Patents by Inventor Nobuyuki Kuwabara

Nobuyuki Kuwabara 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).

  • Publication number: 20190366706
    Abstract: In a transfer type ink jet recording method, the temperature of an intermediate image in a heating step is not lower than the minimum coat forming temperature of a first resin and is not lower than the glass transition temperature of a second resin, and the temperature of the intermediate image in a transfer step is lower than the glass transition temperature of the first resin and is not lower than the glass transition temperature of the second resin.
    Type: Application
    Filed: August 13, 2019
    Publication date: December 5, 2019
    Inventors: Nobuyuki Kuwabara, Fumihiro Goto
  • Patent number: 10421270
    Abstract: In a transfer type ink jet recording method, the temperature of an intermediate image in a heating step is not lower than the minimum coat forming temperature of a first resin and is not lower than the glass transition temperature of a second resin, and the temperature of the intermediate image in a transfer step is lower than the glass transition temperature of the first resin and is not lower than the glass transition temperature of the second resin.
    Type: Grant
    Filed: April 6, 2018
    Date of Patent: September 24, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Nobuyuki Kuwabara, Fumihiro Goto
  • Publication number: 20180297355
    Abstract: In a transfer type ink jet recording method, the temperature of an intermediate image in a heating step is not lower than the minimum coat forming temperature of a first resin and is not lower than the glass transition temperature of a second resin, and the temperature of the intermediate image in a transfer step is lower than the glass transition temperature of the first resin and is not lower than the glass transition temperature of the second resin.
    Type: Application
    Filed: April 6, 2018
    Publication date: October 18, 2018
    Inventors: Nobuyuki Kuwabara, Fumihiro Goto
  • Patent number: 9656459
    Abstract: An ink jet recording method of transferring onto a recording medium an intermediate image formed on an intermediate transfer member by an ink jet technique to record an image on the recording medium, the method including a pretreatment agent applying step of applying a pretreatment agent onto an intermediate transfer member; an ink applying step of applying an ink by an ink jet technique onto a region of the intermediate transfer member onto which the pretreatment agent is applied, thereby forming an intermediate image; a transfer step of transferring the intermediate image formed on the intermediate transfer member onto a recording medium; and a selection controlling step of controlling selection of execution or non-execution of at least one of the pretreatment agent applying step and the transfer step, based on an amount of the ink applied onto the intermediate transfer member.
    Type: Grant
    Filed: June 21, 2016
    Date of Patent: May 23, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Nobuyuki Kuwabara, Fumihiro Goto, Masaki Nitta, Keiichirou Takeuchi, Kanako Soma, Takao Ogata
  • Publication number: 20170008273
    Abstract: An ink jet recording method of transferring onto a recording medium an intermediate image formed on an intermediate transfer member by an ink jet technique to record an image on the recording medium, the method including a pretreatment agent applying step of applying a pretreatment agent onto an intermediate transfer member; an ink applying step of applying an ink by an ink jet technique onto a region of the intermediate transfer member onto which the pretreatment agent is applied, thereby forming an intermediate image; a transfer step of transferring the intermediate image formed on the intermediate transfer member onto a recording medium; and a selection controlling step of controlling selection of execution or non-execution of at least one of the pretreatment agent applying step and the transfer step, based on an amount of the ink applied onto the intermediate transfer member.
    Type: Application
    Filed: June 21, 2016
    Publication date: January 12, 2017
    Inventors: Nobuyuki Kuwabara, Fumihiro Goto, Masaki Nitta, Keiichirou Takeuchi, Kanako Soma, Takao Ogata
  • Patent number: 8616690
    Abstract: A recording apparatus has: a recording head having a liquid chamber and nozzles; a tank that stores the liquid which is supplied to the recording head; a liquid supply path that supplies the liquid from the tank to the liquid chamber; a supply pump provided on the liquid supply path; a liquid return path that returns the liquid from the liquid chamber to the tank; a return pump provided on the liquid return path; and a control unit that controls the supply pump and the return pump, wherein when the liquid is initially filled into the liquid chamber, the control unit drives the return pump so as to set the liquid chamber into a negative pressure state and subsequently drives the supply pump. The recording apparatus which can fill the liquid at a high speed without raising a pressure of a flow path can be provided.
