Patents by Inventor Nobuhiro Katsuta
Nobuhiro Katsuta 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: 9696670Abstract: A fixing device includes a fixing unit that fixes a developer on a recording medium, a first heating unit, and at least one second heating unit. The first heating unit is disposed at an upstream side of the fixing unit in a transport direction of the recording medium, and heats the recording medium so that a temperature of the recording medium is set at a first temperature that is equal to or lower than a temperature of the fixing member and is equal to or higher than a thermal deformation temperature at which the recording medium is deformed. The at least one second heating unit comes into contact with the recording medium at a downstream side with respect to the first heating unit and at an upstream side with respect to the fixing unit, and heats the recording medium at a second temperature that is lower than the first temperature.Type: GrantFiled: June 29, 2016Date of Patent: July 4, 2017Assignee: FUJI XEROX CO., LTD.Inventors: Masaaki Abe, Nobuhiro Katsuta, Yasufumi Suwabe, Satoshi Tatsuura
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Publication number: 20170060055Abstract: A fixing device includes a fixing unit that fixes a developer on a recording medium, a first heating unit, and at least one second heating unit. The first heating unit is disposed at an upstream side of the fixing unit in a transport direction of the recording medium, and heats the recording medium so that a temperature of the recording medium is set at a first temperature that is equal to or lower than a temperature of the fixing member and is equal to or higher than a thermal deformation temperature at which the recording medium is deformed. The at least one second heating unit comes into contact with the recording medium at a downstream side with respect to the first heating unit and at an upstream side with respect to the fixing unit, and heats the recording medium at a second temperature that is lower than the first temperature.Type: ApplicationFiled: June 29, 2016Publication date: March 2, 2017Applicant: FUJI XEROX CO., LTD.Inventors: Masaaki ABE, Nobuhiro KATSUTA, Yasufumi SUWABE, Satoshi TATSUURA
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Patent number: 9304451Abstract: Provided is a heating transport device, including a heating transport roll around which a recording medium to which a toner image is transferred is wound, and that transports the recording medium while heating the toner image to a temperature higher than or equal to a melting temperature of toner, and a cooling roll that forms a nip with the heating transport roll, transports the recording medium, and cools the recording medium such that the temperature of the recording medium is lower than or equal to a heat deformation temperature of the recording medium at a position at which the recording medium separates from the heating transport roll.Type: GrantFiled: July 31, 2015Date of Patent: April 5, 2016Assignee: FUJI XEROX CO., LTD.Inventors: Yasufumi Suwabe, Nobuhiro Katsuta, Masaaki Abe, Satoshi Tatsuura
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Publication number: 20160091840Abstract: Provided is a fixing device including a fixing unit that includes a pipe-shaped fixing member which includes an outermost layer including at least one selected from a group consisting of a hydrogenated nitrile rubber and a denatured hydrogenated nitrile rubber, and heats and pressurizes the recording medium to fix an unfixed developer image on a recording medium by bringing the outermost layer into contact with a surface of the recording medium which holds the developer image, the recording medium being transported while holding the unfixed developer image, and a heating unit that is disposed on an upstream side of the fixing unit in a transport direction of the recording medium, and heats the recording medium transported while holding the unfixed developer image.Type: ApplicationFiled: February 18, 2015Publication date: March 31, 2016Inventors: Yasushi KAWAHATA, Nobuhiro KATSUTA, Keitaro MORI
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Patent number: 9291970Abstract: Provided is a fixing device including a fixing unit that includes a pipe-shaped fixing member which includes an outermost layer including at least one selected from a group consisting of a hydrogenated nitrile rubber and a denatured hydrogenated nitrile rubber, and heats and pressurizes the recording medium to fix an unfixed developer image on a recording medium by bringing the outermost layer into contact with a surface of the recording medium which holds the developer image, the recording medium being transported while holding the unfixed developer image, and a heating unit that is disposed on an upstream side of the fixing unit in a transport direction of the recording medium, and heats the recording medium transported while holding the unfixed developer image.Type: GrantFiled: February 18, 2015Date of Patent: March 22, 2016Assignee: FUJI XEROX CO., LTD.Inventors: Yasushi Kawahata, Nobuhiro Katsuta, Keitaro Mori
