Patents by Inventor Takeshi Kohno

Takeshi Kohno 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: 6712458
    Abstract: A liquid container for an ink jet recording apparatus includes a connection opening connectable with an outside; an elastic member provided in the connection opening, the elastic member being adapted to be penetrated by a cylindrical member for fluid communication with the outside; the elastic member including a compressed region and a substantially non-compressed region in a state without the cylindrical member penetrated, disposed in this order in a direction of insertion of the cylindrical member, wherein the compressed region and the non-compressed region are capable of being compressed when they are penetrated by the cylindrical member.
    Type: Grant
    Filed: February 7, 2002
    Date of Patent: March 30, 2004
    Assignee: Canon Kabushiki Kaisha
    Inventors: Nobuyuki Hatasa, Hajime Yamamoto, Eiichiro Shimizu, Takeshi Kohno, Hiroshi Koshikawa, Tatsuo Nanjo
  • Publication number: 20020122104
    Abstract: A liquid container for an ink jet recording apparatus includes a connection opening connectable with an outside; an elastic member provided in the connection opening, the elastic member being adapted to be penetrated by a cylindrical member for fluid communication with the outside; the elastic member including a compressed region and a substantially non-compressed region in a state without the cylindrical member penetrated, disposed in this order in a direction of insertion of the cylindrical member, wherein the compressed region and the non-compressed region are capable of being compressed when they are penetrated by the cylindrical member.
    Type: Application
    Filed: February 7, 2002
    Publication date: September 5, 2002
    Inventors: Nobuyuki Hatasa, Hajime Yamamoto, Eiichiro Shimizu, Takeshi Kohno, Hiroshi Koshikawa, Tatsuo Nanjo
  • Patent number: 6419341
    Abstract: Printer performs accurate ink-discharge status detection, dependent upon the type of a printhead attached to the printer, the print mode and the color of ink change, and a facsimile apparatus using the printer. Each time printing based on received facsimile image data for one page of print sheet has been completed, the printhead is moved to a position close to a photosensor, and test ink discharge is performed. At this time, the type of printhead is determined, and whether or not the color printhead is in normally-dischargeable status is judged by comparing a pulsewidth obtained from output from the photosensor with a threshold value selected in accordance with the discrimination result. Otherwise, one of a plurality of threshold values according to print modes and ink colors is read from a ROM, and test ink discharge is performed with respect to corresponding color ink. The result of the discharge is compared with the threshold value.
    Type: Grant
    Filed: April 28, 2000
    Date of Patent: July 16, 2002
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yukio Nohata, Atsushi Saito, Takeshi Kohno, Takashi Ono, Shinichiro Kohri, Shigeyuki Sugiyama
  • Patent number: 6312086
    Abstract: An ink jet recording apparatus for recording on a recording medium by using an ink jet recording head for discharging ink includes a conveying device for conveying the recording medium, the conveying device defining a conveyance path through which the recording medium is conveyed, a carriage for reciprocally moving the ink jet recording head across the conveyance path, a recovery device for recovering and/or for maintaining a discharge function of the ink jet recording head, and an ink detecting device for detecting ink discharged from the ink jet recording head, wherein the conveyance path is disposed between the recovery device and the ink detecting device.
    Type: Grant
    Filed: June 28, 1996
    Date of Patent: November 6, 2001
    Assignee: Canon Kabushiki Kaisha
    Inventors: Atsushi Saito, Takeshi Kohno, Takashi Ono, Shinichiro Kohri, Yukio Nohata, Shigeyuki Sugiyama
  • Patent number: 6247784
    Abstract: An ink jet recording system for performing recording by scanning a carriage having an ink jet recording cartridge, at least a part of which is removably mounted to said carriage, scans a carriage along a path that has a waiting position wherein access to the cartridge is inhibited and has a replacement position wherein the removably mounted part of the cartridge can be easily accessed, and in response to a cartridge replacement signal, moves the carriage to the replacement position. When the cartridge has been replaced, the carriage is returned to the waiting position.