    Type: Grant
    Filed: December 3, 2009
    Date of Patent: December 31, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Riichi Saito, Noribumi Koitabashi, Osamu Sato, Nobuyuki Kuwabara
  • Patent number: 8491084
    Abstract: An inkjet recording apparatus efficiently recovers defective discharge while reducing the amount of waste ink, acquires position information of a defective discharge nozzle and, based on the position information, determines whether the defective discharge has been caused by a bubble or a dust particle, and selects an ink circulation mode or a wiping mode.
    Type: Grant
    Filed: September 10, 2010
    Date of Patent: July 23, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Osamu Sato, Riichi Saito, Noribumi Koitabashi, Nobuyuki Kuwabara, Tsuyoshi Kanke, Koichiro Nakazawa
  • Patent number: 8382238
    Abstract: During a cleaning operation, the following steps are executed. The steps includes a first step of pressurizing ink in a supply path to overflow the ink from a nozzle, a second step of stopping the pressurization, a third step of executing wiping while the pressurization is stopped and a negative pressure is not applied, and a fourth step of applying a negative pressure to the ink at the nozzle to generate a meniscus.
    Type: Grant
    Filed: June 15, 2010
    Date of Patent: February 26, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tsuyoshi Kanke, Riichi Saito, Nobuyuki Kuwabara, Osamu Sato, Noribumi Koitabashi
  • Publication number: 20110063366
    Abstract: An inkjet recording apparatus efficiently recovers defective discharge while reducing the amount of waste ink, acquires position information of a defective discharge nozzle and, based on the position information, determines whether the defective discharge has been caused by a bubble or a dust particle, and selects an ink circulation mode or a wiping mode.
    Type: Application
    Filed: September 10, 2010
    Publication date: March 17, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Osamu Sato, Riichi Saito, Noribumi Koitabashi, Nobuyuki Kuwabara, Tsuyoshi Kanke, Koichiro Nakazawa
  • Publication number: 20100321425
    Abstract: During a cleaning operation, the following steps are executed. The steps includes a first step of pressurizing ink in a supply path to overflow the ink from a nozzle, a second step of stopping the pressurization, a third step of executing wiping while the pressurization is stopped and a negative pressure is not applied, and a fourth step of applying a negative pressure to the ink at the nozzle to generate a meniscus.
    Type: Application
    Filed: June 15, 2010
    Publication date: December 23, 2010
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Tsuyoshi Kanke, Riichi Saito, Nobuyuki Kuwabara, Osamu Sato, Noribumi Koitabashi
  • Publication number: 20100141722
    Abstract: A recording apparatus has: a recording head having a liquid chamber and nozzles; a tank that stores the liquid which is supplied to the recording head; a liquid supply path that supplies the liquid from the tank to the liquid chamber; a supply pump provided on the liquid supply path; a liquid return path that returns the liquid from the liquid chamber to the tank; a return pump provided on the liquid return path; and a control unit that controls the supply pump and the return pump, wherein when the liquid is initially filled into the liquid chamber, the control unit drives the return pump so as to set the liquid chamber into a negative pressure state and subsequently drives the supply pump. The recording apparatus which can fill the liquid at a high speed without raising a pressure of a flow path can be provided.