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Patent number: 9201375Abstract: Provided is an image forming apparatus including a first image forming unit that forms a first image on a front surface of a transported medium with a developer including toners and non-volatile oils, a removing unit that heats non-volatile oils on the front surface of the medium to remove the oils, a second image forming unit that forms a second image on a back surface of the medium with a developer including toners and non-volatile oils, a removing section that heats non-volatile oils on the back surface of the medium to remove the oils, and a fixing unit that fixes the first image and the second image on the front surface and the back surface of the medium.Type: GrantFiled: February 24, 2015Date of Patent: December 1, 2015Assignee: FUJI XEROX CO., LTD.Inventors: Kazunari Komatsuzaki, Nobuhiro Katsuta, Yasushi Kawahata, Satoshi Tatsuura, Yutaka Nogami, Keitaro Mori
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Patent number: 9176413Abstract: There is provided a liquid developer containing a toner that has a ratio G?(65)/G?(90) of a storage modulus G?(65) at 65° C. to a storage modulus G?(90) at 90° C. of from 1×10 to 1×103, and a carrier liquid that has a difference ?SP(tc) of SP value between the carrier liquid and the toner of from 1.5 to 7.0, and an image forming apparatus containing an electrostatic latent image holding member, a charging device, a latent image forming device, a developing device, a transfer device and a fixing device.Type: GrantFiled: February 21, 2014Date of Patent: November 3, 2015Assignee: Fuji Xerox Co., Ltd.Inventors: Satoshi Tatsuura, Keitaro Mori, Nobuhiro Katsuta
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Publication number: 20150268613Abstract: Provided is an image forming apparatus including a first image forming unit that forms a first image on a front surface of a transported medium with a developer including toners and non-volatile oils, a removing unit that heats non-volatile oils on the front surface of the medium to remove the oils, a second image forming unit that forms a second image on a back surface of the medium with a developer including toners and non-volatile oils, a removing section that heats non-volatile oils on the back surface of the medium to remove the oils, and a fixing unit that fixes the first image and the second image on the front surface and the back surface of the medium.Type: ApplicationFiled: February 24, 2015Publication date: September 24, 2015Inventors: Kazunari KOMATSUZAKI, Nobuhiro KATSUTA, Yasushi KAWAHATA, Satoshi TATSUURA, Yutaka NOGAMI, Keitaro MORI
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Patent number: 9075349Abstract: An image forming apparatus includes an image carrier, a charging unit, an electrostatic latent image forming unit, a developing unit that contains a liquid developer containing a toner and a carrier solution and that develops an electrostatic latent image with the liquid developer to form a toner image on the surface of the image carrier, a transfer unit that transfers the toner image onto a recording medium, and a fixing unit that includes at least one pair of first and second rotating members that form a nip between the first and second rotating members. The following condition (A) is satisfied: the amount of the carrier solution on the surface of the toner image is about 0.7 g/m2 or less during passing of the recording medium through the nip of the most-downstream pair of the at least one rotating-member pair in the leading direction of the recording medium.Type: GrantFiled: October 31, 2013Date of Patent: July 7, 2015Assignee: FUJI XEROX CO., LTD.Inventors: Kazunari Komatsuzaki, Nobuhiro Katsuta, Satoshi Tatsuura, Yutaka Nogami
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Publication number: 20150016852Abstract: Provided is a fixing device, including a fixing unit that fixes a toner image developed by a developer including toner and a carrier liquid to a recording medium, and a preprocessing unit that includes a metallic rotating body that is placed on the toner image side of the recording medium and rotates, a pressure member that includes an elastic layer and pressurizes the recording medium along with the rotating body, and a heating unit that heats the rotating body, the preprocessing unit being placed at the upstream side of the fixing unit in a transport direction of the recording medium, and performing preprocessing by which a portion of the carrier liquid is removed from the recording medium.Type: ApplicationFiled: February 19, 2014Publication date: January 15, 2015Applicant: FUJI XEROX CO., LTD.Inventors: Nobuhiro KATSUTA, Yutaka NOGAMI, Satoshi TATSUURA, Kazunari KOMATSUZAKI
