Patents by Inventor Eiji Komamiya
Eiji Komamiya 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).
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Patent number: 11833827Abstract: The present disclosure provides a printing apparatus that is capable of obtaining accurately the amount of a waste liquid discharged from a printing unit. The printing apparatus includes a discharge unit that executes a discharge operation to discharge the liquid from the ejection port of the printing unit. The printing apparatus also includes a determination unit that determines filling states of the liquid in a printing apparatus main body and the printing unit and an obtaining unit that obtains, based on the filling states, a waste liquid amount discharged from the ejection port by the discharge operation.Type: GrantFiled: January 26, 2022Date of Patent: December 5, 2023Assignee: Canon Kabushiki KaishaInventor: Eiji Komamiya
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Publication number: 20230234349Abstract: Provided is a technique capable of obtaining a high-quality image without enhancing the arrangement accuracy of chips in a print head. In the print head, first and second chips respectively having first and second nozzle arrays are arranged. End regions of the first and second nozzle arrays form an overlapping portion (OL) where they overlap in view from a conveyance direction. An image processing apparatus allocates pieces of print data to the nozzles in the first and second nozzle arrays based on an inter-nozzle distance. At this time, the image processing apparatus performs a process of shifting allocation positions of the pieces of print data relative to the nozzles from the allocation positions in a state where the inter-nozzle distance is normal, and changes a distribution process of distributing the pieces of print data to the nozzles in the overlapping portion, according to the inter-nozzle distance.Type: ApplicationFiled: January 18, 2023Publication date: July 27, 2023Inventor: EIJI KOMAMIYA
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Publication number: 20220258478Abstract: The present disclosure provides a printing apparatus that is capable of obtaining accurately the amount of a waste liquid discharged from a printing unit. The printing apparatus includes a discharge unit that executes a discharge operation to discharge the liquid from the ejection port of the printing unit. The printing apparatus also includes a determination unit that determines filling states of the liquid in a printing apparatus main body and the printing unit and an obtaining unit that obtains, based on the filling states, a waste liquid amount discharged from the ejection port by the discharge operation.Type: ApplicationFiled: January 26, 2022Publication date: August 18, 2022Inventor: Eiji Komamiya
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Patent number: 11254123Abstract: A print medium is conveyed in a first direction and a print head is provided with a reference side nozzle array and a plurality of nonreference side nozzle arrays. A relative position displacement amount between a reference printing position of a reference pattern printed by the reference side nozzle array and a nonreference printing position of each of nonreference patterns printed by each of the nonreference side nozzle arrays is detected. Based on a maximum value of a displacement amount of the reference printing position with respect to each of the nonreference printing positions in a direction opposite to the first direction, a first correction value for correcting displacement of the reference printing position is calculated. With reference to the reference printing position after corrected based on the first correction value, a second correction value for correcting displacement is calculated for each of the nonreference printing positions.Type: GrantFiled: August 30, 2019Date of Patent: February 22, 2022Assignee: Canon Kabushiki KaishaInventors: Norihiro Kawatoko, Kentaro Muro, Masashi Hayashi, Eiji Komamiya
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Publication number: 20210122167Abstract: A print medium is conveyed in a first direction and a printing head prints an image on the print medium by using a printable region of the print head that extends in a second direction crossing the first direction. Storing units can feed multiple sorts of print media. Among the multiple sorts of the print media, the print medium to print a check pattern for checking a printing state of the printing head is selected as the print medium to be fed from the corresponding storing unit. The check pattern is printed on the print medium by using a portion of the printable region of the printing head corresponding to a size of the print medium fed from the storing unit.Type: ApplicationFiled: January 5, 2021Publication date: April 29, 2021Inventors: Norihiro Kawatoko, Masashi Hayashi, Junichi Nakagawa, Seiji Abe, Kentaro Muro, Eiji Komamiya
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Patent number: 10987919Abstract: A recording apparatus is provided for determining a relative moving speed between a recording head and a recording medium based on application amount information and power information corresponding to power for driving a heating element. In a case of the power amount in a first amount, the moving speed is determined as a first speed in a case where an application amount is equal to a predetermined amount, and the moving speed is determined as a speed higher than the first speed in a case where the application amount is smaller than the predetermined amount. In a case of the power amount in a second amount smaller than the first amount, the moving speed is determined as a speed higher than the first speed in a case where the application amount is equal to the predetermined amount.Type: GrantFiled: August 23, 2019Date of Patent: April 27, 2021Assignee: Canon Kabushiki KaishaInventors: Kentaro Muro, Masashi Hayashi, Eiji Komamiya
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Patent number: 10974505Abstract: A print head capable of forming dots on a print medium based on print data and a print medium are caused to perform relative movement in a specified direction, and a speed of the relative movement is set according to the number of dots to be formed in an area of a specified size. Whether to set the speed of the relative movement to a first speed is determined according to the number of dots to be formed in an area of a first size on the print medium. Whether to set the speed of the relative movement to a second speed lower than the first speed is determined according to the number of dots to be formed in an area of a second size which is smaller than the area of the first size in the specified direction.Type: GrantFiled: July 9, 2019Date of Patent: April 13, 2021Assignee: Canon Kabushiki KaishaInventors: Tetsuya Edamura, Kentaro Muro, Eiji Komamiya, Masashi Hayashi
