Patents by Inventor Shokyo Koh
Shokyo Koh 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: 7809299Abstract: The present invention provides an image forming apparatus which, when switching operation from color image forming operation to monochromatic image forming operation, forms a monochromatic image on each of a prescribed number of sheets by stopping a part of the functions of yellow, magenta and cyan image forming sections of the color image forming operation, and thereafter, forms a monochromatic image only with a black-only image forming section, thereby permitting extension of service life of the image forming sections, while improving the productivity.Type: GrantFiled: December 22, 2006Date of Patent: October 5, 2010Assignee: Canon Kabushiki KaishaInventors: Satoru Yamamoto, Eiichi Motoyama, Shokyo Koh, Mitsuhiko Sato, Takashi Fujimori, Hidenori Sunada
-
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
-
Patent number: 7403957Abstract: In an image forming apparatus for forming an image in accordance with control codes stored in a plurality of memory media, when the control codes stored in the plurality of memory media to control the image forming apparatus is rewritten, rewrite execution codes adapted to execute rewrite of the control codes are transferred to predetermined one of the plurality of memory media from an external apparatus, and rewrite of the control codes is performed in accordance with the transferred rewrite execution codes.Type: GrantFiled: November 3, 2004Date of Patent: July 22, 2008Assignee: Canon Kabushiki KaishaInventors: Hideyuki Ikegami, Tokuharu Kaneko, Shokyo Koh, Tsuyoshi Muto
-
Publication number: 20070103702Abstract: The present invention provides an image forming apparatus which, when switching operation from color image forming operation to monochromatic image forming operation, forms a monochromatic image on each of a prescribed number of sheets by stopping a part of the functions of yellow, magenta and cyan image forming sections of the color image forming operation, and thereafter, forms a monochromatic image only with a black-only image forming section, thereby permitting extension of service life of the image forming sections, while improving the productivity.Type: ApplicationFiled: December 22, 2006Publication date: May 10, 2007Applicant: Canon Kabushiki KaishaInventors: SATORU YAMAMOTO, Eiichi Motoyama, Shokyo Koh, Mitsuhiko Sato, Takashi Fujimori, Hidenori Sunada
-
Patent number: 7164873Abstract: The present invention provides an image forming apparatus which, when switching operation from color image forming operation to monochromatic image forming operation, forms a monochromatic image on each of a prescribed number of sheets by stopping a part of the functions of yellow, magenta and cyan image forming sections of the color image forming operation, and thereafter, forms a monochromatic image only with a black-only image forming section, thereby permitting extension of service life of the image forming sections, while improving the productivity.Type: GrantFiled: April 11, 2006Date of Patent: January 16, 2007Assignee: Canon Kabushiki KaishaInventors: Satoru Yamamoto, Eiichi Motoyama, Shokyo Koh, Mitsuhiko Sato, Takashi Fujimori, Hidenori Sunada
-
Publication number: 20060216065Abstract: The present invention provides an image forming apparatus which, when switching operation from color image forming operation to monochromatic image forming operation, forms a monochromatic image on each of a prescribed number of sheets by stopping a part of the functions of yellow, magenta and cyan image forming sections of the color image forming operation, and thereafter, forms a monochromatic image only with a black-only image forming section, thereby permitting extension of service life of the image forming sections, while improving the productivity.Type: ApplicationFiled: April 11, 2006Publication date: September 28, 2006Applicant: Canon Kabushiki KaishaInventors: Satoru Yamamoto, Eiichi Motoyama, Shokyo Koh, Mitsuhiko Sato, Takashi Fujimori, Hidenori Sunada
-
Patent number: 7046938Abstract: The present invention provides an image forming apparatus which, when switching operation from color image forming operation to monochromatic image forming operation, forms a monochromatic image on each of a prescribed number of sheets by stopping a part of the functions of yellow, magenta and cyan image forming sections of the color image forming operation, and thereafter, forms a monochromatic image only with a black-only image forming section, thereby permitting extension of service life of the image forming sections, while improving the productivity.Type: GrantFiled: October 27, 2003Date of Patent: May 16, 2006Assignee: Canon Kabushiki KaishaInventors: Satoru Yamamoto, Eiichi Motoyama, Shokyo Koh, Mitsuhiko Sato, Takashi Fujimori, Hidenori Sunada
-
