Patents by Inventor Toshimitsu Danzuka

Toshimitsu Danzuka 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: 9669642
    Abstract: An ink jet recording apparatus includes a recording head ejecting ink; a buffer tank temporarily storing the ink; a mounting unit to which a main tank that stores the ink is capable of being mounted, the main tank having a first supply port from which the ink is supplied to the recording head and a second supply port from which the ink is supplied to the buffer tank; a first detecting unit detecting an ink volume in the main tank; and a control unit performing a discharge operation to discharge the ink in the buffer tank from the recording head via the main tank in a pre-transportation process in the ink jet recording apparatus. The control unit prompts a user to replace the main tank without performing the discharge operation if the ink volume detected by the first detecting unit is smaller than a threshold value.
    Type: Grant
    Filed: May 17, 2016
    Date of Patent: June 6, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshimitsu Danzuka, Masaya Uetsuki, Kazuo Suzuki, Yoshinori Nakagawa, Masataka Kato, Tsuyoshi Ibe, Shin Genta, Tomoki Yamamuro
  • Patent number: 9662886
    Abstract: A printer according to this invention includes a print head, a carriage, a recovery unit, and a controller. The controller causes a recovery operation to be performed based on a total value of two values. Assuming that front and rear arrays of discharge port arrays during outbound movement of the carriage are defined as first and second arrays, respectively, the first value is obtained by multiplying a sum of an amount of ink discharged from the first array during outbound movement of the carriage and an amount of ink discharged from the second array during homebound movement of the carriage by a first coefficient, and the second value is obtained by multiplying a sum of an amount of ink discharged from the second array during outbound movement of the carriage and an amount of ink discharged from the first array during homebound movement of the carriage by a second coefficient.
    Type: Grant
    Filed: March 25, 2016
    Date of Patent: May 30, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shin Genta, Masaya Uetsuki, Toshimitsu Danzuka, Kazuo Suzuki, Masataka Kato, Tsuyoshi Ibe, Asako Tomida
  • Patent number: 9604465
    Abstract: A recording apparatus includes a recording head, a sub tank, an ink tank containing ink supplied to the sub tank, a detector that detects an amount of ink contained in the sub tank, a variable volume member provided between the recording head and the sub tank and having variable inner volume, and a controller that repeatedly performs first and second operations, thereby supplying ink from the ink tank to the sub tank. In the first operation, the member is caused to switch from a first state to a second state, while in the second operation, the member is caused to switch from the second state to the first state.
    Type: Grant
    Filed: May 18, 2016
    Date of Patent: March 28, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuo Suzuki, Masaya Uetsuki, Toshimitsu Danzuka, Masataka Kato, Tsuyoshi Ibe, Asako Tomida, Shin Genta
  • Patent number: 9586398
    Abstract: An ink jet recording apparatus is capable of suppressing an increase of waste ink while solving an increase in density of ink within a supply tube. An ink jet recording apparatus according to the present invention includes a recording head configured to discharge ink, a tank configured to store ink, a supply tube configured to supply ink to the recording head from the tank, a discharge unit configured to execute a discharge operation for discharging ink within the supply tuber a control unit configured to make the discharge unit execute a discharge operation when an elapsed time from a previous discharge operation is greater than a predetermined time, and a changing unit configured to change at least any one of the elapsed time or the predetermined time based on an ink consumption amount consumed through the recording head after the previous discharge operation.
    Type: Grant
    Filed: March 17, 2016
    Date of Patent: March 7, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masataka Kato, Masaya Uetsuki, Toshimitsu Danzuka, Kazuo Suzuki, Tsuyoshi Ibe, Shin Genta, Asako Tomida
  • Patent number: 9561658
    Abstract: The present invention provided a printing apparatus including: an ink storage section; a detection unit detecting an ink remaining amount of the section; a printhead; an air communication section communicating with the section and air; a suction unit; and a control unit. When a predetermined transport-preparation condition regarding transport of the printing apparatus is satisfied, the control unit saves information about the ink remaining amount detected by the detection unit and controls the suction unit to drain ink in the air communication section through the printhead. When a predetermined start-up condition is satisfied, the control unit controls, based on the information, the suction unit to suck ink from the printhead.