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Publication number: 20140376967Abstract: An image forming apparatus includes an image carrier, a charging unit, an electrostatic latent image forming unit, a developing unit that contains a liquid developer containing a toner and a carrier solution and that develops an electrostatic latent image with the liquid developer to form a toner image on the surface of the image carrier, a transfer unit that transfers the toner image onto a recording medium, and a fixing unit that includes at least one pair of first and second rotating members that form a nip between the first and second rotating members. The following condition (A) is satisfied: the amount of the carrier solution on the surface of the toner image is about 0.7 g/m2 or less during passing of the recording medium through the nip of the most-downstream pair of the at least one rotating-member pair in the leading direction of the recording medium.Type: ApplicationFiled: October 31, 2013Publication date: December 25, 2014Applicant: FUJI XEROX CO., LTD.Inventors: Kazunari KOMATSUZAKI, Nobuhiro KATSUTA, Satoshi TATSUURA, Yutaka NOGAMI
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Publication number: 20140242512Abstract: There is provided a liquid developer containing a toner that has a ratio G? (65)/G?(90) of a storage modulus G? (65) at 65° C. to a storage modulus G? (90) at 90° C. of from 1×103 to 1×105, and a carrier liquid that has a difference ?SP(tc) of SP value between the carrier liquid and the toner of from 1.5 to 7.0, and an image forming apparatus containing an electrostatic latent image holding member, a charging device, a latent image forming device, a developing device, a transfer device and a fixing device.Type: ApplicationFiled: August 19, 2013Publication date: August 28, 2014Applicant: FUJI XEROX CO., LTD.Inventors: Satoshi Tatsuura, Keitaro Mori, Nobuhiro Katsuta
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Publication number: 20140242513Abstract: There is provided a liquid developer containing a toner that has a ratio G?(65)/G?(90) of a storage modulus G?(65) at 65° C. to a storage modulus G?(90) at 90° C. of from 1×10 to 1×103, and a carrier liquid that has a difference ?SP(tc) of SP value between the carrier liquid and the toner of from 1.5 to 7.0, and an image forming apparatus containing an electrostatic latent image holding member, a charging device, a latent image forming device, a developing device, a transfer device and a fixing device.Type: ApplicationFiled: February 21, 2014Publication date: August 28, 2014Applicant: FUJI XEROX CO., LTD.Inventors: Satoshi Tatsuura, Keitaro Mori, Nobuhiro Katsuta
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Patent number: 7246874Abstract: The present invention provides a maintenance device which can suction ink in a short period of time and with a small amount of consumed ink. The maintenance device has a plurality of capping portions disposed so as to face a plurality of unit heads which can discharge liquid drops onto a recording medium; a plurality of small chambers communicating with the plurality of capping portions, respectively; a suction portion suctioning interiors of the small chambers; and a plurality of valve mechanisms independently controlling airtight states of the interiors of the small chambers. The present invention also provides a recording device equipped with this maintenance device.Type: GrantFiled: July 16, 2004Date of Patent: July 24, 2007Assignee: Fuji Xerox Co., Ltd.Inventors: Susumu Hirakata, Yoshihira Rai, Nobuhiro Katsuta, Hiroaki Satoh
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Patent number: 7114793Abstract: A recording apparatus contains a recording head having a liquid droplet ejecting surface and ejecting a liquid droplet to a recording medium, a maintenance device disposed at a position opposite to the liquid droplet ejecting surface of the recording head, and a conveying unit which conveys the recording medium between the recording head and the maintenance device. The maintenance device has a liquid housing unit which houses the liquid droplet from the recording head, and a cleaning unit which cleans the liquid droplet ejecting surface of the recording head.Type: GrantFiled: February 17, 2004Date of Patent: October 3, 2006Assignee: Fuji Xerox Co., Ltd.Inventors: Nobuhiro Katsuta, Hiroaki Satoh, Yoshihira Rai, Akira Mihara, Kenichi Kawauchi, Naoki Morita, Hiroshi Ikeda
