Patents by Inventor Shinichi Takata
Shinichi Takata 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: 10061249Abstract: In an image forming apparatus, an image forming unit forms a first image of a first color and a second image of a second color. An obtaining unit obtains information related to relative positions of a first measurement image, which is formed on an image carrier, of the first color and a second measurement image, which is formed on an image carrier, of the second color. A generation unit generates correlation data based on first information corresponding to a first image forming speed and second information corresponding to a second image forming speed. A controller, in a case where the image forming unit forms an image at the second image forming speed, corrects relative positions of the first image and the second image based on the first information in advance and the correlation data.Type: GrantFiled: February 6, 2015Date of Patent: August 28, 2018Assignee: Canon Kabushiki KaishaInventors: Yushi Oka, Shinichi Takata, Hiroshi Matsumoto, Ryou Sakaguchi, Kentaro Tamura, Kazuyuki Iwamoto, Takao Nakajima, Daisuke Aruga
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Patent number: 10025250Abstract: An image forming apparatus capable of performing color misregistration correction at image forming speeds while reducing downtime. Image forming units form images of different colors. The formed images are transferred to an intermediate transfer belt. A pattern sensor detects color misregistration amounts of color patterns formed on the intermediate transfer belt. A CPU causes the image forming units to form first color patterns at a first speed and the pattern sensor to detect first color misregistration amounts, and causes the former to form second color patterns at a second speed different from the first speed and the latter to detect second color misregistration amounts. The CPU determines third color misregistration amounts at a third speed based on the first and second color misregistration amounts. The third speed is different from the first and second speeds.Type: GrantFiled: June 22, 2017Date of Patent: July 17, 2018Assignee: CANON KABUSHIKI KAISHAInventors: Kentaro Tamura, Shinichi Takata, Yushi Oka, Hiroshi Matsumoto, Ryou Sakaguchi
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Publication number: 20180004111Abstract: An image forming apparatus capable of performing color misregistration correction at image forming speeds while reducing downtime. Image forming units form images of different colors. The formed images are transferred to an intermediate transfer belt. A pattern sensor detects color misregistration amounts of color patterns formed on the intermediate transfer belt. A CPU causes the image forming units to form first color patterns at a first speed and the pattern sensor to detect first color misregistration amounts, and causes the former to form second color patterns at a second speed different from the first speed and the latter to detect second color misregistration amounts. The CPU determines third color misregistration amounts at a third speed based on the first and second color misregistration amounts. The third speed is different from the first and second speeds.Type: ApplicationFiled: June 22, 2017Publication date: January 4, 2018Inventors: Kentaro Tamura, Shinichi Takata, Yushi Oka, Hiroshi Matsumoto, Ryou Sakaguchi
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Publication number: 20160327896Abstract: In an image forming apparatus (100) an image forming unit forms a first image of a first color and a second image of a second color. An obtaining unit obtains information related to relative positions of a first measurement image, which formed on an image carrier, of the first color and a second measurement image, which formed on an image carrier, of the second color. A generation unit generates correlation data based on first information corresponding to a first image forming speed and second information corresponding to second information. A controller, in a case where the image forming unit forms an image at the second image forming speed, corrects relative positions of the first image and the second image based on the first information in advance and the correlation data.Type: ApplicationFiled: February 6, 2015Publication date: November 10, 2016Inventors: Yushi Oka, Shinichi Takata, Hiroshi Matsumoto, Ryou Sakaguchi, Kentaro Tamura, Kazuyuki Iwamoto, Takao Nakajima, Daisuke Aruga
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Patent number: 9475663Abstract: An image forming apparatus includes a stacking portion on which a sheet is to be stacked, an image forming unit, a size detection unit, a setting unit, a notification unit, and a control unit. The image forming unit forms an image on a sheet fed from the stacking portion. The size detection unit detects a size of a sheet stacked on the stacking portion. The setting unit sets at least one sheet size to be allowed for use at the image forming apparatus. The notification unit provides notification of information. The control unit causes the notification unit to provide a warning in a case where the size of the sheet detected by the size detection unit is not included in the at least one sheet size set by the setting unit.Type: GrantFiled: January 27, 2015Date of Patent: October 25, 2016Assignee: Canon Kabushiki KaishaInventors: Shinichi Takata, Hiroshi Matsumoto, Yushi Oka, Ryou Sakaguchi, Kentaro Tamura, Shinsuke Ubayashi