    Type: Application
    Filed: December 3, 2009
    Publication date: June 10, 2010
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Riichi Saito, Noribumi Koitabashi, Osamu Sato, Nobuyuki Kuwabara
  • Patent number: 7607770
    Abstract: A liquid (ink) supply system having a closed structure with respect to an inkjet recording head is configured such that a gas hindering a recording operation and a liquid supply operation can be rapidly and smoothly eliminated from a liquid supply system without involving any complication in structure. An ink tank (10) and a liquid chamber (50) for leading ink supplied to the recording head (20) are brought into fluid communication via two communication channels (53 and 54). Thus, in the state where the gas exists inside the liquid chamber, the ink is moved from the ink tank (10) via one communication channel (53), while the gas is transferred to the ink tank (10) via the other communication channel (54).
    Type: Grant
    Filed: March 21, 2007
    Date of Patent: October 27, 2009
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ryoji Inoue, Hiroyuki Ishinaga, Nobuyuki Kuwabara, Tetsuya Ohashi, Hideki Ogura
  • Patent number: 7360876
    Abstract: A liquid (ink) supply system having a closed structure with respect to an inkjet recording head is configured such that a gas hindering a recording operation and a liquid supply operation can be rapidly and smoothly eliminated from a liquid supply system without involving any complication in structure. An ink tank (10) and a liquid chamber (50) for leading ink supplied to the recording head (20) are brought into fluid communication via two communication channels (53 and 54). Thus, in the state where the gas exists inside the liquid chamber, the ink is moved from the ink tank (10) via one communication channel (53), while the gas is transferred to the ink tank (10) via the other communication channel (54).
    Type: Grant
    Filed: September 29, 2003
    Date of Patent: April 22, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ryoji Inoue, Hiroyuki Ishinaga, Nobuyuki Kuwabara, Tetsuya Ohashi, Hideki Ogura
  • Publication number: 20070171263
    Abstract: A liquid (ink) supply system having a closed structure with respect to an inkjet recording head is configured such that a gas hindering a recording operation and a liquid supply operation can be rapidly and smoothly eliminated from a liquid supply system without involving any complication in structure. An ink tank (10) and a liquid chamber (50) for leading ink supplied to the recording head (20) are brought into fluid communication via two communication channels (53 and 54). Thus, in the state where the gas exists inside the liquid chamber, the ink is moved from the ink tank (10) via one communication channel (53), while the gas is transferred to the ink tank (10) via the other communication channel (54).
    Type: Application
    Filed: March 21, 2007
    Publication date: July 26, 2007
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Ryoji Inoue, Hiroyuki Ishinaga, Nobuyuki Kuwabara, Tetsuya Ohashi, Hideki Ogura
  • Patent number: 7185976
    Abstract: An ink supply system in which gas is promptly and smoothly discharged without having a complex structure. The ink supply system includes a hermetically-sealed structure communicating with a liquid-using section, a liquid accommodating section having a liquid storage adapted to store liquid, the liquid accomodating section including a negative pressure generation means, and a plurality of communication paths, including first and second communication paths, that facilitates communication between the liquid chamber and the liquid accommodating section. Each of the first and second communication paths includes a liquid chamber side opening extending into the liquid chamber and a liquid accommodating section side opening extending into the liquid accommodating section.
    Type: Grant
    Filed: September 23, 2004
    Date of Patent: March 6, 2007
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ryoji Inoue, Hiroyuki Ishinaga, Hideki Ogura, Nobuyuki Kuwabara, Tetsuya Ohashi
  • Patent number: 7086725
    Abstract: In a structure of an ink tank having a deformable sheet that constitutes the tank and a spring for imparting a negative pressure, unstableness of the negative pressure attributable to the deformation of the sheet as a result of ink consumption is prevented. For this purpose, a plate-like member is joined to a top section of the sheet formed in a convex shape, and the spring for generating the negative pressure in the tank is mounted to the same member. This makes it possible to maintain a high volume ratio of the ink tank and to achieve stableness of the negative pressure by adequately regulating the deformation of the sheet when the sheet is displaced in the direction of retracting toward the interior of the tank as a result of a reduction of the amount of ink in the tank.
