Patents by Inventor Takashi Fujimori
Takashi Fujimori 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: 7761045Abstract: A belt feeding apparatus includes an endless belt; a supporting member for rotatably supporting said belt; and setting means for setting, when said belt is deviated from a widthwisely normal zone, an inclination angle of said supporting member to a returning angle to return said belt toward the normal zone, and for setting, when said belt is in the normal zone, the inclination angle of said supporting member to a balance angle.Type: GrantFiled: August 22, 2008Date of Patent: July 20, 2010Assignee: Canon Kabushiki KaishaInventors: Takashi Fujimori, Kenji Kuroki, Hiroyuki Eda, Hiroaki Tomiyasu, Hijame Kaji, Junichi Endo, Hidenori Matsumoto
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Patent number: 7751106Abstract: An image forming apparatus that previously rotates a polygonal mirror drive motor before starting a job and forms a latent image by using an optical scanning unit including the polygonal mirror drive motor is provided. The image forming apparatus includes a control unit configured to perform control such that, in the determination of the presence or absence of each of color toners before a previous rotation is started, if it is determined that any one of the color toners is absent, only the polygonal mirror drive motor corresponding to a black toner is previously rotated.Type: GrantFiled: December 17, 2009Date of Patent: July 6, 2010Assignee: Canon Kabushiki KaishaInventors: Takashi Fujimori, Kenji Kuroki, Hiroyuki Eda
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Patent number: 7728994Abstract: An image forming apparatus which enables easy management of proofs in a printing process. An image forming apparatus 299 is provided with a reader unit 50, a transfer charger 220, color sensors 274-1 to 274-4, a printer controlling unit 21. The reader unit 50 inputs image data for forming an image on a sheet having an RFID tag 701. The transfer charger 220 generates a transfer image for forming the image on the sheet based on the inputted image data. The color sensors 274-1 to 274-4 measure image formation conditions of the transfer image. The printer controlling unit 21 writes the measured image formation conditions into the RFID tag 701.Type: GrantFiled: September 13, 2006Date of Patent: June 1, 2010Assignee: Canon Kabushiki KaishaInventors: Takashi Fujimori, Hajime Kaji, Jun Yamaguchi, Takashi Nagaya
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Publication number: 20100092193Abstract: An image forming apparatus that previously rotates a polygonal mirror drive motor before starting a job and forms a latent image by using an optical scanning unit including the polygonal mirror drive motor is provided. The image forming apparatus includes a control unit configured to perform control such that, in the determination of the presence or absence of each of color toners before a previous rotation is started, if it is determined that any one of the color toners is absent, only the polygonal mirror drive motor corresponding to a black toner is previously rotated.Type: ApplicationFiled: December 17, 2009Publication date: April 15, 2010Applicant: CANON KABUSHIKI KAISHAInventors: Takashi Fujimori, Kenji Kuroki, Hiroyuki Eda
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Publication number: 20100091350Abstract: An image forming apparatus that previously rotates a polygonal mirror drive motor before starting a job and forms a latent image by using an optical scanning unit including the polygonal mirror drive motor is provided. The image forming apparatus includes a control unit configured to perform control such that, in the determination of the presence or absence of each of color toners before a previous rotation is started, if it is determined that any one of the color toners is absent, only the polygonal mirror drive motor corresponding to a black toner is previously rotated.Type: ApplicationFiled: December 17, 2009Publication date: April 15, 2010Applicant: CANON KABUSHIKI KAISHAInventors: Takashi Fujimori, Kenji Kuroki, Hiroyuki Eda
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Patent number: 7693431Abstract: An image forming apparatus which is capable of performing a failsafe image forming operation even when a memory device of a replaceable unit mounted thereon is faulty. A controller of the image forming apparatus determines whether or not a memory tag of a toner cartridge is faulty. If the memory tag is determined to be faulty, the controller causes image adjustment to be executed.Type: GrantFiled: December 3, 2007Date of Patent: April 6, 2010Assignee: Canon Kabushiki KaishaInventors: Hiroyuki Eda, Kenji Kuroki, Hiroaki Tomiyasu, Takashi Fujimori, Eiichi Motoyama