    Type: Grant
    Filed: September 6, 1996
    Date of Patent: June 19, 2001
    Assignee: Canon Kabushiki Kaisha
    Inventors: Katsumi Obana, Atsushi Saito, Keizo Sasai, Masanori Momose, Hiroshi Ogushi, Takeshi Kohno, Fumihiko Nakamura, Shinichiro Kohri, Naomi Nakamura, Takayuki Nishinohara, Yasushi Morimoto
  • Patent number: 6130682
    Abstract: An ink jet recording apparatus has a recording mode in which recording is performed by selectively discharging black ink and color inks of colors other than black. Any abnormality in the state of discharge of the ink is performed by executing a test discharging operation. When the recording apparatus functions as a facsimile apparatus, the test discharging operation is conducted by discharging only the black ink, without discharging inks of other colors. Wasteful consumption of ink is diminished, so that the running cost of the ink jet recording apparatus is reduced.
    Type: Grant
    Filed: June 20, 1996
    Date of Patent: October 10, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takeshi Kohno, Atsushi Saito, Keizo Sasai, Hiroshi Ogushi, Fumihiko Nakamura, Katsumi Obana, Takayuki Nishinohara
  • Patent number: 6082847
    Abstract: An image recording apparatus is capable of mounting a replaceable monochromatic recording head or color recording head and has a function to discriminate a type of the recording head mounted on a carriage. When a facsimile mode is selected and the mounted recording head is discriminated as the color recording head, a display is made on a display of a console panel to indicate the exchange of the recording head to the monochromatic recording head.
    Type: Grant
    Filed: August 30, 1996
    Date of Patent: July 4, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takayuki Nishinohara, Atsushi Saito, Keizo Sasai, Hiroshi Ogushi, Takeshi Kohno, Takashi Ono, Fumihiko Nakamura, Katsumi Obana
  • Patent number: 6056386
    Abstract: Printer performs accurate ink-discharge status detection, dependent upon the type of a printhead attached to the printer, the print mode and the color of ink change, and a facsimile apparatus using the printer. Each time printing based on received facsimile image data for one page of print sheet has been completed, the printhead is moved to a position close to a photosensor, and test ink discharge is performed. At this time, the type of printhead is determined, and whether or not the color printhead is in normally-dischargeable status is judged by comparing a pulsewidth obtained from output from the photosensor with a threshold value selected in accordance with the discrimination result. Otherwise, one of a plurality of threshold values according to print modes and ink colors is read from a ROM, and test ink discharge is performed with respect to corresponding color ink. The result of the discharge is compared with the threshold value.
    Type: Grant
    Filed: October 1, 1996
    Date of Patent: May 2, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yukio Nohata, Atsushi Saito, Takeshi Kohno, Takashi Ono, Shinichiro Kohri, Shigeyuki Sugiyama
  • Patent number: 6048045
    Abstract: A printer which can perform color printing by using a plurality of color ink, and if some color ink is exhausted, prevents wasteful consumption of other color ink, and a facsimile apparatus, using the printer, which enables to confirm whether or not printing based on received facsimile image data using ink has been normally performed. In a case where printing is performed based on print data from an external computer, printhead 5 is moved to a position opposite to photosensor 8, and test ink discharge is performed with regard to all the plurality of color ink prior to print operation. If it is judged that even one of the plurality of color ink is exhausted, print operation is not performed. In case of printing based on facsimile reception image data, test ink discharge is performed after the print operation. If it is judged that ink is exhausted, received image data is stored into an image memory.
    Type: Grant
    Filed: October 1, 1996
    Date of Patent: April 11, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yukio Nohata, Atsushi Saito, Takeshi Kohno, Takashi Ono, Shinichiro Kohri, Shigeyuki Sugiyama
  • Patent number: 5920743
    Abstract: A sheet feeding apparatus includes a guiding path for guiding a sheet, a detector for detecting the presence/absence of the sheet in the guiding path, a power-supply switch for turning on and off a power supply, and a determination device for determination whether the sheet comprises a rolled sheet or a cut sheet according to whether the detector detects or does not detect the sheet, respectively, when the power-supply switch has been turned on. A rolled sheet holder for holding the rolled sheet and covering an insertion port for leading the cut sheet or the rolled sheet to a feeding device.
