Patents by Inventor Tetsuya Ohashi

Tetsuya Ohashi 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).

  • Ink tank
    Patent number: 8469498
    Abstract: An ink tank containing ink including a pigment component effectively prevents a problem that an ink having a higher concentration and including a sedimentary pigment is led out, even in a case where the ink tank is left unused on a printing apparatus for a long time. To this end, an ink leading-out port placed in an ink containing chamber, and used to supply the ink to a printing head is located higher than a lowermost portion of the ink containing chamber, and is also formed in an inclined surface inclined to a gravitational direction. Thereby, the sedimentary pigment slides the inclined surface, and thus is settled down in a position away from the ink leading-out port.
    Type: Grant
    Filed: August 28, 2009
    Date of Patent: June 25, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tetsuya Ohashi, Yasuo Kotaki, Ryoji Inoue, Koichi Kubo, Masashi Ogasawara
  • Liquid container
    Patent number: 8388122
    Abstract: A liquid container includes an air-tight liquid-storage chamber or reservoir, a movable member for agitating liquid, and a protrusion portion for supporting the movable member. The movable member and the protrusion portion are disposed in the liquid-storage chamber. The movable member includes a first end that is linearly movable along the protrusion portion and a second end that is free.
    Type: Grant
    Filed: March 22, 2010
    Date of Patent: March 5, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shogo Kawamura, Yasuo Kotaki, Hideki Ogura, Ryoji Inoue, Tetsuya Ohashi
  • Ink jet printing apparatus and ink jet printing method with stir mode for stir operation of ink tank
    Patent number: 8322807
    Abstract: The present invention provides an ink jet printing apparatus and a method for controlling an ink jet printing apparatus which, during a non-print operation excluding a print operation, can stir ink at a required time and to a required level according to the state of the ink in the ink tank. During a non-print operation excluding a print operation accompanied by a reciprocal movement of the carriage, a stir operation is executed to stir the ink in the ink tank by reciprocating the carriage according to a stir mode. As the stir mode, one of different modes is set according to an elapsed time from the previous stir operation.
    Type: Grant
    Filed: June 11, 2007
    Date of Patent: December 4, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventors: Satoshi Seki, Hitoshi Nishikori, Daisaku Ide, Yoshito Mizoguchi, Yasuo Kotaki, Tetsuya Ohashi, Ryoji Inoue
  • Ink tank and printing apparatus
    Patent number: 8205974
    Abstract: An ink tank with a high volume efficiency and a printing apparatus which are capable of completely using up ink stored in the ink tank. A meniscus holding force (Pm1) of a non-compressed portion (22b) of an ink guide member (22) is set higher than an initial ink-storage-portion negative pressure (P1), and lower than a used-up ink-storage-portion negative pressure (P2). In addition, a meniscus holding force (Pm2) caused under compression is set stronger than the used-up ink-storage-portion negative pressure (P2), and weaker than a meniscus holding force (Phf) of a head filter (50).
    Type: Grant
    Filed: October 10, 2008
    Date of Patent: June 26, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hideki Ogura, Yasuo Kotaki, Tetsuya Ohashi, Hitoshi Takada, Koichi Kubo, Ryoji Inoue, Tatsuo Nanjo
  • Porous crystalline saccharide, its preparation and uses
    Patent number: 8188268
    Abstract: An object of the present invention is to provide a crystalline saccharide having novel physical properties, a preparation and uses thereof. The present invention solves the above objects by providing a porous crystalline saccharide having a number of pores, a process for producing the same, comprising the step of keeping hydrous crystalline saccharide at an ambient temperature or higher in an organic solvent for the dehydration, and the use thereof.
    Type: Grant
    Filed: December 25, 2006
    Date of Patent: May 29, 2012
    Assignee: Kabushiki Kaisha Hayashibara Seibutsu Kagaku Kenkyujo
    Inventors: Tetsuya Ohashi, Hajime Aga, Tetsuya Nakada, Toshio Miyake
  • Liquid container
    Patent number: 8167416
    Abstract: A liquid container includes a housing having a supply port leading out liquid contained in the housing, a spring member configured to generate a negative pressure, a flexible member joined to the housing to form a liquid chamber, a plate member disposed between the flexible film and the spring member, a lid member configured to cover the flexible member and secured to the housing, and a rib member movably disposed in a space surrounded by the lid member and the flexible member and configured to regulate the shape of the flexible member and the position of the plate member.