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Patent number: 10919314Abstract: A print medium is conveyed in a first direction and a printing head prints an image on the print medium by using a printable region of the print head that extends in a second direction crossing the first direction. Storing units can feed multiple sorts of print media. Among the multiple sorts of the print media, the print medium to print a check pattern for checking a printing state of the printing head is selected as the print medium to be fed from the corresponding storing unit. The check pattern is printed on the print medium by using a portion of the printable region of the printing head corresponding to a size of the print medium fed from the storing unit.Type: GrantFiled: August 26, 2019Date of Patent: February 16, 2021Assignee: CANON KABUSHIKI KAISHAInventors: Norihiro Kawatoko, Masashi Hayashi, Junichi Nakagawa, Seiji Abe, Kentaro Muro, Eiji Komamiya
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Patent number: 10696045Abstract: A recording apparatus includes a recording head, a circulation channel, a concentration acquisition unit, an adjustment unit, and a control unit. The recording head includes a plurality of discharge ports through which ink is discharged and a pressure chamber being in communication with the plurality of discharge ports. The circulation channel is in communication with the pressure chamber to circulate the ink between the pressure chamber and an external portion thereof such that the ink is supplied to and collected from the pressure chamber. The concentration acquisition unit is configured to acquire concentration information about an ink concentration in the circulation channel. The adjustment unit is configured to adjust a timing to discharge the ink based on the concentration information. The control unit is configured to control a recording operation of recording by discharging the ink from the recording head such that the ink is discharged at the adjusted timing.Type: GrantFiled: May 24, 2018Date of Patent: June 30, 2020Assignee: CANON KABUSHIKI KAISHAInventors: Hitoshi Nishikori, Tetsuya Edamura, Masashi Hayashi, Eiji Komamiya, Kentaro Muro
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Publication number: 20200070502Abstract: A recording apparatus is provided for determining a relative moving speed between a recording head and a recording medium based on application amount information and power information corresponding to power for driving a heating element. In a case of the power amount in a first amount, the moving speed is determined as a first speed in a case where an application amount is equal to a predetermined amount, and the moving speed is determined as a speed higher than the first speed in a case where the application amount is smaller than the predetermined amount. In a case of the power amount in a second amount smaller than the first amount, the moving speed is determined as a speed higher than the first speed in a case where the application amount is equal to the predetermined amount.Type: ApplicationFiled: August 23, 2019Publication date: March 5, 2020Inventors: Kentaro Muro, Masashi Hayashi, Eiji Komamiya
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Publication number: 20200070504Abstract: A print medium is conveyed in a first direction and a print head is provided with a reference side nozzle array and a plurality of nonreference side nozzle arrays. A relative position displacement amount between a reference printing position of a reference pattern printed by the reference side nozzle array and a nonreference printing position of each of nonreference patterns printed by each of the nonreference side nozzle arrays is detected. Based on a maximum value of a displacement amount of the reference printing position with respect to each of the nonreference printing positions in a direction opposite to the first direction, a first correction value for correcting displacement of the reference printing position is calculated. With reference to the reference printing position after corrected based on the first correction value, a second correction value for correcting displacement is calculated for each of the nonreference printing positions.Type: ApplicationFiled: August 30, 2019Publication date: March 5, 2020Inventors: Norihiro Kawatoko, Kentaro Muro, Masashi Hayashi, Eiji Komamiya
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Publication number: 20200070541Abstract: A print medium is conveyed in a first direction and a printing head prints an image on the print medium by using a printable region of the print head that extends in a second direction crossing the first direction. Storing units can feed multiple sorts of print media. Among the multiple sorts of the print media, the print medium to print a check pattern for checking a printing state of the printing head is selected as the print medium to be fed from the corresponding storing unit. The check pattern is printed on the print medium by using a portion of the printable region of the printing head corresponding to a size of the print medium fed from the storing unit.Type: ApplicationFiled: August 26, 2019Publication date: March 5, 2020Inventors: Norihiro Kawatoko, Masashi Hayashi, Junichi Nakagawa, Seiji Abe, Kentaro Muro, Eiji Komamiya
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Publication number: 20200023639Abstract: A print head capable of forming dots on a print medium based on print data and a print medium are caused to perform relative movement in a specified direction, and a speed of the relative movement is set according to the number of dots to be formed in an area of a specified size. Whether to set the speed of the relative movement to a first speed is determined according to the number of dots to be formed in an area of a first size on the print medium. Whether to set the speed of the relative movement to a second speed lower than the first speed is determined according to the number of dots to be formed in an area of a second size which is smaller than the area of the first size in the specified direction.Type: ApplicationFiled: July 9, 2019Publication date: January 23, 2020Inventors: Tetsuya Edamura, Kentaro Muro, Eiji Komamiya, Masashi Hayashi