    Type: Grant
    Filed: July 15, 2005
    Date of Patent: August 8, 2006
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hideki Ogura, Naoji Otsuka, Hiroyuki Inoue, Hiroyuki Ishinaga, Nobuyuki Kuwabara, Tetsuya Ohashi, Ryoji Inoue
  • Patent number: 7004575
    Abstract: In a configuration having an ink containing portion which is deformable at least in a part thereof, a spring for generating a required negative pressure in the container by exerting a force that expands the deformable part, and an air introducing section for allowing air to be introduced in accordance with an increase in the negative pressure in the container to keep the negative pressure in an adequate range, a one-way valve is used to prevent leakage of ink from a sealed containing space containing ink to the outside and to allow introduction of air into the containing space from the outside. As a result, there is provided an ink tank from which no ink leaks out through the air introducing section thereof in any ambience for use or storage and which can maintain stable negative pressure characteristics regardless of the phase of the consumption of the liquid.
    Type: Grant
    Filed: June 14, 2004
    Date of Patent: February 28, 2006
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ryoji Inoue, Hiroyuki Ishinaga, Nobuyuki Kuwabara, Tetsuya Ohashi, Hideki Ogura
  • Publication number: 20060017787
    Abstract: A liquid (ink) supply system having a closed structure with respect to an inkjet recording head is configured such that a gas hindering a recording operation and a liquid supply operation can be rapidly and smoothly eliminated from a liquid supply system without involving any complication in structure. An ink tank (10) and a liquid chamber (50) for leading ink supplied to the recording head (20) are brought into fluid communication via two communication channels (53 and 54). Thus, in the state where the gas exists inside the liquid chamber, the ink is moved from the ink tank (10) via one communication channel (53), while the gas is transferred to the ink tank (10) via the other communication channel (54).
    Type: Application
    Filed: September 29, 2003
    Publication date: January 26, 2006
    Inventors: Ryoji Inoue, Hiroyuki Ishinaga, Nobuyuki Kuwabara, Tetsuya Ohashi, Hideki Ogura
  • Patent number: 6976753
    Abstract: A liquid container has a movable member which defines a liquid containing space and which is displaced as the liquid is supplied, a valve for allowing a gas to be introduced into the containing space from the outside and for preventing the liquid from being extracted from the containing space to the outside, and an introduction channel for coupling the valve and the containing space to guide the introduced gas into the containing space. An intake port of the introduction channel located on the containing space side is positioned in an upper part of the containing space in an orientation in use. A negative pressure is kept substantially constant to consume the liquid completely. Since the air introduction for keeping the negative pressure at an adequate value is carried out in a region in a gaseous phase in the container, no leakage of ink occurs, and air is reliably introduced.
    Type: Grant
    Filed: December 4, 2003
    Date of Patent: December 20, 2005
    Assignee: Canon Kabushiki Kaisha
    Inventors: Nobuyuki Kuwabara, Hiroyuki Ishinaga, Tetsuya Ohashi, Ryoji Inoue, Hideki Ogura
  • Publication number: 20050264624
    Abstract: In a structure of an ink tank having a deformable sheet that constitutes the tank and a spring for imparting a negative pressure, unstableness of the negative pressure attributable to the deformation of the sheet as a result of ink consumption is prevented. For this purpose, a plate-like member is joined to a top section of the sheet formed in a convex shape, and the spring for generating the negative pressure in the tank is mounted to the same member. This makes it possible to maintain a high volume ratio of the ink tank and to achieve stableness of the negative pressure by adequately regulating the deformation of the sheet when the sheet is displaced in the direction of retracting toward the interior of the tank as a result of a reduction of the amount of ink in the tank.
    Type: Application
    Filed: July 15, 2005
    Publication date: December 1, 2005
    Applicant: Canon Kabushiki Kaisha
    Inventors: Hideki Ogura, Naoji Otsuka, Hiroyuki Inoue, Hiroyuki Ishinaga, Nobuyuki Kuwabara, Tetsuya Ohashi, Ryoji Inoue