    Type: Grant
    Filed: August 1, 1997
    Date of Patent: July 6, 1999
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masakatsu Yamada, Minoru Yokoyama, Takeshi Kohno
  • Patent number: 5701547
    Abstract: A sheet feeding apparatus includes a guiding path for guiding a sheet, a detector for detecting the presence/absence of the sheet in the guiding path, a power-supply switch for turning on and off a power supply, and a determination device for determining whether the sheet comprises a rolled sheet or a cut sheet according to whether the detector detects or does not detect the sheet, respectively, when the power-supply switch has been turned on.
    Type: Grant
    Filed: June 26, 1996
    Date of Patent: December 23, 1997
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masakatsu Yamada, Minoru Yokoyama, Takeshi Kohno
  • Patent number: 5552902
    Abstract: A facsimile apparatus having an original conveying mechanism, a recording mechanism and a paper feeding mechanism each of which need not be provided with its own drive motor. Cost, size and weight are reduced by providing the minimum required number of motors. To this end, the facsimile apparatus is provided with a reading unit for reading an image of an original, an original conveying mechanism for conveying the original to the reading unit, a recording unit for recording a prescribed image on a recording sheet, a recording-sheet conveying unit for conveying the recording sheet to the recording unit and control means for selectively driving the original conveying mechanism and the recording-sheet conveying mechanism in prescribed fashion by a common drive motor, thereby conveying the original and the recording sheet.
    Type: Grant
    Filed: February 9, 1996
    Date of Patent: September 3, 1996
    Assignee: Canon Kabushiki Kaisha
    Inventor: Takeshi Kohno
  • Patent number: 5461714
    Abstract: A program synthesis system comprises a function decomposition unit for decomposing a function according to a predetermined specification so as to obtain detailed functions of the specification, a similarity decision unit for retrieving intermediates similar to the detailed specification detailed by the function decomposition unit, a design process fusion unit for fusing a plurality of design processes, the design process fusion unit including a matching decision unit for deciding matching between design processes having high similarities with respect to the intermediate decided by the similarity decision unit, an object synthesis unit for synthesizing an object on the basis of a new design process synthesized by the design process fusion unit, a design process intermediate knowledge base for storing intermediates from which intermediates similar to the specification detailed by the function decomposition unit are retrieved, and a design process conversion knowledge base for storing a conversion knowledge for
    Type: Grant
    Filed: July 8, 1994
    Date of Patent: October 24, 1995
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Shinichi Honiden, Takeshi Kohno
  • Patent number: 5422075
    Abstract: The present invention relates to a chemical luminescence-detecting apparatus that is provided with a plurality of optical detectors different in sensitivity in the vicinity of a photometric cell. A ratio of outputs from the optical detectors based on intensity of luminescence is previously determined and stored. Signal processing can multiply an output of a low sensitivity optical detector by a factor determined by the stored ratio to measure the intensity of luminescence so that a conversion value corresponding to an equivalent output from a high sensitivity optical detector may be obtained when the output from the high sensitivity optical detector has become saturated.
    Type: Grant
    Filed: May 27, 1993
    Date of Patent: June 6, 1995
    Assignees: Sankyo Company, Limited, Horiba, Ltd.
    Inventors: Yukio Saito, Koichi Sekiya, Yoshihiro Sato, Takeshi Kohno, Hiroaki Takahasi, Kunio Terada, Takayuki Aoki
  • Patent number: 5353371
    Abstract: A program synthesis system comprises a function decomposition unit for decomposing a function according to a predetermined specification so as to obtain detailed functions of the specification, a similarity decision unit for retrieving intermediates similar to the detailed specification detailed by the function decomposition unit, a design process fusion unit for fusing a plurality of design processes, the design process fusion unit including a matching decision unit for deciding matching between design processes having high similarities with respect to the intermediate decided by the similarity decision unit, an object synthesis unit for synthesizing an object on the basis of a new design process synthesized by the design process fusion unit, a design process intermediate knowledge base for storing intermediates from which intermediates similar to the specification detailed by the function decomposition unit are retrieved, and a design process conversion on knowledge base for storing a conversion knowledge f
    Type: Grant
    Filed: September 23, 1991
    Date of Patent: October 4, 1994
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Shinichi Honiden, Takeshi Kohno
  • Patent number: 5255204
    Abstract: The present invention relates to a method of measuring a concentration of a substance in an enzyme immuno assay system comprised of two optical detectors and a method of calibrating the same. A calibration curve is prepared by the use of the standard samples having known concentrations to be memorized, the standard samples being measured by the two optical detectors, conversion values of outputs from two optical detectors being determined from the resulting measured values, and the calibration curve being corrected on the basis of the conversion values of outputs to establish a new one-piece continuous calibration curve.
