Patents by Inventor Takahisa Ikeda
Takahisa Ikeda 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: 9457568Abstract: An inkjet head includes a plurality of nozzles, a plurality of pressure chambers arranged along a first direction, each of which extends in a second direction crossing the first direction, communicates with one of the nozzles, and has a first end through which ink is supplied and a second end through which ink is recycled, a plurality of ink inlets configured on a side of the first ends of the pressure chambers through which ink is supplied to the pressure chambers, and a plurality of ink outlets configured on a side of the second ends of the pressure chambers through which ink is recycled from the pressure chambers. A flow rate of the ink flowing from a ink inlet to an ink outlet through pressure chambers that are at the ends along the arrangement positions of the pressure chambers is higher than a flow rate of the ink flowing from an ink inlet to an ink outlet through pressure chambers that are at the center along the arrangement positions of the pressure chambers.Type: GrantFiled: November 24, 2014Date of Patent: October 4, 2016Assignee: TOSHIBA TEC KABUSHIKI KAISHAInventor: Takahisa Ikeda
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Publication number: 20150262159Abstract: A merchandise sales data processing device includes a specification unit, a detection unit, a calculation unit, and a processing unit. The specification unit specifies merchandise. The detection unit detects information related to an ingredient which is contained in specified merchandise. The calculation unit calculates a tax amount which is imposed on merchandise based on the detected ingredient information. The processing unit processes sales data of merchandise using the calculated tax amount.Type: ApplicationFiled: March 2, 2015Publication date: September 17, 2015Inventors: Tomonari Kakino, Koji Tanimoto, Nobuhiko Nakahara, Kenichi Komiya, Yasuo Matsumoto, Kazuhiro Hara, Eiji Gumbe, Takahisa Ikeda, Norimasa Ariga, Hirofumi Harada
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Publication number: 20150145929Abstract: An inkjet head includes a plurality of nozzles, a plurality of pressure chambers arranged along a first direction, each of which extends in a second direction crossing the first direction, communicates with one of the nozzles, and has a first end through which ink is supplied and a second end through which ink is recycled, a plurality of ink inlets configured on a side of the first ends of the pressure chambers through which ink is supplied to the pressure chambers, and a plurality of ink outlets configured on a side of the second ends of the pressure chambers through which ink is recycled from the pressure chambers. A flow rate of the ink flowing from a ink inlet to an ink outlet through pressure chambers that are at the ends along the arrangement positions of the pressure chambers is higher than a flow rate of the ink flowing from an ink inlet to an ink outlet through pressure chambers that are at the center along the arrangement positions of the pressure chambers.Type: ApplicationFiled: November 24, 2014Publication date: May 28, 2015Inventor: Takahisa IKEDA
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Patent number: 8047644Abstract: An air removing device is connected to a tank to contain ink through a first supply tube, and an ink-jet head is connected to the air removing device through a second supply tube. The first supply tube and ink-jet head are heated and controlled. Air dissolved in ink is sucked out through a hollow fiber membrane provided in a housing by operating a vacuum pump by supplying ink to the hollow fiber membrane while heating and controlling atmosphere in the housing. Thus, air dissolved in ink is removed, and ink heated to a temperature suitable for ejection is supplied to the ink-jet head.Type: GrantFiled: April 22, 2008Date of Patent: November 1, 2011Assignee: Toshiba TEC Kabushiki KaishaInventors: Takahisa Ikeda, Atsushi Kubota
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Patent number: 7857423Abstract: An ink-jet head includes a nozzle array including plural nozzles. The nozzle array has a first nozzle group arranged in the center thereof and second nozzle groups arranged further on outer sides than the first nozzle group. Inter-nozzle pitches of the second nozzle groups are larger than inter-nozzle pitches of the first nozzle group. A direction in which nozzles of the second nozzle group eject an ink and a direction in which nozzles of the first nozzle group eject the ink are different.Type: GrantFiled: September 10, 2008Date of Patent: December 28, 2010Assignee: Toshiba Tec Kabushiki KaishaInventors: Isao Suzuki, Yoshiro Eto, Masashi Shimosato, Takahisa Ikeda, Megumi Shimizu, Minoru Koyata, Hideaki Nishida, Takashi Kukuchi
