Patents by Inventor Kazuki Narumi
Kazuki Narumi 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: 10457067Abstract: Each area in a test pattern for performing color shift correction is recorded by a discharge port at an edge portion in many times of scanning and by a discharge port other than the discharge port at the edge portion in fewer times of scanning.Type: GrantFiled: October 26, 2017Date of Patent: October 29, 2019Assignee: CANON KABUSHIKI KAISHAInventors: Naoko Baba, Kazuki Narumi
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Publication number: 20190232671Abstract: According to an embodiment of this invention, an apparatus comprises: a detachable inktank containing ink; a subtank containing the ink supplied from the inktank; a printhead configured to discharge the ink supplied from the subtank; an ink supply path connecting the subtank to the printhead; a valve arranged on the ink supply path; a supply unit configured to supply the ink from the inktank to the subtank by repeatedly opening and closing the valve; a suction unit configured to suck the ink from the printhead; and a control unit configured to control, when the inktank is attached, the supply unit to operate for a predetermined number of times to supply the ink from the inktank to the subtank, and to subsequently control the suction unit to operate to supply the ink from the subtank to the printhead.Type: ApplicationFiled: January 22, 2019Publication date: August 1, 2019Inventors: Toshimitsu Danzuka, Naoaki Wada, Kazuki Narumi, Tomoki Yamamuro, Hiroshi Taira, Akiko Aichi, Noboru Kunimine, Taku Yokozawa, Kazuo Suzuki, Kazuhiko Sato, Masataka Kato, Shin Genta, Hiroto Kango
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Publication number: 20180370239Abstract: An inkjet recording apparatus according to the present disclosure executes a first wiping operation in a case where the count value counted by the count unit is higher than a first threshold value while the recording operation is being performed and execute a second wiping operation when the recording operation completes in a case where the count value counted by the count unit is higher than a second threshold value. The inkjet recording apparatus also executes the second wiping operation when the first wiping operation has been performed while the recording operation is being performed.Type: ApplicationFiled: June 18, 2018Publication date: December 27, 2018Inventors: Hiroshi Taira, Toshimitsu Danzuka, Taku Yokozawa, Noboru Kunimine, Akiko Aichi, Kazuki Narumi, Tomoki Yamamuro, Kazuhiko Sato, Kazuo Suzuki
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Publication number: 20180257380Abstract: An inkjet recording apparatus includes a recording unit, a first ink storage unit, a second ink storage unit, a discharge unit, a first detection unit configured to detect that an amount of the ink stored in the first ink storage unit is below a first predetermined amount, and a second detection unit configured to detect that an amount of the ink stored in the second ink storage unit is below a second predetermined amount. The inkjet recording apparatus further includes a control unit configured to control the discharge operation after the detection by the first detection unit and the detection by the second detection unit based on a detection timing of the first detection unit and a detection timing of the second detection unit.Type: ApplicationFiled: March 6, 2018Publication date: September 13, 2018Inventors: Toshimitsu Danzuka, Taku Yokozawa, Masataka Kato, Akiko Aichi, Shin Genta, Kazuki Narumi
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Publication number: 20180117928Abstract: Each area in a test pattern for performing color shift correction is recorded by a discharge port at an edge portion in many times of scanning and by a discharge port other than the discharge port at the edge portion in fewer times of scanning.Type: ApplicationFiled: October 26, 2017Publication date: May 3, 2018Inventors: Naoko Baba, Kazuki Narumi
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Patent number: 9738088Abstract: A pattern of a first ink is formed on a recording medium using a first nozzle, a difference between smoothness of a surface at an edge portion of the pattern of the first ink in a predetermined direction and smoothness of a peripheral area of the pattern of the first ink on the recording medium is increased by applying another imparting material different from the first ink on the pattern of the first ink and a first adjustment pattern is formed, a second adjustment pattern of a predetermined imparting material is formed on the recording medium using a second nozzle, and a detection unit detects information by measuring specular reflected light when areas respectively including the first and the second adjustment patterns are each irradiated with light.Type: GrantFiled: May 24, 2016Date of Patent: August 22, 2017Assignee: CANON KABUSHIKI KAISHAInventors: Kazuki Narumi, Hiroshi Kawafuji, Yasunori Fujimoto
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Patent number: 9649853Abstract: Multi-valued data is corrected using different correction values depending on an attribute of an image.Type: GrantFiled: July 8, 2016Date of Patent: May 16, 2017Assignee: Canon Kabushiki KaishaInventors: Naoko Baba, Yasunori Fujimoto, Kazuki Narumi