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Patent number: 7090419Abstract: A recording device for recording an image on a recording medium, the recording device comprising: a recording head having a liquid drop discharging surface for discharging liquid drops toward a recording medium; a liquid receptacle disposed at a position opposing a liquid drop discharging surface of the recording head, and able to accommodate the liquid drops; and a conveying device for conveying the recording medium between the recording head and the liquid receptacle, by a non-electrostatic attraction method.Type: GrantFiled: February 17, 2004Date of Patent: August 15, 2006Assignee: Fuji Xerox Co., Ltd.Inventors: Hiroaki Satoh, Nobuhiro Katsuta, Yoshihira Rai, Akira Mihara, Kenichi Kawauchi, Hiroshi Ikeda, Naoki Morita
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Patent number: 6926385Abstract: A recording apparatus enabling printing with high image quality is to be provided. In a recording apparatus exerting recordation having a non-scanning recording head corresponding to the total width of the paper, a pressing member and a supporting member are disposed among plural recording head units, which are arranged in the width direction of the paper with a prescribed interval, and thus the paper continuously conveyed is pressed with the pressing member onto the supporting member, so as to uniformize the distance between the paper and the nozzle surface at the printing position. As a result, printing can be attained with high image quality on the paper continuously conveyed.Type: GrantFiled: September 15, 2003Date of Patent: August 9, 2005Assignee: Fuji Xerox Co., Ltd.Inventors: Yoshihira Rai, Hiroaki Satoh, Nobuhiro Katsuta, Kenichi Kawauchi, Akira Mihara, Hiroshi Ikeda, Naoki Morita
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Publication number: 20050057603Abstract: The present invention provides a maintenance device which can suction ink in a short period of time and with a small amount of consumed ink. The maintenance device has a plurality of capping portions disposed so as to face a plurality of unit heads which can discharge liquid drops onto a recording medium; a plurality of small chambers communicating with the plurality of capping portions, respectively; a suction portion suctioning interiors of the small chambers; and a plurality of valve mechanisms independently controlling airtight states of the interiors of the small chambers. The present invention also provides a recording device equipped with this maintenance device.Type: ApplicationFiled: July 16, 2004Publication date: March 17, 2005Inventors: Susumu Hirakata, Yoshihira Rai, Nobuhiro Katsuta, Hiroaki Satoh
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Publication number: 20040227785Abstract: A recording apparatus contains a recording head having a liquid droplet ejecting surface and ejecting a liquid droplet to a recording medium, a maintenance device disposed at a position opposite to the liquid droplet ejecting surface of the recording head, and a conveying unit which conveys the recording medium between the recording head and the maintenance device. The maintenance device has a liquid housing unit which houses the liquid droplet from the recording head, and a cleaning unit which cleans the liquid droplet ejecting surface of the recording head.Type: ApplicationFiled: February 17, 2004Publication date: November 18, 2004Applicant: FUJI XEROX CO., LTD.Inventors: Nobuhiro Katsuta, Hiroaki Satoh, Yoshihira Rai, Akira Mihara, Kenichi Kawauchi, Naoki Morita, Hiroshi Ikeda
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Publication number: 20040179062Abstract: A recording apparatus enabling printing with high image quality is to be provided. In a recording apparatus exerting recordation having a non-scanning recording head corresponding to the total width of the paper, a pressing member and a supporting member are disposed among plural recording head units, which are arranged in the width direction of the paper with a prescribed interval, and thus the paper continuously conveyed is pressed with the pressing member onto the supporting member, so as to uniformize the distance between the paper and the nozzle surface at the printing position. As a result, printing can be attained with high image quality on the paper continuously conveyed.Type: ApplicationFiled: September 15, 2003Publication date: September 16, 2004Applicant: FUJI XEROX CO., LTD.Inventors: Yoshihira Rai, Hiroaki Satoh, Nobuhiro Katsuta, Kenichi Kawauchi, Akira Mihara, Hiroshi Ikeda, Naoki Morita