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Patent number: 9366984Abstract: An image forming apparatus includes a generation unit configured to generate correlation data indicating a relationship between a relative position of a first image and a second image corresponding to a first speed and a relative position of the first image and the second image corresponding to a second image forming speed; a controller configured to, in a case where a image forming unit forms an image at the second speed, correct a relative position of the first image and the second image based on first information and on correlation data; and a prohibition unit configured to prohibit formation of the measurement image at the second speed in a case where a housing unit does not house a predetermined recording material corresponding to the second speed.Type: GrantFiled: December 28, 2015Date of Patent: June 14, 2016Assignee: Canon Kabushiki KaishaInventors: Yushi Oka, Shinichi Takata, Hiroshi Matsumoto, Ryou Sakaguchi, Kentaro Tamura
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Patent number: 9361551Abstract: An image forming apparatus includes a unit configured to correct a relative position of a first image and a second image, and a controller configured to form a first measurement image in a case where a first condition is satisfied, and to form the first measurement image and a second measurement image in a case where a second condition is satisfied. The controller is further configured to, in a case where the first condition is satisfied, determine whether or not the second condition is satisfied before the first condition is satisfied next, and in a case where the second condition is satisfied before the first condition is satisfied next, cause an image forming unit to form the first measurement image and the second measurement image.Type: GrantFiled: February 24, 2015Date of Patent: June 7, 2016Assignee: Canon Kabushiki KaishaInventors: Yushi Oka, Shinichi Takata, Hiroshi Matsumoto, Ryou Sakaguchi, Kentaro Tamura
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Patent number: 9348298Abstract: An image forming apparatus comprising: an image carrier; an image forming unit configured to form a toner image on the image carrier by using toner, based on image information; a transfer unit configured to transfer the toner image formed on the image carrier to a sheet; a cleaning unit configured to clean toner on the image carrier; a collected toner box in which the toner cleaned by the cleaning unit is collected; a rotating member configured to be rotated for moving the toner in the collected toner box; and a controller configured to control, based on the image information, whether or not to rotate the rotating member.Type: GrantFiled: March 27, 2015Date of Patent: May 24, 2016Assignee: Canon Kabushiki KaishaInventors: Hiroshi Matsumoto, Shinichi Takata, Yushi Oka, Ryou Sakaguchi, Kentaro Tamura, Hiromichi Koseki
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Publication number: 20160109821Abstract: An image forming apparatus includes a generation unit configured to generate correlation data indicating a relationship between a relative position of a first image and a second image corresponding to a first speed and a relative position of the first image and the second image corresponding to a second image forming speed; a controller configured to, in a case where a image forming unit forms an image at the second speed, correct a relative position of the first image and the second image based on first information and on correlation data; and a prohibition unit configured to prohibit formation of the measurement image at the second speed in a case where a housing unit does not house a predetermined recording material corresponding to the second speed.Type: ApplicationFiled: December 28, 2015Publication date: April 21, 2016Inventors: Yushi Oka, Shinichi Takata, Hiroshi Matsumoto, Ryou Sakaguchi, Kentaro Tamura
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Patent number: 9261807Abstract: An image forming apparatus includes a generation unit configured to generate correlation data indicating a relationship between a relative position of a first image and a second image corresponding to a first speed and a relative position of the first image and the second image corresponding to a second image forming speed; a controller configured to, in a case where an image forming unit forms an image at the second speed, correct a relative position of the first image and the second image based on first information and on correlation data; and a prohibition unit configured to prohibit formation of the measurement image at the second speed in a case where a housing unit does not house a predetermined recording material corresponding to the second speed.Type: GrantFiled: February 19, 2015Date of Patent: February 16, 2016Assignee: Canon Kabushiki KaishaInventors: Yushi Oka, Shinichi Takata, Hiroshi Matsumoto, Ryou Sakaguchi, Kentaro Tamura