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Publication number: 20170043588Abstract: A recorded matter recorded on a recording medium includes a first layer formed by an ink A on or above the recording medium, the first layer having an index of refraction A; a second layer formed by an ink B on the first layer formed by the ink B, the second layer having an index of refraction B (where B<A); and a third layer formed by an ink C or by a transparent resin material on the second layer, the third layer having an index of refraction C (where C>A) and forming a surface layer of the recorded matter.Type: ApplicationFiled: October 27, 2016Publication date: February 16, 2017Inventors: Rie Takekoshi, Takumi Kaneko, Kazuki Narumi, Ayumi Hirakawa, Yumi Kamimura
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Publication number: 20170008300Abstract: Multi-valued data is corrected using different correction values depending on an attribute of an image.Type: ApplicationFiled: July 8, 2016Publication date: January 12, 2017Inventors: Naoko Baba, Yasunori Fujimoto, Kazuki Narumi
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Publication number: 20160347051Abstract: A pattern of a first ink is formed on a recording medium using a first nozzle, a difference between smoothness of a surface at an edge portion of the pattern of the first ink in a predetermined direction and smoothness of a peripheral area of the pattern of the first ink on the recording medium is increased by applying another imparting material different from the first ink on the pattern of the first ink and a first adjustment pattern is formed, a second adjustment pattern of a predetermined imparting material is formed on the recording medium using a second nozzle, and a detection unit detects information by measuring specular reflected light when areas respectively including the first and the second adjustment patterns are each irradiated with light.Type: ApplicationFiled: May 24, 2016Publication date: December 1, 2016Inventors: Kazuki Narumi, Hiroshi Kawafuji, Yasunori Fujimoto
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Patent number: 9409413Abstract: In a recording apparatus, a dot diameter of a first color ink formed by discharging a predetermined amount of the first color ink onto a surface of a second color ink fixed on a recording medium is smaller than a dot diameter of the second color ink formed by discharging the predetermined amount of the second color ink onto a surface of the first color ink fixed on the recording medium, and a recording head discharges the plurality of inks such that with respect to pixels forming an image in a unit area, pixels formed by discharging the second color ink and the first color ink in this order are greater than pixels formed by discharging the first color ink and the second color ink in this order.Type: GrantFiled: April 14, 2014Date of Patent: August 9, 2016Assignee: Canon Kabushiki KaishaInventors: Takumi Kaneko, Rie Takekoshi, Kazuki Narumi, Ayumi Hirakawa
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Patent number: 9392135Abstract: There is provided an image processing apparatus for recording an image on a unit region of a recording medium by performing a plurality of relative scanning operations of the recording medium and a recording head including a plurality of recording elements arranged in a certain direction. The image processing apparatus stores, based on image data of the image and ratios of using a plurality of recording element groups for recording the image, each of the plurality of recording element groups including a different recording element, dot count values for the plurality of recording element groups, and determines, based on the stored dot count values, whether density correction data for correcting the image data needs to be generated.Type: GrantFiled: April 7, 2015Date of Patent: July 12, 2016Assignee: Canon Kabushiki KaishaInventors: Kazuki Narumi, Naoko Baba, Yasunori Fujimoto
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Publication number: 20150296098Abstract: There is provided an image processing apparatus for recording an image on a unit region of a recording medium by performing a plurality of relative scanning operations of the recording medium and a recording head including a plurality of recording elements arranged in a certain direction. The image processing apparatus stores, based on image data of the image and ratios of using a plurality of recording element groups for recording the image, each of the plurality of recording element groups including a different recording element, dot count values for the plurality of recording element groups, and determines, based on the stored dot count values, whether density correction data for correcting the image data needs to be generated.Type: ApplicationFiled: April 7, 2015Publication date: October 15, 2015Inventors: Kazuki Narumi, Naoko Baba, Yasunori Fujimoto
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Patent number: 8926078Abstract: An ink containing a plurality of coloring materials having different hues, wherein the bronze value B, which is calculated from tristimulus values of reflected light, of illumination in the direction of an angle of 45 degrees to a normal to the image, in the direction of specular reflection and tristimulus values of illumination light under the same condition of the illumination by using Formula 1, with respect to a predetermined recorded image recorded by the above-described ink is 2.0 or less.Type: GrantFiled: January 27, 2011Date of Patent: January 6, 2015Assignee: Canon Kabushiki KaishaInventors: Hiromitsu Kishi, Fumiaki Fujioka, Hirofumi Ichinose, Rie Takekoshi, Takumi Kaneko, Yumi Kamimura, Kazuki Narumi, Akihiro Kakinuma