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Publication number: 20090009570Abstract: An ink-jet recording apparatus is provided which includes an ink-jet head having a plurality of ink chambers and a common ink chamber which communicates with each of the plurality of ink chambers to supply ink to the plurality of ink chambers, the ink-jet head maintaining the plurality of ink chambers at a negative pressure in image recording, selecting one of the plurality of ink chambers on the basis of printing data and causing change in volume of the selected ink chamber, and thereby performing image recording by discharging the ink from a nozzle, and a pressure section which applies a positive pressure to the plurality of ink chambers when the ink-jet head is in a left state, the positive pressure being a pressure at which the ink is not discharged from the nozzle.Type: ApplicationFiled: September 8, 2008Publication date: January 8, 2009Applicant: Toshiba Tec Kabushiki KaishaInventors: Megumi SHIMIZU, Takahisa Ikeda, Kouichi Adachi
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Publication number: 20090002441Abstract: An ink-jet head includes a nozzle array including plural nozzles. The nozzle array has a first nozzle group arranged in the center thereof and second nozzle groups arranged further on outer sides than the first nozzle group. Inter-nozzle pitches of the second nozzle groups are larger than inter-nozzle pitches of the first nozzle group. A direction in which nozzles of the second nozzle group eject an ink and a direction in which nozzles of the first nozzle group eject the ink are different.Type: ApplicationFiled: September 10, 2008Publication date: January 1, 2009Applicant: TOSHIBA TEC KABUSHIKI KAISHAInventors: Isao Suzuki, Yoshiro Eto, Masashi Shimosato, Takahisa Ikeda, Megumi Shimizu, Minoru Koyata, Hideaki Nishida, Takashi Kukuchi
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Patent number: 7438387Abstract: An ink-jet recording apparatus is provided which includes an ink-jet head having a plurality of ink chambers and a common ink chamber which communicates with each of the plurality of ink chambers to supply ink to the plurality of ink chambers, the ink-jet head maintaining the plurality of ink chambers at a negative pressure in image recording, selecting one of the plurality of ink chambers on the basis of printing data and causing change in volume of the selected ink chamber, and thereby performing image recording by discharging the ink from a nozzle, and a pressure section which applies a positive pressure to the plurality of ink chambers when the ink-jet head is in a left state, the positive pressure being a pressure at which the ink is not discharged from the nozzle.Type: GrantFiled: June 21, 2007Date of Patent: October 21, 2008Assignee: Toshiba Tec Kabushiki KaishaInventors: Megumi Shimizu, Takahisa Ikeda, Kouichi Adachi
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Patent number: 7434909Abstract: An ink-jet head includes a nozzle array including plural nozzles. The nozzle array has a first nozzle group arranged in the center thereof and second nozzle groups arranged further on outer sides than the first nozzle group. Inter-nozzle pitches of the second nozzle groups are larger than inter-nozzle pitches of the first nozzle group. A direction in which nozzles of the second nozzle group eject an ink and a direction in which nozzles of the first nozzle group eject the ink are different.Type: GrantFiled: December 28, 2006Date of Patent: October 14, 2008Assignee: Toshiba Tec Kabushiki KaishaInventors: Isao Suzuki, Yoshiro Eto, Masashi Shimosato, Takahisa Ikeda, Megumi Shimizu, Minoru Koyata, Hideaki Nishida, Takashi Kukuchi
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Publication number: 20080198212Abstract: An air removing device is connected to a tank to contain ink through a first supply tube, and an ink-jet head is connected to the air removing device through a second supply tube. The first supply tube and ink-jet head are heated and controlled. Air dissolved in ink is sucked out through a hollow fiber membrane provided in a housing by operating a vacuum pump by supplying ink to the hollow fiber membrane while heating and controlling atmosphere in the housing. Thus, air dissolved in ink is removed, and ink heated to a temperature suitable for ejection is supplied to the ink-jet head.Type: ApplicationFiled: April 22, 2008Publication date: August 21, 2008Applicant: Toshiba Tec Kabushiki KaishaInventors: Takahisa Ikeda, Atsushi Kubota