    Type: Grant
    Filed: January 29, 2009
    Date of Patent: May 1, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tetsuya Ohashi, Yasuo Kotaki, Koichi Kubo, Tatsuo Nanjo
  • Anhydrous crystalline ?-maltose, its preparation and uses
    Patent number: 8168779
    Abstract: Objects of the present invention are to provide a novel anhydrous crystalline ?-maltose, its preparation and uses. The present invention attains the above objects by providing an anhydrous crystalline ?-maltose with a melting point of 154 to 159° C.; a process for producing the same, comprising a step of keeping hydrous crystalline ?-maltose in an organic solvent at an ambient temperature or higher for the dehydration; and uses of the same.
    Type: Grant
    Filed: July 5, 2007
    Date of Patent: May 1, 2012
    Assignee: Kabushiki Kaisha Hayashibara Seibutsu Kagaku Kenkyujo
    Inventors: Tetsuya Ohashi, Hajime Aga, Tetsuya Nakada, Toshio Miyake
  • SYNTHESIS OF RARE EARTH METAL EXTRACTANT
    Publication number: 20120004459
    Abstract: A rare earth metal extractant in the form of a dialkyl diglycol amic acid is synthesized by reacting diglycolic anhydride with a dialkylamine in an aprotic polar solvent, with a molar ratio of dialkylamine to diglycolic anhydride being at least 1.0, and removing the aprotic polar solvent.
    Type: Application
    Filed: July 5, 2011
    Publication date: January 5, 2012
    Applicants: NISSIN CHEMICAL INDUSTRY CO., LTD., SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Kazuaki Sakaki, Hiroto Sugahara, Tetsuya Ohashi, Tetsuya Kume, Masahiko Ikka, Hirochika Naganawa, Kojiro Shimojo
  • SYNTHESIS OF RARE EARTH METAL EXTRACTANT
    Publication number: 20120004458
    Abstract: A rare earth metal extractant in the form of a dialkyl diglycol amic acid is synthesized by reacting diglycolic anhydride with a dialkylamine in a synthesis medium. A molar ratio (B/A) of dialkylamine (B) to diglycolic anhydride (A) is at least 1.0. A non-polar or low-polar solvent in which the dialkyl diglycol amic acid is dissolvable is used as the synthesis medium.
    Type: Application
    Filed: July 5, 2011
    Publication date: January 5, 2012
    Applicants: NISSIN CHEMICAL INDUSTRY CO., LTD., SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Kazuaki Sakaki, Hiroto Sugahara, Tetsuya Ohashi, Tetsuya Kume, Masahiko Ikka, Hirochika Naganawa, Kojiro Shimojo
  • Liquid container
    Patent number: 8047641
    Abstract: This invention provides a highly reliable liquid container without degrading a liquid accommodation efficiency or increasing a substantial cost. When the liquid container is impacted, the liquid container can protect against damage the flexible film that forms the liquid accommodation chamber. The recessed portion is provided on the inner surface of the cover member facing the plate material. Provided at the opening of the recessed portion is the shock absorbing sheet that elastically deforms into the recessed portion when the plate member is impacted.
    Type: Grant
    Filed: December 30, 2008
    Date of Patent: November 1, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tatsuo Nanjo, Yasuo Kotaki, Tetsuya Ohashi, Koichi Kubo
  • Liquid storage container
    Patent number: 7954662
    Abstract: A liquid storage container capable of ensuring a sufficient ink storage space and preventing liquid leakage without large variations in liquid pressure even when the container is deformed by an external force during shipping or in operating time. The container includes a protection member positioned outside of a flexible member, and an opening is defined on a plane member arranged in contact with the flexible member so as to face the protection member.
    Type: Grant
    Filed: December 19, 2006
    Date of Patent: June 7, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hideki Ogura, Ryoichi Matsumoto, Tetsuya Ohashi, Shogo Kawamura, Ryoji Inoue
  • Ink container and ink jet recording apparatus
    Patent number: 7950790
    Abstract: An ink container usable for recording heads different in flow rate without being affected by a pigment particle concentration of ink held in an ink supply portion is provided. In correspondence with a size of a filter of a recording head used, ink non-conducting areas are provided to a press-contact member, whereby movement of settled ink remaining in the press-contact member is blocked. As a result, common use of the ink container with respect to the recording heads different in flow rate is realized.