Patent number: 6985679Abstract: An image forming apparatus including an image forming unit for forming an image on a recording sheet including a special sheet, and a controller for allowing the image forming unit to carry out an image forming sequence which forms an image on the recording sheet, wherein the controller allows the image forming unit to control a cleaning operation of the image forming unit in response to image formation on the special sheet by the image forming unit.Type: GrantFiled: February 4, 2003Date of Patent: January 10, 2006Assignee: Canon Kabushiki KaishaInventors: Shokyo Koh, Eiichi Motoyama, Mitsuhiko Sato, Takashi Fujimori, Hidenori Sunada, Hideyuki Ikegami, Satoru Yamamoto
-
Patent number: 6937829Abstract: There is provided an image forming apparatus capable of setting up a tab sheet mode-operating and configuring environment in which an effective tab sheet mode output can be obtained by simple selecting and designating operations, A designating device designates a type of sequence of tabs of each of tab sheet bundles set in the sheet feed devices such as cassettes 21a-21d and multi manual feed tray 27 etc. A determining device is responsive to a user's instruction for feeding tab sheets and selection of a combination of one of the sheet feed devices and one of the sheet discharge devices such as face-up discharge tray 2 and face-down discharge tray 3, for determining whether a combination of the selected sheet feed device, the selected sheet discharge device, and the type of sequence of tabs of the tab sheet bundle set in the selected sheet feed device is valid or not.Type: GrantFiled: September 22, 2003Date of Patent: August 30, 2005Assignee: Canon Kabushiki KaishaInventors: Mitsuhiko Sato, Eiichi Motoyama, Shokyo Koh, Hideyuki Ikegami
-
Publication number: 20050062984Abstract: In an image forming apparatus for forming an image in accordance with control codes stored in a plurality of memory media, when the control codes stored in the plurality of memory media to control the image forming apparatus is rewritten, rewrite execution codes adapted to execute rewrite of the control codes are transferred to predetermined one of the plurality of memory media from an external apparatus, and rewrite of the control codes is performed in accordance with the transferred rewrite execution codes.Type: ApplicationFiled: November 3, 2004Publication date: March 24, 2005Applicant: CANON KABUSHIKI KAISHAInventors: Hideyuki Ikegami, Tokuharu Kaneko, Shokyo Koh, Tsuyoshi Muto
-
Patent number: 6854000Abstract: In an image forming apparatus for forming an image in accordance with control codes stored in a plurality of memory media, when the control codes stored in the plurality of memory media to control the image forming apparatus is rewritten, rewrite execution codes adapted to execute rewrite of the control codes are transferred to predetermined one of the plurality of memory media from an external apparatus, and rewrite of the control codes is performed in accordance with the transferred rewrite execution codes.Type: GrantFiled: December 18, 1998Date of Patent: February 8, 2005Assignee: Canon Kabushiki KaishaInventors: Hideyuki Ikegami, Tokuharu Kaneko, Shokyo Koh, Tsuyoshi Muto
-
Publication number: 20040155952Abstract: 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: ApplicationFiled: October 1, 2003Publication date: August 12, 2004Inventors: Mitsuhiko Sato, Shokyo Koh, Takashi Fujimori, Hidenori Sunada
-
Publication number: 20040136754Abstract: The present invention provides an image forming apparatus which, when switching operation from color image forming operation to monochromatic image forming operation, forms a monochromatic image on each of a prescribed number of sheets by stopping a part of the functions of yellow, magenta and cyan image forming sections of the color image forming operation, and thereafter, forms a monochromatic image only with a black-only image forming section, thereby permitting extension of service life of the image forming sections, while improving the productivity.Type: ApplicationFiled: October 27, 2003Publication date: July 15, 2004Applicant: Canon Kabushiki KaishaInventors: Satoru Yamamoto, Eiichi Motoyama, Shokyo Koh, Mitsuhiko Sato, Takashi Fujimori, Hidenori Sunada
-
Publication number: 20040136745Abstract: There is provided an image forming apparatus capable of setting up a tab sheet mode-operating and configuring environment in which an effective tab sheet mode output can be obtained by simple selecting and designating operations, A designating device designates a type of sequence of tabs of each of tab sheet bundles set in the sheet feed devices such as cassettes 21a-21d and multi manual feed tray 27 etc. A determining device is responsive to a user's instruction for feeding tab sheets and selection of a combination of one of the sheet feed devices and one of the sheet discharge devices such as face-up discharge tray 2 and face-down discharge tray 3, for determining whether a combination of the selected sheet feed device, the selected sheet discharge device, and the type of sequence of tabs of the tab sheet bundle set in the selected sheet feed device is valid or not.Type: ApplicationFiled: September 22, 2003Publication date: July 15, 2004Inventors: Mitsuhiko Sato, Eiichi Motoyama, Shokyo Koh, Hideyuki Ikegami