    Type: Grant
    Filed: August 11, 2014
    Date of Patent: February 7, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Toshimitsu Danzuka, Masaya Uetsuki, Masataka Kato, Tsuyoshi Ibe, Asako Tomida, Hiroaki Komatsu
  • Publication number: 20160347078
    Abstract: An inkjet printing apparatus includes a printhead, a subtank for storing ink to be supplied to the printhead, a maintank for storing ink to be supplied to the subtank, a valve that can be switched between an open state in which the printhead communicates with the subtank and a closed state in which the printhead does not communicate with the subtank, a cap for covering an discharging port surface of the printhead, a pump for generating a negative pressure in an inside of the cap with the cap covering the discharging port surface, and an internal pressure changing member for changing an internal pressure of the subtank to perform a subtank filling operation in which ink is supplied from maintank to the subtank.
    Type: Application
    Filed: May 18, 2016
    Publication date: December 1, 2016
    Inventors: Masataka Kato, Kazuo Suzuki, Masaya Uetsuki, Toshimitsu Danzuka, Tsuyoshi Ibe, Shin Genta, Tomoki Yamamuro
  • Publication number: 20160347069
    Abstract: Provided is an inkjet printing apparatus capable of performing preliminary discharge without the influence of mist while suppressing degradation in throughput regardless of a preliminary discharge time. Specifically, an inkjet printing apparatus that performs a wiping operation on a nozzle arrangement surface provided with nozzles discharging an ink in a print head includes a wiping determination unit that determines whether to perform the wiping operation before preliminary discharge based on the amount of the preliminary discharge to be performed.
    Type: Application
    Filed: May 25, 2016
    Publication date: December 1, 2016
    Inventors: Shin Genta, Masaya Uetsuki, Toshimitsu Danzuka, Kazuo Suzuki, Yoshinori Nakagawa, Masataka Kato, Tsuyoshi Ibe, Tomoki Yamamuro
  • Publication number: 20160347079
    Abstract: A recording apparatus includes a recording head, a sub tank, an ink tank containing ink supplied to the sub tank, a detector that detects an amount of ink contained in the sub tank, a variable volume member provided between the recording head and the sub tank and having variable inner volume, and a controller that repeatedly performs first and second operations, thereby supplying ink from the ink tank to the sub tank. In the first operation, the member is caused to switch from a first state to a second state, while in the second operation, the member is caused to switch from the second state to the first state.
    Type: Application
    Filed: May 18, 2016
    Publication date: December 1, 2016
    Inventors: Kazuo Suzuki, Masaya Uetsuki, Toshimitsu Danzuka, Masataka Kato, Tsuyoshi Ibe, Asako Tomida, Shin Genta
  • Publication number: 20160339727
    Abstract: An ink jet recording apparatus includes a recording head ejecting ink; a buffer tank temporarily storing the ink; a mounting unit to which a main tank that stores the ink is capable of being mounted, the main tank having a first supply port from which the ink is supplied to the recording head and a second supply port from which the ink is supplied to the buffer tank; a first detecting unit detecting an ink volume in the main tank; and a control unit performing a discharge operation to discharge the ink in the buffer tank from the recording head via the main tank in a pre-transportation process in the ink jet recording apparatus. The control unit prompts a user to replace the main tank without performing the discharge operation if the ink volume detected by the first detecting unit is smaller than a threshold value.
    Type: Application
    Filed: May 17, 2016
    Publication date: November 24, 2016
    Inventors: Toshimitsu Danzuka, Masaya Uetsuki, Kazuo Suzuki, Yoshinori Nakagawa, Masataka Kato, Tsuyoshi Ibe, Shin Genta, Tomoki Yamamuro
  • Publication number: 20160339708
    Abstract: A recording device including a recording head, a tank, a valve capable of being switched between an open state where ink is supplied from the tank to the recording head and a closed state where the ink is not supplied, a cap covering a discharge port surface, a pump configured to make a pressure of an inside of the cap negative, an acquiring unit configured to acquire information on an atmospheric pressure of an environment where the recording device is placed, and a control unit configured to perform a suction operation of sucking the ink from the discharge port surface by driving the pump when the valve is in the closed state, making the pressure of the inside of the cap negative, and then switching the valve to the open state and to control the suction operation based on the acquired information.