    Type: Grant
    Filed: March 13, 1991
    Date of Patent: October 19, 1993
    Assignees: Sankyo Company, Ltd., Horiba, Ltd.
    Inventors: Yukio Saito, Koichi Sekiya, Yoshihiro Sato, Takeshi Kohno, Hiroaki Takahasi, Kenji Yamamoto
  • Patent number: 5182004
    Abstract: An improved flow-through type electrode assembly includes an insulating transparent housing member having a transverse sample liquid passageway. A hollow cylindrical cathode forms a portion of the passageway and is physically displaced from a removable anode member that can be resiliently positioned in the passageway. A series of similar electrode assemblies can be interconnected together.
    Type: Grant
    Filed: November 15, 1989
    Date of Patent: January 26, 1993
    Assignee: Horiba, Ltd.
    Inventor: Takeshi Kohno
  • Patent number: 5136340
    Abstract: A recording apparatus comprising a platen roller for feeding recording sheets, a recording head for recording image on the recording sheets fed by the platen roller and arranged in confronting relation to the platen roller and a guide member for guiding the recording sheet fed by the platen roller. The guide member is arranged at downstream side of a sheet feeding direction with respect to the platen roller and is positioned by abutting it against a portion of the platen roller. With this arrangement, the guide member can easily and precisely positioned with respect to the platen roller without any specific adjustment during assembling the recording apparatus.
    Type: Grant
    Filed: August 26, 1991
    Date of Patent: August 4, 1992
    Assignee: Canon Kabushiki Kaisha
    Inventor: Takeshi Kohno
  • Patent number: 5121050
    Abstract: The present invention is characterized by a solid body disposed so that a remarkably small gap may be formed between it and a surface of an electrode. A super-thin liquid membrane is formed in the small gap by an interfacial tension of a liquid. An object to be measured is applied to or acted upon either the solid body or the super-thin liquid membrane. An electric signal due to the physical properties of the super-thin liquid membrane itself or an electric signal due to a chemical or physical reaction, which is generated on an interface of the solid body and the super-thin liquid membrane and diffused through the super-thin liquid membrane itself, is detected by means of the electrode to measure the physical properties of the object to be measured.
    Type: Grant
    Filed: January 12, 1990
    Date of Patent: June 9, 1992
    Assignee: Horiba, Ltd.
    Inventors: Haruo Kotani, Katsuhiko Tomita, Junji Kojima, Takeshi Kohno
  • Patent number: 4722443
    Abstract: An apparatus for processing paper sheets comprises a batch feeder for carrying the withdrawn paper sheets, a takeout device for picking up the paper sheets from the batch feeder, one by one, an inspection section for inspecting the paper sheets picked up by the takeout device, whereby the paper sheets are classified into two groups, an unmachinable first group and a machinable second group, a first collecting device for collecting the first group of paper sheets, and a judgment unit for classifying the second group of paper sheets into two subgroups, a legitimate third group and a counterfeit fourth group. The first collecting device includes a second collecting device for collecting the third group of paper sheets, and third collecting device for collecting the fourth group of paper sheets.
    Type: Grant
    Filed: April 30, 1986
    Date of Patent: February 2, 1988
    Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
    Inventors: Nobusato Maruyama, Takeshi Kohno, Kazuhito Haruki, Kozo Matsumoto, Toshiyuki Miyano