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Publication number: 20150277346Abstract: An image forming apparatus comprising: an image carrier; an image forming unit configured to form a toner image on the image carrier by using toner, based on image information; a transfer unit configured to transfer the toner image formed on the image carrier to a sheet; a cleaning unit configured to clean toner on the image carrier; a collected toner box in which the toner cleaned by the cleaning unit is collected; a rotating member configured to be rotated for moving the toner in the collected toner box; and a controller configured to control, based on the image information, whether or not to rotate the rotating member.Type: ApplicationFiled: March 27, 2015Publication date: October 1, 2015Inventors: Hiroshi Matsumoto, Shinichi Takata, Yushi Oka, Ryou Sakaguchi, Kentaro Tamura, Hiromichi Koseki
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Publication number: 20150242714Abstract: An image forming apparatus includes a unit configured to correct a relative position of a first image and a second image, and a controller configured to form a first measurement image in a case where a first condition is satisfied, and to form the first measurement image and a second measurement image in a case where a second condition is satisfied. The controller is further configured to, in a case where the first condition is satisfied, determine whether or not the second condition is satisfied before the first condition is satisfied next, and in a case where the second condition is satisfied before the first condition is satisfied next, cause an image forming unit to form the first measurement image and the second measurement image.Type: ApplicationFiled: February 24, 2015Publication date: August 27, 2015Inventors: Yushi OKA, Shinichi TAKATA, Hiroshi MATSUMOTO, Ryou SAKAGUCHI, Kentaro TAMURA
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Publication number: 20150241808Abstract: An image forming apparatus includes: a generation unit configured to generate correlation data indicating a relationship between a relative position of a first image and a second image corresponding to a first speed and a relative position of the first image and the second image corresponding to a second image forming speed; a controller configured to, in a case where a image forming unit forms an image at the second speed, correct a relative position of the first image and the second image based on first information and on correlation data; and a prohibition unit configured to prohibit formation of the measurement image at the second speed in a case where a housing unit does not house a predetermined recording material corresponding to the second speed.Type: ApplicationFiled: February 19, 2015Publication date: August 27, 2015Inventors: Yushi Oka, Shinichi Takata, Hiroshi Matsumoto, Ryou Sakaguchi, Kentaro Tamura
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Publication number: 20150210494Abstract: An image forming apparatus includes a stacking portion on which a sheet is to be stacked, an image forming unit, a size detection unit, a setting unit, a notification unit, and a control unit. The image forming unit forms an image on a sheet fed from the stacking portion. The size detection unit detects a size of a sheet stacked on the stacking portion. The setting unit sets at least one sheet size to be allowed for use at the image forming apparatus. The notification unit provides notification of information. The control unit causes the notification unit to provide a warning in a case where the size of the sheet detected by the size detection unit is not included in the at least one sheet size set by the setting unit.Type: ApplicationFiled: January 27, 2015Publication date: July 30, 2015Inventors: Shinichi Takata, Hiroshi Matsumoto, Yushi Oka, Ryou Sakaguchi, Kentaro Tamura, Shinsuke Ubayashi
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Patent number: 8918058Abstract: A wireless communication apparatus is provided for selecting an optimum frequency even when radio wave conditions have changed. A wireless communication apparatus provided with a frequency selector for selecting an optimum frequency for establishing a link for mutually transmitting and receiving has a transceiver for transmitting radio waves to another wireless communication apparatus and receiving from the other wireless communication apparatus radio waves responding to those transmitted radio waves, a quality analyzer for analyzing communication quality indicating the condition of the link from the received radio waves, and a quality updater for updating the analyzed communication quality on the basis of time elapsed from when the radio waves were received. In addition, the frequency selector selects the optimum frequency on the basis of the updated communication quality.Type: GrantFiled: July 27, 2011Date of Patent: December 23, 2014Assignee: Icom IncorporatedInventor: Shinichi Takata