    Type: Application
    Filed: May 17, 2016
    Publication date: November 24, 2016
    Inventors: Shin Genta, Masaya Uetsuki, Toshimitsu Danzuka, Kazuo Suzuki, Yoshinori Nakagawa, Masataka Kato, Tsuyoshi Ibe, Tomoki Yamamuro
  • Publication number: 20160303857
    Abstract: A printer according to this invention includes a print head, a carriage, a recovery unit, and a controller. The controller causes a recovery operation to be performed based on a total value of two values. Assuming that front and rear arrays of discharge port arrays during outbound movement of the carriage are defined as first and second arrays, respectively, the first value is obtained by multiplying a sum of an amount of ink discharged from the first array during outbound movement of the carriage and an amount of ink discharged from the second array during homebound movement of the carriage by a first coefficient, and the second value is obtained by multiplying a sum of an amount of ink discharged from the second array during outbound movement of the carriage and an amount of ink discharged from the first array during homebound movement of the carriage by a second coefficient.
    Type: Application
    Filed: March 25, 2016
    Publication date: October 20, 2016
    Inventors: Shin Genta, Masaya Uetsuki, Toshimitsu Danzuka, Kazuo Suzuki, Masataka Kato, Tsuyoshi Ibe, Asako Tomida
  • Publication number: 20160288519
    Abstract: An inkjet recording apparatus includes a first ink tank that contains ink, a second ink tank that contains ink supplied from the first ink tank, a communication unit, having conductivity, communicates between the first ink tank and the second ink tank, an opening provided at one end of the communication unit connected to the second ink tank and opening to the second ink tank, an electrode portion provided in the second ink tank, of which a lower end position is located at or above a lower end position of the one end of the communication unit and at or below a highest position of the opening, and a detecting unit that detects an ink amount in the second ink tank in accordance with electrical properties between the electrode portion and the communication unit.
    Type: Application
    Filed: March 29, 2016
    Publication date: October 6, 2016
    Inventors: Toshimitsu Danzuka, Masaya Uetsuki, Kazuo Suzuki, Masataka Kato, Tsuyoshi Ibe, Asako Tomida, Shin Genta
  • Publication number: 20160271942
    Abstract: An ink jet recording apparatus is capable of suppressing an increase of waste ink while solving an increase in density of ink within a supply tube. An ink jet recording apparatus according to the present invention includes a recording head configured to discharge ink, a tank configured to store ink, a supply tube configured to supply ink to the recording head from the tank, a discharge unit configured to execute a discharge operation for discharging ink within the supply tube, a control unit configured to make the discharge unit execute a discharge operation when an elapsed time from a previous discharge operation is greater than a predetermined time, and a changing unit configured to change at least any one of the elapsed time or the predetermined time based on an ink consumption amount consumed through the recording head after the previous discharge operation.
    Type: Application
    Filed: March 17, 2016
    Publication date: September 22, 2016
    Inventors: Masataka Kato, Masaya Uetsuki, Toshimitsu Danzuka, Kazuo Suzuki, Tsuyoshi Ibe, Shin Genta, Asako Tomida
  • Publication number: 20160243834
    Abstract: Mist generated in an inkjet printing are efficiently collected. Specifically in a mist collection operation at the maintenance, a fan is rotated in a rotating speed larger than a rotating speed of the fan at the time of the mist collection operation at the printing time.
    Type: Application
    Filed: February 10, 2016
    Publication date: August 25, 2016
    Inventors: Yoshinori Nakagawa, Masaya Uetsuki, Toshimitsu Danzuka, Kazuo Suzuki, Masataka Kato, Tsuyoshi Ibe, Shin Genta, Tomoki Yamamuro
  • Patent number: 9289996
    Abstract: An inkjet recording apparatus that suppresses temperature rising of a recording head to decrease standby time when the recording head is high in temperature, thereby reducing a drop in recording speed and degradation in image quality. The inkjet recording apparatus includes a recording head configured to have a discharge port surface in which a discharge port for discharging ink is formed, a temperature sensor configured to detect temperature of the recording head, and a cleaning unit configured to make contact with the recording head to clean the discharge port surface. The inkjet recording apparatus controls whether to make the cleaning unit contact the discharge port surface based on the recording head temperature detected by the temperature sensor.