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Publication number: 20080158295Abstract: An ink-jet head includes a nozzle array including plural nozzles. The nozzle array has a first nozzle group arranged in the center thereof and second nozzle groups arranged further on outer sides than the first nozzle group. Inter-nozzle pitches of the second nozzle groups are larger than inter-nozzle pitches of the first nozzle group. A direction in which nozzles of the second nozzle group eject an ink and a direction in which nozzles of the first nozzle group eject the ink are different.Type: ApplicationFiled: December 28, 2006Publication date: July 3, 2008Applicant: TOSHIBA TEC KABUSHIKI KAISHAInventors: Isao Suzuki, Yoshiro Eto, Masashi Shimosato, Takahisa Ikeda, Megumi Shimizu, Minoru Koyata, Hideaki Nishida, Takashi Kikuchi
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Patent number: 7360882Abstract: An air removing device is connected to a tank to contain ink through a first supply tube, and an ink-jet head is connected to the air removing device through a second supply tube. The first supply tube and ink-jet head are heated and controlled. Air dissolved in ink is sucked out through a hollow fiber membrane provided in a housing by operating a vacuum pump by supplying ink to the hollow fiber membrane while heating and controlling atmosphere in the housing. Thus, air dissolved in ink is removed, and ink heated to a temperature suitable for ejection is supplied to the ink-jet head.Type: GrantFiled: April 22, 2005Date of Patent: April 22, 2008Assignee: Toshiba Tec Kabushiki KaishaInventors: Takahisa Ikeda, Atsushi Kubota
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Patent number: 7341337Abstract: An ink jet recording apparatus in which a filter unit to filter ink with a filter having a pore size of 2.2 to 5.8 ?m is provided in an ink supply channel to supply the ink to an ink jet head. The ink flowing through the ink supply channel is quickly filtered by the filter unit, and supplied to the ink jet head without delay, thus the occurrence of ink discharge failure can be reliably suppressed.Type: GrantFiled: June 30, 2004Date of Patent: March 11, 2008Assignee: Toshiba Tec Kabushiki KaishaInventor: Takahisa Ikeda
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Publication number: 20080030546Abstract: An ink-jet recording apparatus is provided which includes an ink-jet head having a plurality of ink chambers and a common ink chamber which communicates with each of the plurality of ink chambers to supply ink to the plurality of ink chambers, the ink-jet head maintaining the plurality of ink chambers at a negative pressure in image recording, selecting one of the plurality of ink chambers on the basis of printing data and causing change in volume of the selected ink chamber, and thereby performing image recording by discharging the ink from a nozzle, and a pressure section which applies a positive pressure to the plurality of ink chambers when the ink-jet head is in a left state, the positive pressure being a pressure at which the ink is not discharged from the nozzle.Type: ApplicationFiled: June 21, 2007Publication date: February 7, 2008Applicant: Toshiba Tec Kabushiki KaishaInventors: Megumi Shimizu, Takahisa Ikeda, Kouichi Adachi
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Patent number: 7249827Abstract: An ink-jet recording apparatus is provided which includes an ink-jet head having a plurality of ink chambers and a common ink chamber which communicates with each of the plurality of ink chambers to supply ink to the plurality of ink chambers, the ink-jet head maintaining the plurality of ink chambers at a negative pressure in image recording, selecting one of the plurality of ink chambers on the basis of printing data and causing change in volume of the selected ink chamber, and thereby performing image recording by discharging the ink from a nozzle, and a pressure section which applies a positive pressure to the plurality of ink chambers when the ink-jet head is in a left state, the positive pressure being a pressure at which the ink is not discharged from the nozzle.Type: GrantFiled: October 19, 2004Date of Patent: July 31, 2007Assignee: Toshiba Tec Kabushiki KaishaInventors: Megumi Shimizu, Takahisa Ikeda, Kouichi Adachi
