pass emitted light from the light emitting unit and the reflected light from the medium.Type: ApplicationFiled: January 22, 2008Publication date: January 1, 2009Applicant: Fuji Xerox Co., Ltd.Inventors: Eisuke OSAKABE, Tomohito TAKAGI, Shin TAKEUCHI, Eigo NAKAGAWA, Hiroyuki FUNO
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Publication number: 20080285070Abstract: The electronic writing instrument is provided with: a writing unit that writes down on a medium where a code indicating identity information and location information of the medium is formed; an emitting unit that emits light to the medium; a photoelectric conversion unit that includes photoelectric conversion element receiving a reflected light from the medium by the light emitted by the emitting unit and outputting an electronic signal after converting the reflected light by photoelectric conversion; a receiving unit that receives a user operation; and a condition changing unit that changes at least any one of an emitting condition of the emitting unit to the medium and an output condition of the photoelectric conversion unit when the receiving unit receives an operation.Type: ApplicationFiled: March 28, 2008Publication date: November 20, 2008Applicant: Fuji Xerox Co., Ltd.Inventors: Shin TAKEUCHI, Eisuke OSAKABE, Eigo NAKAGAWA, Hiroyuki FUNO, Tomohito TAKAGI
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Patent number: 7403870Abstract: A trouble sensing device has a first unit and a second unit. The first unit determines a total sum of driving current of two or more of a plurality of driving mechanisms that are turned on. The second unit judges whether trouble has arisen based on the total sum of the driving current.Type: GrantFiled: October 4, 2005Date of Patent: July 22, 2008Assignee: Fuji Xerox Co., Ltd.Inventors: Kaoru Yasukawa, Koji Adachi, Norikazu Yamada, Koki Uwatoko, Eigo Nakagawa, Tetsuichi Satonaga
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Patent number: 7324909Abstract: A fault diagnosis section activates a driving component alone, measures an operation state signal and a paper passage time, and stores feature values (Vm, ?v, Tqs, ?ts) extracted as a determination reference in a storage medium. A paper passage fault determination section determines whether or not a fault has arisen on the basis of the paper passage time when an apparatus is under normal operating conditions. A diagnosis target block determination section determines an order to operate a detail fault diagnosis when it is determined that there is a plurality of diagnosis target blocks.Type: GrantFiled: December 27, 2006Date of Patent: January 29, 2008Assignee: Fuji Xerox Co., Ltd.Inventors: Kaoru Yasukawa, Koji Adachi, Eigo Nakagawa, Tetsuichi Satonaga, Norikazu Yamada, Koki Uwatoko
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Publication number: 20070280706Abstract: A failure prevention diagnosis support system includes: an acquiring portion that acquires internal information about an internal state of an image forming apparatus; a storage portion that stores one or a plurality of logistic regression models that define an estimate value of a regression coefficient through a logistic regression analysis using the internal information obtained when the image forming apparatus is in a failed state and in a normal state; and a controller that performs a control operation to select a logistic regression model from the one or the plurality of the logistic regression models stored in the storage portion in accordance with the image forming apparatus, and to calculate risk degrees as objective variables that are indicators of failure degrees in the image forming apparatus by assigning the internal information acquired by the acquiring portion or the value obtained from the internal information to the selected logistic regression model.Type: ApplicationFiled: December 28, 2006Publication date: December 6, 2007Applicant: FUJI XEROX CO., LTD.Inventors: Kaoru Yasukawa, Koji Adachi, Koki Uwatoko, Tetsuichi Satonaga, Norikazu Yamada, Eigo Nakagawa
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Patent number: 7275009Abstract: A fault diagnosis section activates a driving component alone, measures an operation state signal and a paper passage time, and stores feature values (Vm, ?v, Tqs, ?ts) extracted as a determination reference in a storage medium. A paper passage fault determination section determines whether or not a fault has arisen on the basis of the paper passage time when an apparatus is under normal operating conditions. A diagnosis target block determination section determines an order to operate a detail fault diagnosis when it is determined that there is a plurality of diagnosis target blocks.Type: GrantFiled: April 20, 2006Date of Patent: September 25, 2007Assignee: Fuji Xerox Co., Ltd.Inventors: Kaoru Yasukawa, Koji Adachi, Eigo Nakagawa, Tetsuichi Satonaga, Norikazu Yamada, Koki Uwatoko