Patents by Inventor Hinako Iritani
Hinako Iritani 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: 9434194Abstract: An ink jet recording apparatus that executes ink jet recording based on multi-pass recording and that achieves a high glossiness and a low granularity is provided. Based on information corresponding to an ink discharge amount, distribution and concentration masks are selected for low and high duty areas of a recorded image, respectively.Type: GrantFiled: November 17, 2009Date of Patent: September 6, 2016Assignee: Canon Kabushiki KaishaInventors: Hinako Iritani, Yuji Konno
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Patent number: 8888204Abstract: It is an object of this invention to provide an inkjet printing apparatus that can print an image with high uniformity in image clarity and gloss level irrespective of the gradation value of the image. The print head of this invention can eject color inks and an image quality improvement liquid that changes at least the gloss level or image clarity of the image. The print head scans over same print areas of a print medium to form an image and at the same time applies the image quality improvement liquid onto the image. A control unit raises the volume of the image quality improvement liquid applied to unit areas in a relatively subsequent scan to the volume of the image quality improvement liquid applied to unit areas in a relatively preceding scan at a rate that corresponds to the volume of the color ink applied to the unit areas.Type: GrantFiled: August 26, 2011Date of Patent: November 18, 2014Assignee: Canon Kabushiki KaishaInventors: Hinako Iritani, Hiroshi Tajika, Yuji Konno
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Patent number: 8730520Abstract: An image processing method includes the steps of converting input image data to ink color data corresponding to each amount of a plurality of colors of achromatic inks used for printing, and generating printing data for first, second and third achromatic inks based on the ink color data. The printing data is used for printing by causing a printing head to scan a common image area in a printing medium a plurality of times, the printing head ejecting the plurality of colors of inks.Type: GrantFiled: August 3, 2011Date of Patent: May 20, 2014Assignee: Canon Kabushiki KaishaInventors: Yuji Konno, Hinako Iritani, Yuji Hamasaki, Takeshi Yazawa, Satoshi Seki, Eiichi Nakata
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Patent number: 8714678Abstract: An inkjet printing device uses a print head including a first nozzle array for ink ejection and a second nozzle array for ejection of an image quality improvement liquid (CL), and the device prints an image on a print medium by repeating a print scan. The inkjet printing device includes a first controller for, during a first print scan, allowing nozzles on an upstream side of the first nozzle array in the conveying direction to eject the ink, and a second controller for, during the first print scan, allowing nozzles on an upstream side of the second nozzle array in the conveying direction to eject the liquid (CL) into an ink ejection area. In aaddition, a third controller, during a second print scan after the first print scan, allows nozzles on a downstream side of the second nozzle array in the conveying direction to eject the liquid (CL) into the ink ejection area.Type: GrantFiled: August 3, 2011Date of Patent: May 6, 2014Assignee: Canon Kabushiki KaishaInventors: Yuji Konno, Satoshi Seki, Hinako Iritani
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Patent number: 8579401Abstract: There is provided an inkjet printing apparatus which can restrict each of coloring of reflected light and image clarity within an allowable range required in each of a color mode and a monochromatic mode in any of the modes to output an image with a high grade. For this end, a print duty of each of the first image improving liquid and the second image improving liquid is set in such a manner that a ratio of the print duty of the first image improving liquid having low penetratability to the print duty of the second image improving liquid having high penetratability is higher in the monochromatic mode than that in the color mode. Thereby, an appropriate ratio and an appropriate amount of appropriate kinds of the image improving liquids are applied to each of the color mode and the monochromatic mode.Type: GrantFiled: August 25, 2011Date of Patent: November 12, 2013Assignee: Canon Kabushiki KaishaInventors: Hinako Iritani, Yuji Konno, Yuji Hamasaki, Takeshi Yazawa, Satoshi Seki, Yoshio Nakajima
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Patent number: 8517495Abstract: An apparatus is configured to perform recording with at least three types of inks that are similar in color and different in pigment density. The apparatus is capable of operating in a first mode for performing recording on a first recording medium using at least one of a second ink having a pigment density that is lower than that of a first ink and a third ink having a pigment density that is lower than that of the second ink, and in a second mode for performing recording on a second recording medium, which has a lower glossiness than the first recording medium, using at least the first ink.Type: GrantFiled: April 26, 2010Date of Patent: August 27, 2013Assignee: Canon Kabushiki KaishaInventors: Hinako Iritani, Hiroshi Tajika, Hideki Takayama
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Patent number: 8485629Abstract: The first printing mode improves gloss uniformity by setting the colorless ink discharge amount to be equal to or smaller than a reference value A at a dark image portion in input image data, and performing normal discharge printing in which printing with a colorless ink starts before completion of printing with a color ink (FIG. 11C). The second printing mode implements a wide color reproductive range by setting the colorless ink discharge amount to be larger than A at the dark image portion, and performing post-discharge printing in which discharge of the colorless ink starts after completion of printing with the color ink (FIG. 11D).Type: GrantFiled: March 23, 2011Date of Patent: July 16, 2013Assignee: Canon Kabushiki KaishaInventors: Hinako Iritani, Hiroshi Tajika, Yuji Konno, Takeshi Yazawa, Satoshi Seki
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Patent number: 8342649Abstract: A printing apparatus and a printing method are provided by which, when an image is printed by a plurality of printing modes using different printing elements, a plurality of printing elements can have an equalized use frequency to thereby maintain the uniformity of quality of the printed image. In a first multipath printing control, a use rate of a nozzle group that is not used in the first multipath printing control and that is used in a second multipath printing control is higher than that of a nozzle group that is used in the first and second multipath printing controls.Type: GrantFiled: August 9, 2011Date of Patent: January 1, 2013Assignee: Canon Kabushiki KaishaInventors: Takeshi Yazawa, Yuji Konno, Satoshi Seki, Hinako Iritani