    Type: Grant
    Filed: December 30, 2011
    Date of Patent: March 22, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuo Suzuki, Masaya Uetsuki, Toshimitsu Danzuka, Masataka Kato, Tsuyoshi Ibe, Asako Tomida, Hiroaki Komatsu
  • Patent number: 9266334
    Abstract: While a wiping operation for keeping a satisfactory ejection opening surface of an inkjet recording head is performed, a usage amount of a sheet-like member is to be reduced. An inkjet recording apparatus includes a recording head, a sheet-like member, a reeling roller that reels the sheet-like member 31, and a measurement unit that measures an ejection number of ink ejected from the recording head. A control is performs to cause the reeling roller 32 to reel the sheet-like member 31 in accordance with the ejection number of the ink which is measured by the measurement unit.
    Type: Grant
    Filed: May 12, 2014
    Date of Patent: February 23, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tsuyoshi Ibe, Masaya Uetsuki, Toshimitsu Danzuka, Masataka Kato, Asako Tomida, Hiroaki Komatsu
  • Patent number: 9162462
    Abstract: An embodiment of the present invention provides a wiping method capable of preventing a problem such as color mixing or a discharge failure in a wiping operation during the reciprocating motion of a carriage. According to the embodiment, one or a plurality of orifice arrays out of a plurality of orifice arrays included in a printhead are wiped by making a sheet-like wiping member contact to the orifice surface of the printhead. After that, the wiping member is separated from the orifice surface of the printhead, and the used wiping member is wound. Then, the wiping member is made to contact to the orifice surface of the printhead again, and the next one or more orifice arrays are wiped.
    Type: Grant
    Filed: January 24, 2014
    Date of Patent: October 20, 2015
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Hiroaki Komatsu, Masaya Uetsuki, Kazuo Suzuki, Toshimitsu Danzuka, Masataka Kato, Tsuyoshi Ibe, Asako Tomida
  • Patent number: 9139008
    Abstract: An inkjet recording apparatus includes a recording head including a discharge port, a carriage configured to perform reciprocating scanning with the recording head mounted thereon, a main tank configured to store ink, a sub-tank configured to be supplied with ink from the main tank via a tube, a supply tube configured to connect the recording head and the sub-tank, and a control unit configured to control the carriage, wherein the control unit controls acceleration of the carriage such that a dynamic pressure of ink inside the supply tube becomes greater than a pressure resistance to an ink movement and a pressure resistance to an air movement in the tube.
    Type: Grant
    Filed: April 23, 2013
    Date of Patent: September 22, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroaki Komatsu, Masaya Uetsuki, Toshimitsu Danzuka, Taku Yokozawa, Masataka Kato, Tsuyoshi Ibe, Asako Tomida
  • Patent number: 9126437
    Abstract: In the case where a preliminary discharge operation is always performed at a position that is spaced apart from a recording area, the time taken for a recording head to be moved to a preliminary discharge position is increased, and this results in a decrease in throughput. In the case where it is determined that a leading end or a trailing end of a recording medium is located on a platen, positions at which the distance from an end of a recording medium to a recording head with respect to a moving direction is not smaller than a threshold are determined as preliminary discharge positions, and the recording head is controlled to perform a preliminary discharge operation.
    Type: Grant
    Filed: April 22, 2014
    Date of Patent: September 8, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroaki Komatsu, Masaya Uetsuki, Toshimitsu Danzuka, Masataka Kato, Tsuyoshi Ibe, Asako Tomida
  • Patent number: 9114651
    Abstract: A recording apparatus includes: a recording unit for applying ink on a sheet by a printing head; a drying unit for drying the sheet; a measuring unit for measuring patterns on the sheet; a conveying unit for conveying the sheet; a recovering unit for performing a printing head-recovering operation; and a control unit for controlling the apparatus such that, the recording apparatus performs recording to form patterns, the conveying unit performs first conveying to convey the sheet from a recording region to a drying region, the drying unit performs drying, the conveying unit performs second conveying to convey the sheet from the drying region to a measuring region, and the measuring unit performs measuring, in sequence, wherein the recovering operation is performed at timing at least partially overlapping at least one of the first and second conveying operations, the drying operation, and the color measuring operation, after the recording operation.
    Type: Grant
    Filed: April 5, 2013
    Date of Patent: August 25, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masataka Kato, Tsuyoshi Ibe, Masaya Uetsuki, Toshimitsu Danzuka, Taku Yokozawa, Asako Tomida, Shin Genta, Hiroaki Komatsu