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Patent number: 7653337Abstract: An image forming apparatus capable of carrying out color misregistration correction at an appropriate time and providing a high-quality image free from color misregistration. A toner image is formed on the basis of an input image information signal. A width of the toner image is determined on the basis of the input image information signal, before forming the toner image in a predetermined area. The width of the toner image formed in the predetermined area is detected. The detected width of the toner image is compared with the determined width of the toner image. It is judged on the basis of the comparison result whether or not color misregistration is present.Type: GrantFiled: June 13, 2007Date of Patent: January 26, 2010Assignee: Canon Kabushiki KaishaInventors: Yoritsugu Maeda, Takashi Fujimori, Satoru Kanno
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Patent number: 7643190Abstract: An image forming apparatus that previously rotates a polygonal mirror drive motor before starting a job and forms a latent image by using an optical scanning unit including the polygonal mirror drive motor is provided. The image forming apparatus includes a control unit configured to perform control such that, in the determination of the presence or absence of each of color toners before a previous rotation is started, if it is determined that any one of the color toners is absent, only the polygonal mirror drive motor corresponding to a black toner is previously rotated.Type: GrantFiled: April 17, 2007Date of Patent: January 5, 2010Assignee: Canon Kabushiki KaishaInventors: Takashi Fujimori, Kenji Kuroki, Hiroyuki Eda
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Publication number: 20090302522Abstract: A sheet feeding apparatus 80 includes a lifter plate 23 that is disposed in a sheet storage case 4 and stacks a sheet 7a, an air heater 14 and a fan 11 that blow heated air to the sheet 7a stacked on the lifter plate 23, and a control device 16 that changes a control condition of the heated air blown by the air heater 14 and the fan 11 based on a storage period of time of the sheet 7a on the lifter plate 23.Type: ApplicationFiled: June 10, 2009Publication date: December 10, 2009Applicant: CANON KABUSHIKI KAISHAInventors: Takashi Fujimori, Keita Takahashi
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Publication number: 20090295071Abstract: An image forming apparatus including: a informing portion that issues information; a storing portion that stores sheets; a sheet detecting portion that detects presence or absence of the sheets in the storing portion; a determination portion that determines a type of the sheets stored in the storing portion; and a control portion that causes the informing portion to issue a predetermined information in a case where the absence of the sheets is undetected by the sheet detecting portion and a change of the type of the sheets is determined by the determination portion.Type: ApplicationFiled: May 26, 2009Publication date: December 3, 2009Applicant: CANON KABUSHIKI KAISHAInventors: Keita Takahashi, Takashi Fujimori
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Patent number: 7573878Abstract: A system including sub-networks mounted with different kinds of protocols/profiles, a gate way/proxy for connecting the sub-networks, and nodes on the sub-networks, the gateway/proxy being mounted with processing of a physical layer and a data link layer as a protocol of the sub-network and having a common transport layer and a service proxy and a client proxy shared by the sub-networks.Type: GrantFiled: October 23, 2003Date of Patent: August 11, 2009Assignee: NEC Electronics CorporationInventor: Takashi Fujimori
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Publication number: 20080316541Abstract: 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: ApplicationFiled: June 16, 2008Publication date: December 25, 2008Applicant: CANON KABUSHIKI KAISHAInventors: Shinichi Takata, Takashi Fujimori, Hiroaki Tomiyasu, Yuichi Yamamoto
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Publication number: 20080317525Abstract: A belt feeding apparatus includes an endless belt and a supporting member for rotatably supporting the belt. The belt feeding apparatus further includes a setting member for setting, when the belt is deviated from a widthwisely normal zone, an inclination angle of the supporting member to a return angle to return the belt toward the normal zone. The setting member also sets, when a predetermined time elapses from the belt returning to the normal zone, the inclination angle of the supporting member to a balance angle to keep the belt in the zone.Type: ApplicationFiled: August 19, 2008Publication date: December 25, 2008Applicant: CANON KABUSHIKI KAISHAInventors: Kenji Kuroki, Hiroyuki Eda, Takashi Fujimori, Hiroaki Tomiyasu, Hidenori Matsumoto, Junichi Endo, Hajime Kaji
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Publication number: 20080317526Abstract: A belt feeding apparatus includes an endless belt; a supporting member for rotatably supporting said belt; and setting means for setting, when said belt is deviated from a widthwisely normal zone, an inclination angle of said supporting member to a returning angle to return said belt toward the normal zone, and for setting, when said belt is in the normal zone, the inclination angle of said supporting member to a balance angle.Type: ApplicationFiled: August 22, 2008Publication date: December 25, 2008Applicant: CANON KABUSHIKI KAISHAInventors: Takashi Fujimori, Kenji Kuroki, Hiroyuki Eda, Hiroaki Tomiyasu, Hajime Kaji, Junichi Endo, Hidenori Matsumoto