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Publication number: 20140307017Abstract: In a recording apparatus, a dot diameter of a first color ink formed by discharging a predetermined amount of the first color ink onto a surface of a second color ink fixed on a recording medium is smaller than a dot diameter of the second color ink formed by discharging the predetermined amount of the second color ink onto a surface of the first color ink fixed on the recording medium, and a recording head discharges the plurality of inks such that with respect to pixels forming an image in a unit area, pixels formed by discharging the second color ink and the first color ink in this order are greater than pixels formed by discharging the first color ink and the second color ink in this order.Type: ApplicationFiled: April 14, 2014Publication date: October 16, 2014Applicant: CANON KABUSHIKI KAISHAInventors: Takumi Kaneko, Rie Takekoshi, Kazuki Narumi, Ayumi Hirakawa
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Publication number: 20140302290Abstract: A recorded matter recorded on a recording medium includes a first layer formed by an ink A on or above the recording medium, the first layer having an index of refraction A; a second layer formed by an ink B on the first layer formed by the ink B, the second layer having an index of refraction B (where B<A); and a third layer formed by an ink C or by a transparent resin material on the second layer, the third layer having an index of refraction C (where C>A) and forming a surface layer of the recorded matter.Type: ApplicationFiled: November 1, 2012Publication date: October 9, 2014Inventors: Rie Takekoshi, Takumi Kaneko, Kazuki Narumi, Ayumi Hirakawa, Yumi Kamimura
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Patent number: 8783808Abstract: An inkjet printing device having a print head that ejects a plurality of types of inks has: an ejection unit configured to, on the basis of ejection data that scans the print head a plurality of times to eject the inks from the print head to a predetermined area of a print medium, eject the inks to print an image; wherein the inks are classified into a first ink having a relatively large contact angle and a second ink having a relatively small contact angle, and wherein the ejection data is ejection data that, if a difference in application amount between the first ink and the second ink to be ejected to the predetermined area by the ejection unit is larger than a predetermined value, increases a ratio at which an ink having a smaller application amount is ejected in last half scans among the plurality of times of scans.Type: GrantFiled: December 12, 2011Date of Patent: July 22, 2014Assignee: Canon Kabushiki KaishaInventors: Rie Takekoshi, Ayumi Hirakawa, Takumi Kaneko, Yumi Kamimura, Kazuki Narumi, Noboru Kunimine
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Patent number: 8714680Abstract: Gradation data for each color to be input to a recording apparatus includes dot-recording-position information for every unit pixel and information for determining a nozzle position in a recording head for recording a dot. The information for determining the nozzle position makes determination in accordance with image data of an ink with resin and image data of an ink without resin. In a region where the ink with resin and the ink without resin overlap with each other, the ink without resin can land first.Type: GrantFiled: June 11, 2012Date of Patent: May 6, 2014Assignee: Canon Kabushiki KaishaInventors: Kazuki Narumi, Takumi Kaneko
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Patent number: 8654393Abstract: An image processor and an image processing method are provided which can suppress both a bronzing phenomenon and a color rolling in an inkjet printing apparatus and produce high-quality monochrome pictures. To that end, a monochrome image is processed by generating the multivalued density data for a chromatic ink having a hue component opposite that of the achromatic ink in a low to medium density region and, in a high density region, generating the multivalued density data for a chromatic ink having a reflection light with a hue component opposite that of a reflection light of the achromatic ink. With this arrangement, a high-quality monochrome image can be produced which has hardly noticeable hue deviations and bronzing phenomenon in the entire density grayscale or density range.Type: GrantFiled: December 7, 2010Date of Patent: February 18, 2014Assignee: Canon Kabushiki KaishaInventors: Kazuki Narumi, Takumi Kaneko, Rie Takekoshi
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Patent number: 8356871Abstract: An inkjet printing apparatus includes a print head that scans a same area of a printing medium plural times and ejects plural kinds of ink and a treatment liquid thereon to form an image, and an ejection data generating unit for generating ejection data for ejecting the plural kinds of ink and the treatment liquid to each predetermined area of the printing medium in a predetermined order from the print head. The plural kinds of ink are classified in plurality based upon a minimum application amount of the treatment liquid per a predetermined area required for realizing an effect of the treatment liquid, and the ejection data generating unit generates the ejection data in such a manner as to eject the plural kinds of ink and the treatment liquid from the print head according to the order determined in accordance with the classification of the ink ejected within the predetermined area.Type: GrantFiled: June 18, 2010Date of Patent: January 22, 2013Assignee: Canon Kabushiki KaishaInventors: Noboru Kunimine, Rie Takekoshi, Takumi Kaneko, Takao Ogata, Kazuki Narumi, Yumi Kamimura