-
Patent number: 6751425Abstract: An image forming apparatus includes a fixing unit that performs thermal fixation for a sheet on which a developer has been transferred, and a controller that sets a temperature of the fixing unit at one of a first temperature for fixing a developer expressing a monochrome image on a sheet and a second temperature for fixing developers expressing a color image on a sheet, wherein if a color page is contained in an image forming job, the controller sets the temperature of the fixing unit at the second temperature and starts the image forming job.Type: GrantFiled: November 18, 2002Date of Patent: June 15, 2004Assignee: Canon Kabushiki KaishaInventors: Takashi Fujimori, Eiichi Motoyama, Shokyo Koh, Mitsuhiko Sato
-
Patent number: 6747751Abstract: An image formation apparatus which has a memory for storing plural read images is provided. In the apparatus, setting of a second copy job and image reading are possible even if a first copy job is being executed. Further, even if feeder jam or printer jam occurs in the first copy job when the second copy job is being set, such the jam is displayed at appropriate timing, so that operability of the apparatus can be significantly improved.Type: GrantFiled: April 16, 2002Date of Patent: June 8, 2004Assignee: Canon Kabushiki KaishaInventors: Akinobu Nishikata, Shokyo Koh, Yoshihito Osari
-
Patent number: 6636323Abstract: An image forming apparatus includes an image forming unit for forming images on sheets in the copy mode, the facsimile mode, and the printer mode a plurality of storage units for storing the sheets on which images are formed by the image forming unit, a setting unit for setting storage units which are to store sheets on which images are formed in the respective modes, a detection unit for detecting empty states of the storage units, and a control unit for storing sheets on which images are formed in the facsimile or printer mode in the storage units that are set by the setting unit, and storing sheets on which images are formed in the copy mode in storage units whose empty states are detected by the detection unit independently of the setting state of the setting unit.Type: GrantFiled: June 26, 1996Date of Patent: October 21, 2003Assignee: Canon Kabushiki KaishaInventors: Yoshihiko Suzuki, Akiyoshi Kimura, Yoshiyuki Suzuki, Tadashi Suzuki, Shinichi Nakamura, Minoru Nada, Satoru Kutsuwada, Kenji Kobayashi, Satoshi Kaneko, Shokyo Koh, Norifumi Miyake, Hirohiko Tashiro
-
Patent number: 6624910Abstract: An image forming apparatus for inputting an original image and forming an image on a recording medium, includes an image direction detection unit for detecting the image direction of an original image, and a control unit for controlling image forming device to perform predetermined image forming processing in accordance with the detection result of the image direction detection unit. The image direction detection unit outputs a degree of determination as the detection result of the image direction, and a level for determining whether or not the predetermined image processing is done is set for the degree of determination.Type: GrantFiled: June 13, 2000Date of Patent: September 23, 2003Assignee: Canon Kabushiki KaishaInventors: Shokyo Koh, Toshiaki Yagasaki, Masahiro Funada, Yukari Toda
-
Publication number: 20030156851Abstract: An image forming apparatus including an image forming unit for forming an image on a recording sheet including a special sheet, and a controller for allowing the image forming unit to carry out an image forming sequence which forms an image on the recording sheet, wherein the controller allows the image forming unit to control a cleaning operation of the image forming unit in response to image formation on the special sheet by the image forming unit.Type: ApplicationFiled: February 4, 2003Publication date: August 21, 2003Applicant: Canon Kabushiki KaishaInventors: Shokyo Koh, Eiichi Motoyama, Mitsuhiko Sato, Takashi Fujimori, Hidenori Sunada, Hideyuki Ikegami, Satoru Yamamoto
-
Publication number: 20030095807Abstract: An image forming apparatus includes a fixing unit that performs thermal fixation for a sheet on which a developer has been transferred, and a controller that sets a temperature of the fixing unit at one of a first temperature for fixing a developer expressing a monochrome image on a sheet and a second temperature for fixing developers expressing a color image on a sheet, wherein if a color page is contained in an image forming job, the controller sets the temperature of the fixing unit at the second temperature and starts the image forming job.Type: ApplicationFiled: November 18, 2002Publication date: May 22, 2003Applicant: Canon Kabushiki KaishaInventors: Takashi Fujimori, Eiichi Motoyama, Shokyo Koh, Mitsuhiko Sato