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Publication number: 20120050370Abstract: There is provided an inkjet printing apparatus which can restrict each of coloring of reflected light and image clarity within an allowable range required in each of a color mode and a monochromatic mode in any of the modes to output an image with a high grade. For this end, a print duty of each of the first image improving liquid and the second image improving liquid is set in such a manner that a ratio of the print duty of the first image improving liquid having low penetratability to the print duty of the second image improving liquid having high penetratability is higher in the monochromatic mode than that in the color mode. Thereby, an appropriate ratio and an appropriate amount of appropriate kinds of the image improving liquids are applied to each of the color mode and the monochromatic mode.Type: ApplicationFiled: August 25, 2011Publication date: March 1, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Hinako Iritani, Yuji Konno, Yuji Hamasaki, Takeshi Yazawa, Satoshi Seki, Yoshio Nakajima
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Publication number: 20120050365Abstract: An inkjet printing device using a print head including a first nozzle array for ink ejection and a second nozzle array for ejection of an image quality improvement liquid (CL), the device printing an image on a print medium by repeating a print scan, the inkjet printing device including control means for, during a first print scan, allowing nozzles on an upstream side of the first nozzle array in the conveying direction to eject the ink; control means for, during the first print scan, allowing nozzles on an upstream side of the second nozzle array in the conveying direction to eject the liquid (CL) into an ink ejection area; and control means for, during a second print scan after the first print scan, allowing nozzles on a downstream side of the second nozzle array in the conveying direction to eject the liquid (CL) into the ink ejection area.Type: ApplicationFiled: August 3, 2011Publication date: March 1, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Yuji Konno, Satoshi Seki, Hinako Iritani
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Publication number: 20120050362Abstract: It is an object of this invention to provide an inkjet printing apparatus that can print an image with high uniformity in image clarity and gloss level irrespective of the gradation value of the image. The print head of this invention can eject color inks and an image quality improvement liquid that changes at least the gloss level or image clarity of the image. The print head scans over same print areas of a print medium to form an image and at the same time applies the image quality improvement liquid onto the image. A control unit raises the volume of the image quality improvement liquid applied to unit areas in a relatively subsequent scan to the volume of the image quality improvement liquid applied to unit areas in a relatively preceding scan at a rate that corresponds to the volume of the color ink applied to the unit areas.Type: ApplicationFiled: August 26, 2011Publication date: March 1, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Hinako Iritani, Hiroshi Tajika, Yuji Konno
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Publication number: 20120050762Abstract: The present invention suppresses a bronzing phenomenon that occurs easily in inkjet printing that uses pigment ink, and minimizes other effects on the image quality by particularly minimizing the change in gray balance. Of at least first and second achromatic inks having different densities of pigment coloring material, the amount of resin in the second achromatic ink (light gray ink) having the lowest density of coloring material is increased, and on the achromatic color axis, a specified amount of light gray ink is used up to gradations other than highlighted areas, and light gray ink is printed in scans after all the inks that include the second achromatic ink. As a result, it is possible to reduce the bronzing phenomenon.Type: ApplicationFiled: August 3, 2011Publication date: March 1, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Yuji Konno, Hinako Iritani, Yuji Hamasaki, Takeshi Yazawa, Satoshi Seki, Eiichi Nakata
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Publication number: 20120044297Abstract: A printing apparatus and a printing method are provided by which, when an image is printed by a plurality of printing modes using different printing elements, a plurality of printing elements can have an equalized use frequency to thereby maintain the uniformity of quality of the printed image. In a first multipath printing control, a use rate of a nozzle group that is not used in the first multipath printing control and that is used in a second multipath printing control is higher than that of a nozzle group that is used in the first and second multipath printing controls.Type: ApplicationFiled: August 9, 2011Publication date: February 23, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Takeshi Yazawa, Yuji Konno, Satoshi Seki, Hinako Iritani
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Publication number: 20110242176Abstract: The first printing mode improves gloss uniformity by setting the colorless ink discharge amount to be equal to or smaller than a reference value A at a dark image portion in input image data, and performing normal discharge printing in which printing with a colorless ink starts before completion of printing with a color ink (FIG. 11C). The second printing mode implements a wide color reproductive range by setting the colorless ink discharge amount to be larger than A at the dark image portion, and performing post-discharge printing in which discharge of the colorless ink starts after completion of printing with the color ink (FIG. 11D).Type: ApplicationFiled: March 23, 2011Publication date: October 6, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Hinako Iritani, Hiroshi Tajika, Yuji Konno, Takeshi Yazawa, Satoshi Seki
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Publication number: 20100271411Abstract: An apparatus is configured to perform recording with at least three types of inks that are similar in color and different in pigment density. The apparatus is capable of operating in a first mode for performing recording on a first recording medium using at least one of a second ink having a pigment density that is lower than that of a first ink and a third ink having a pigment density that is lower than that of the second ink, and in a second mode for performing recording on a second recording medium, which has a lower glossiness than the first recording medium, using at least the first ink.Type: ApplicationFiled: April 26, 2010Publication date: October 28, 2010Applicant: CANON KABUSHIKI KAISHAInventors: Hinako Iritani, Hiroshi Tajika, Hideki Takayama
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Publication number: 20100123749Abstract: An ink jet recording apparatus that executes ink jet recording based on multi-pass recording and that achieves a high glossiness and a low granularity is provided. Based on information corresponding to an ink discharge amount, distribution and concentration masks are selected for low and high duty areas of a recorded image, respectively.Type: ApplicationFiled: November 17, 2009Publication date: May 20, 2010Applicant: CANON KABUSHIKI KAISHAInventors: Hinako Iritani, Yuji Konno