    Type: Grant
    Filed: September 5, 2007
    Date of Patent: May 31, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Koichi Kubo, Yasuo Kotaki, Tetsuya Ohashi, Hitoshi Takada, Ryoji Inoue, Hideki Ogura
  • INK TANK AND PRINTING APPARATUS
    Publication number: 20110096128
    Abstract: An ink tank with a high volume efficiency and a printing apparatus which are capable of completely using up ink stored in the ink tank. A meniscus holding force (Pm1) of a non-compressed portion (22b) of an ink guide member (22) is set higher than an initial ink-storage-portion negative pressure (P1), and lower than a used-up ink-storage-portion negative pressure (P2). In addition, a meniscus holding force (Pm2) caused under compression is set stronger than the used-up ink-storage-portion negative pressure (P2), and weaker than a meniscus holding force (Phf) of a head filter (50).
    Type: Application
    Filed: October 10, 2008
    Publication date: April 28, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Hideki Ogura, Yasuo Kotaki, Tetsuya Ohashi, Hitoshi Takada, Koichi Kubo, Ryoji Inoue, Tatsuo Nanjo
  • Ink jet printing apparatus with ink stirring by carriage reciprocation
    Patent number: 7914101
    Abstract: The present invention provides an ink jet printing apparatus that can print appropriate images by efficiently stirring ink in an ink tank in accordance with its status to homogenize it. When the elapsed time from the end of reciprocation of the carriage is shorter than a specified time, a printing operation is performed after the end of the reciprocation. The number of times that the carriage is reciprocated so as to stir the ink after the printing operation is set in accordance with the number of scans of the carriage during the printing operation.
    Type: Grant
    Filed: May 3, 2007
    Date of Patent: March 29, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tetsuya Ohashi, Yasuo Kotaki, Ryoji Inoue, Yoshito Mizoguchi, Daisaku Ide
  • POROUS CRYSTALLINE SACCHARIDE, ITS PREPARATION AND USES
    Publication number: 20100222569
    Abstract: An object of the present invention is to provide a crystalline saccharide having novel physical properties, a preparation and uses thereof. The present invention solves the above objects by providing a porous crystalline saccharide having a number of pores, a process for producing the same, comprising the step of keeping hydrous crystalline saccharide at an ambient temperature or higher in an organic solvent for the dehydration, and the use thereof.
    Type: Application
    Filed: December 25, 2006
    Publication date: September 2, 2010
    Inventors: Tetsuya Ohashi, Hajime Aga, Tetsuya Nakada, Toshio Miyake
  • Ink jet recording head, liquid storage container and ink jet recording apparatus
    Patent number: 7766452
    Abstract: An ink jet recording head is detachably attached to an ink jet recording apparatus including a carriage operable to reciprocally move and an optical encoder scale. An ink jet recording head, a liquid storage container, or an ink jet recording apparatus includes at least one of a light emitting element configured to emit light to an encoder scale and a light receiving element configured to receive light through the encoder scale.
    Type: Grant
    Filed: May 19, 2008
    Date of Patent: August 3, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventor: Tetsuya Ohashi
  • Liquid container
    Patent number: 7762654
    Abstract: A liquid container includes a housing, a flexible film, a liquid reservoir configured to directly store liquid therein and defined by the housing on one side and the flexible film on the other side, a liquid supply port provided in the liquid reservoir and configured to supply liquid to a recording head, and an overhang protruding from the housing and located in the liquid reservoir and substantially near the liquid supply port. The absorbing member is configured to absorb the inertial force of liquid, the inertial force being generated in liquid in the liquid reservoir by an external force applied to the housing.
    Type: Grant
    Filed: August 29, 2006
    Date of Patent: July 27, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shogo Kawamura, Yasuo Kotani, Hideki Ogura, Ryoji Inoue, Tetsuya Ohashi
  • LIQUID CONTAINER
    Publication number: 20100171801
    Abstract: A liquid container includes an air-tight liquid-storage chamber or reservoir, a movable member for agitating liquid, and a protrusion portion for supporting the movable member. The movable member and the protrusion portion are disposed in the liquid-storage chamber. The movable member includes a first end that is linearly movable along the protrusion portion and a second end that is free.
    Type: Application
    Filed: March 22, 2010
    Publication date: July 8, 2010
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Shogo Kawamura, Yasuo Kotaki, Hideki Ogura, Ryoji Inoue, Tetsuya Ohashi
  • Ink cartridge for printer
    Patent number: D624960
    Type: Grant
    Filed: December 3, 2008
    Date of Patent: October 5, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ryoji Inoue, Naoki Tashiro, Hiroki Nakanishi, Yasuo Kotaki, Tetsuya Ohashi, Koichi Kubo
  • Ink cartridge for printer
    Patent number: D626173
    Type: Grant
    Filed: December 3, 2008
    Date of Patent: October 26, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ryoji Inoue, Naoki Tashiro, Hiroki Nakanishi, Yasuo Kotaki, Tetsuya Ohashi, Koichi Kubo