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Patent number: 7430394Abstract: A belt feeding apparatus includes an endless belt and a supporting member for rotatably supporting the belt. A setting member is provided for setting, when the belt is deviated from a widthwisely normal zone, an inclination angle of the supporting member to a returning angle to return the belt toward the normal zone. The setting member also sets, when the belt is in the normal zone, the inclination angle of the supporting member to a balance angle.Type: GrantFiled: March 27, 2007Date of Patent: September 30, 2008Assignee: Canon Kabushiki KaishaInventors: Takashi Fujimori, Kenji Kuroki, Hiroyuki Eda, Hiroaki Tomiyasu, Hajime Kaji, Junichi Endo, Hidenori Matsumoto
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Patent number: 7430393Abstract: A belt feeding apparatus includes an endless belt and a supporting member for rotatably supporting the belt. The belt feeding apparatus further includes a setting member for setting, when the belt is deviated from a widthwisely normal zone, an inclination angle of the supporting member to a return angle to return the belt toward the normal zone, The setting member also sets, when a predetermined time elapses from the belt returning to the normal zone, the inclination angle of the supporting member to a balance angle to keep the belt in the zone.Type: GrantFiled: March 27, 2007Date of Patent: September 30, 2008Assignee: Canon Kabushiki KaishaInventors: Kenji Kuroki, Hiroyuki Eda, Takashi Fujimori, Hiroaki Tomiyasu, Hidenori Matsumoto, Junichi Endo, Hajime Kaji
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Patent number: 7420583Abstract: There is provided an image forming apparatus which is capable of reducing a period of time required for obtaining an image output, in the case of changing the image forming operation from a monochromatic image formation to a color image formation during execution of the image forming operation. A plurality of image forming units form images and overlap images the formed images onto a transfer material. A preparation for image formation is started in a first mode in which image formation is carried out by the plurality of image forming units while image formation is being carried out in a second mode in which image formation is carried out by at least one of the image forming units. The image formation is carried out in the first mode after the image formation in the second mode is completed.Type: GrantFiled: October 1, 2003Date of Patent: September 2, 2008Assignee: Canon Kabushiki KaishaInventors: Mitsuhiko Sato, Shokyo Koh, Takashi Fujimori, Hidenori Sunada
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Patent number: 7403727Abstract: The present invention performs density adjustment (ATR process) and transfer voltage control (ATVC) in parallel; the ATR process transfers and forms a patch image on an intermediate transfer member and detects and adjusts the density of the patch image, and the ATVC gradually raises a transfer voltage to measure a transfer current and generates a transfer voltage corresponding to a target transfer current to control a transfer of an image from an image carrier to the intermediate transfer member. The present invention determines the timing at which the patch image is formed in the density adjustment, in association with the transfer voltage in the transfer voltage control step, to allow a density adjustment process based on density adjustment and transfer voltage control to be executed in parallel.Type: GrantFiled: August 21, 2006Date of Patent: July 22, 2008Assignee: Canon Kabushiki KaishaInventors: Takashi Fujimori, Yoritsugu Maeda, Satoru Kanno
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Publication number: 20080131144Abstract: An image forming apparatus which is capable of performing a failsafe image forming operation even when a memory device of a replaceable unit mounted thereon is faulty. A controller of the image forming apparatus determines whether or not a memory tag of a toner cartridge is faulty. If the memory tag is determined to be faulty, the controller causes image adjustment to be executed.Type: ApplicationFiled: December 3, 2007Publication date: June 5, 2008Applicant: CANON KABUSHIKI KAISHAInventors: Hiroyuki Eda, Kenji Kuroki, Hiroaki Tomiyasu, Takashi Fujimori, Eiichi Motoyama
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Publication number: 20080003029Abstract: A belt feeding apparatus includes an endless belt; a supporting member for rotatably supporting said belt; and setting means for setting, when said belt is deviated from a widthwisely normal zone, an inclination angle of said supporting member to a returning angle to return said belt toward the normal zone, and for setting, when said belt is in the normal zone, the inclination angle of said supporting member to a balance angle.Type: ApplicationFiled: March 27, 2007Publication date: January 3, 2008Applicant: Canon Kabushiki KaishaInventors: Takashi FUJIMORI, Kenji Kuroki, Hiroyuki Eda, Hiroaki Tomiyasu, Hajime Kaji, Junichi Endo, Hidenori Matsumoto