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Patent number: 10434771Abstract: An apparatus includes a recording head including a first discharge port array and a second discharge port array, the first and second discharge port arrays being shifted and arranged in a first direction so that part of the discharge ports arranged at an end portion of the first discharge port array in the first direction and part of the discharge ports arranged at an end potion of the second discharge port array in the first direction are located at the same positions in the first direction. The plurality of discharge ports in each of the first and second discharge port arrays is obliquely arranged at a predetermined tilt with respect to the first direction. Discharge timing is adjusted based on the tilt of the discharge port arrays.Type: GrantFiled: June 15, 2018Date of Patent: October 8, 2019Assignee: CANON KABUSHIKI KAISHAInventors: Norihiro Kawatoko, Kentaro Muro, Masashi Hayashi, Eiji Komamiya, Tetsuya Edamura
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Patent number: 10384444Abstract: A recording apparatus includes a recording head including a plurality of ink discharge ports arranged in a predetermined direction, and a complementing unit configured to, according to discharge defect information identifying a defective discharge port at which a discharge defect has occurred among the plurality of ink discharge ports, determine to cause provision of complementary ink to be conducted from a different discharge port configured to discharge the ink at a different position from the identified defective discharge port, wherein the complementing unit determines to use a discharge port configured to provide the ink at a position on one side that is one of positions adjacent in the predetermined direction to a position at which the at least one discharge port provides the ink as the different discharge port for the discharge port identified as the defective discharge port.Type: GrantFiled: April 4, 2018Date of Patent: August 20, 2019Assignee: Canon Kabushiki KaishaInventors: Eiji Komamiya, Tetsuya Edamura
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Patent number: 10272674Abstract: According to an embodiment of the present disclosure, there is provided a recording apparatus, wherein a quantization pattern is applied to a unit area in an end part area located at a boundary with a central area while being offset so as to correspond to an end part of the quantization pattern.Type: GrantFiled: September 27, 2017Date of Patent: April 30, 2019Assignee: Canon Kabushiki KaishaInventors: Ayako Ohta, Takeshi Yazawa, Hidehiko Kanda, Eiji Komamiya
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Publication number: 20190001669Abstract: An apparatus includes a recording head including a first discharge port array and a second discharge port array, the first and second discharge port arrays being shifted and arranged in a first direction so that part of the discharge ports arranged at an end portion of the first discharge port array in the first direction and part of the discharge ports arranged at an end potion of the second discharge port array in the first direction are located at the same positions in the first direction. The plurality of discharge ports in each of the first and second discharge port arrays is obliquely arranged at a predetermined tilt with respect to the first direction. Discharge timing is adjusted based on the tilt of the discharge port arrays.Type: ApplicationFiled: June 15, 2018Publication date: January 3, 2019Inventors: Norihiro Kawatoko, Kentaro Muro, Masashi Hayashi, Eiji Komamiya, Tetsuya Edamura
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Publication number: 20180354260Abstract: A recording apparatus includes a recording head, a circulation channel, a concentration acquisition unit, an adjustment unit, and a control unit. The recording head includes a plurality of discharge ports through which ink is discharged and a pressure chamber being in communication with the plurality of discharge ports. The circulation channel is in communication with the pressure chamber to circulate the ink between the pressure chamber and an external portion thereof such that the ink is supplied to and collected from the pressure chamber. The concentration acquisition unit is configured to acquire concentration information about an ink concentration in the circulation channel. The adjustment unit is configured to adjust a timing to discharge the ink based on the concentration information. The control unit is configured to control a recording operation of recording by discharging the ink from the recording head such that the ink is discharged at the adjusted timing.Type: ApplicationFiled: May 24, 2018Publication date: December 13, 2018Inventors: Hitoshi Nishikori, Tetsuya Edamura, Masashi Hayashi, Eiji Komamiya, Kentaro Muro
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Patent number: 10127481Abstract: With respect to an area quantized by using an area of part in a quantization pattern and also without using an area of the other part in the quantization pattern in quantized data, a mask pattern part corresponding to the area of the part among mask pattern parts constituted by dividing a mask pattern is applied.Type: GrantFiled: May 24, 2016Date of Patent: November 13, 2018Assignee: CANON KABUSHIKI KAISHAInventors: Hidehiko Kanda, Yutaka Kano, Eiji Komamiya, Takeshi Yazawa, Ayako Ohta
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Publication number: 20180311953Abstract: A recording apparatus includes a recording head including a plurality of ink discharge ports arranged in a predetermined direction, and a complementing unit configured to, according to discharge defect information identifying a defective discharge port at which a discharge defect has occurred among the plurality of ink discharge ports, determine to cause provision of complementary ink to be conducted from a different discharge port configured to discharge the ink at a different position from the identified defective discharge port, wherein the complementing unit determines to use a discharge port configured to provide the ink at a position on one side that is one of positions adjacent in the predetermined direction to a position at which the at least one discharge port provides the ink as the different discharge port for the discharge port identified as the defective discharge port.Type: ApplicationFiled: April 4, 2018Publication date: November 1, 2018Inventors: Eiji Komamiya, Tetsuya Edamura