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Patent number: 8493631Abstract: An image forming apparatus having improved installability and operability. The image forming apparatus has an operation unit thereof disposed on an arm extending from the apparatus and pivotable around a support member in substantially the horizontal direction, and has sensors for detecting the pivot position of the operation unit. An initial-screen setting screen determined based on the pivot position of the operation unit detected by the sensors is displayed on the operation unit.Type: GrantFiled: June 16, 2008Date of Patent: July 23, 2013Assignee: Canon Kabushiki KaishaInventors: Shinichi Takata, Takashi Fujimori, Hiroaki Tomiyasu, Yuichi Yamamoto
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Publication number: 20120149311Abstract: A wireless communication apparatus is provided for selecting an optimum frequency even when radio wave conditions have changed. A wireless communication apparatus provided with a frequency selector for selecting an optimum frequency for establishing a link for mutually transmitting and receiving has a transceiver for transmitting radio waves to another wireless communication apparatus and receiving from the other wireless communication apparatus radio waves responding to those transmitted radio waves, a quality analyzer for analyzing communication quality indicating the condition of the link from the received radio waves, and a quality updater for updating the analyzed communication quality on the basis of time elapsed from when the radio waves were received. In addition, the frequency selector selects the optimum frequency on the basis of the updated communication quality.Type: ApplicationFiled: July 27, 2011Publication date: June 14, 2012Applicant: ICOM INCORPORATEDInventor: Shinichi Takata
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Patent number: 7755779Abstract: When the image forming apparatus shifts to the reduced power consumption mode, the image forming apparatus transmits an agency request command for requesting the server apparatus to respond to a status request, on behalf of the image forming apparatus, and the latest status thereof to the server apparatus. When there is a change in the status of the image forming apparatus in the reduced power consumption mode, the image forming apparatus transmits a changed status thereof to the server apparatus. The server apparatus receives a status request sent from an information processing apparatus connected to the network to the image forming apparatus, on behalf of the image forming apparatus. The server apparatus responds to the information processing apparatus in response to the status request, based on the status received beforehand from the image forming apparatus.Type: GrantFiled: October 8, 2003Date of Patent: July 13, 2010Assignee: Canon Kabushiki KaishaInventors: Shigeo Miura, Kazuki Miyamoto, Takeharu Uchizono, Takahiro Ushiro, Tomoyuki Takeda, Shinichi Takata
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Patent number: 7734201Abstract: This invention provides an image forming apparatus capable of shortening the user's print waiting time as much as possible when it is determined that image adjustment is necessary during the image forming operation, and a control method therefor. To accomplish this, in a color image forming apparatus including a plurality of image forming stations which form toner images with a plurality of toners on the basis of a job, it is discriminated whether adjustment processing is necessary during a continuous image forming operation based on the job. If it is discriminated that adjustment processing is necessary, it is determined whether each of the image forming stations has a non-operating time enough to execute the discriminated adjustment processing during the image forming operation. The image forming station determined to have a non-operating time enough to execute adjustment processing executes the discriminated adjustment processing during the non-operating time.Type: GrantFiled: March 3, 2009Date of Patent: June 8, 2010Assignee: Canon Kabushiki KaishaInventors: Kiyoshi Okamoto, Akihiko Sakai, Shinichi Takata, Yuichiro Maeda
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Patent number: 7711281Abstract: A technique for reducing downtime that accompanies the execution independently of adjustment processing for maintaining image quality and the execution of finishing processing relating to a printing medium. In order to apply the finishing processing to the printing medium in a finishing processing unit, an image forming apparatus to which this technique is applied sets a time between sheets that extends from end of image formation regarding a first sheet of the printing medium to start of image formation regarding a second sheet of the printing medium transported following the first sheet of the printing medium in the image forming unit, and executes adjustment processing, which is for maintaining image quality in the image forming unit, within the set time between sheets.Type: GrantFiled: August 15, 2006Date of Patent: May 4, 2010Assignee: Canon Kabushiki KaishaInventors: Shigemichi Hamano, Junichi Noguchi, Takashi Kanno, Takashi Soya, Shinichi Takata, Kiyoshi Okamoto, Katsuyuki Yamazaki, Tomoichiro Ohta