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Publication number: 20060284948Abstract: An air removing device is connected to a tank to contain ink through a first supply tube, and an ink-jet head is connected to the air removing device through a second supply tube. The first supply tube and ink-jet head are heated and controlled. Air dissolved in ink is sucked out through a hollow fiber membrane provided in a housing by operating a vacuum pump by supplying ink to the hollow fiber membrane while heating and controlling atmosphere in the housing. Thus, air dissolved in ink is removed, and ink heated to a temperature suitable for ejection is supplied to the ink-jet head.Type: ApplicationFiled: April 22, 2005Publication date: December 21, 2006Applicant: Toshiba Tec Kabushiki KaishaInventors: Takahisa Ikeda, Atsushi Kubota
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Patent number: 7070264Abstract: An ink jet recording apparatus having an ink jet head to discharge supplied ink from a nozzle, a deaeration device to deaerate dissolved gas from the ink supplied to the ink jet head, an ink reservoir, provided in an ink channel between the deaeration device and the ink jet head, to apply negative pressure by a difference in level of the ink reservoir surface and the nozzle, and a preventative member, floated on the surface of ink in the ink reservoir, to prevent contact between the ink and air. Even when the ink, from which dissolved gas has been deaerated by the deaeration device, is stored in the ink reservoir in a course of supplying process of the ink, re-dissolution of gas in the ink in the ink reservoir can be suppressed. Further, the ink can be reliably pressurized in the ink jet head, and ink droplets can be excellently discharged from the nozzle.Type: GrantFiled: October 20, 2003Date of Patent: July 4, 2006Assignee: Toshiba Tec Kabushiki KaishaInventor: Takahisa Ikeda
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Publication number: 20050174392Abstract: An ink-jet recording apparatus is provided which includes an ink-jet head having a plurality of ink chambers and a common ink chamber which communicates with each of the plurality of ink chambers to supply ink to the plurality of ink chambers, the ink-jet head maintaining the plurality of ink chambers at a negative pressure in image recording, selecting one of the plurality of ink chambers on the basis of printing data and causing change in volume of the selected ink chamber, and thereby performing image recording by discharging the ink from a nozzle, and a pressure section which applies a positive pressure to the plurality of ink chambers when the ink-jet head is in a left state, the positive pressure being a pressure at which the ink is not discharged from the nozzle.Type: ApplicationFiled: October 19, 2004Publication date: August 11, 2005Applicant: Toshiba Tec Kabushiki KaishaInventors: Megumi Shimizu, Takahisa Ikeda, Kouichi Adachi
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Publication number: 20050007429Abstract: An ink jet recording apparatus in which a filter unit to filter ink with a filter having a pore size of 2.2 to 5.8 ?m is provided in an ink supply channel to supply the ink to an ink jet head. The ink flowing through the ink supply channel is quickly filtered by the filter unit, and supplied to the ink jet head without delay, thus the occurrence of ink discharge failure can be reliably suppressed.Type: ApplicationFiled: June 30, 2004Publication date: January 13, 2005Applicant: Toshiba Tec Kabushiki KaishaInventor: Takahisa Ikeda
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Publication number: 20040100541Abstract: An ink jet recording apparatus having an ink jet head to discharge supplied ink from a nozzle, a deaeration device to deaerate dissolved gas from the ink supplied to the ink jet head, an ink reservoir, provided in an ink channel between the deaeration device and the ink jet head, to apply negative pressure by a difference in level of the ink reservoir surface and the nozzle, and a preventative member, floated on the surface of ink in the ink reservoir, to prevent contact between the ink and air. Even when the ink, from which dissolved gas has been deaerated by the deaeration device, is stored in the ink reservoir in a course of supplying process of the ink, re-dissolution of gas in the ink in the ink reservoir can be suppressed. Further, the ink can be reliably pressurized in the ink jet head, and ink droplets can be excellently discharged from the nozzle.Type: ApplicationFiled: October 20, 2003Publication date: May 27, 2004Inventor: Takahisa Ikeda