Patents by Inventor Wataru Nemoto
Wataru Nemoto 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: 11966181Abstract: A tubular fuser device rotates and is in contact with a sheet on which a positively charged toner image is formed to fix the toner image to the sheet. The fuser device includes a tubular substrate made of a metal, a rubber layer covering the outer periphery of the substrate, an adhesion layer covering the outer periphery of the rubber layer, and a surface layer made of a resin covering the outer periphery of the adhesion layer. The adhesion layer has a first adhesion layer that is in contact with the rubber layer and a second adhesion layer interposed between the first adhesion layer and the surface layer. The first adhesion layer is made of a fluororesin-based adhesive, and the second adhesion layer is made of a silicone rubber-based adhesive containing an ionic conductor.Type: GrantFiled: March 19, 2021Date of Patent: April 23, 2024Assignee: NOK CORPORATIONInventors: Wataru Nemoto, Kenji Sasaki, Masaya Suzuki, Hidetomo Mukai
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Publication number: 20230205122Abstract: A tubular fuser device rotates and is in contact with a sheet on which a positively charged toner image is formed to fix the toner image to the sheet. The fuser device includes a tubular substrate made of a metal, a rubber layer covering the outer periphery of the substrate, an adhesion layer covering the outer periphery of the rubber layer, and a surface layer made of a resin covering the outer periphery of the adhesion layer. The adhesion layer has a first adhesion layer that is in contact with the rubber layer and a second adhesion layer interposed between the first adhesion layer and the surface layer. The first adhesion layer is made of a fluororesin-based adhesive, and the second adhesion layer is made of a silicone rubber-based adhesive containing an ionic conductor.Type: ApplicationFiled: March 19, 2021Publication date: June 29, 2023Inventors: Wataru NEMOTO, Kenji SASAKI, Masaya SUZUKI, Hidetomo MUKAI
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Patent number: 11353813Abstract: A tubular fuser device rotates and is in contact with a sheet on which a positively charged toner image is formed to fix the toner image to the sheet. The fuser device includes a tubular substrate made of a metal, a rubber layer covering the outer periphery of the substrate, an adhesion layer covering the outer periphery of the rubber layer, and a surface layer made of a resin covering the outer periphery of the adhesion layer. In the fuser device, a charge decay ?V at a moment 120 seconds after end of charging a surface of the surface layer to ?1 kV is zero, and an electrostatic capacity per unit area C in a thickness direction of the fuser device is equal to or less than 3.30 pF/cm2.Type: GrantFiled: December 27, 2019Date of Patent: June 7, 2022Inventors: Masaya Suzuki, Kenji Sasaki, Wataru Nemoto, Tomohiro Kondo
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Patent number: 11340546Abstract: A tubular fuser device rotates and is in contact with a sheet on which a positively charged toner image is formed to fix the toner image to the sheet. The fuser device includes a tubular substrate made of a metal, a rubber layer covering the outer periphery of the substrate, an adhesion layer covering the outer periphery of the rubber layer, and a surface layer made of a resin covering the outer periphery of the adhesion layer. In the fuser device, C·R/A2 is less than 1.1×10?53 F?/cm4 in which C·R/A2 is a product of an electrostatic capacity per unit area C/A in a thickness direction of the fuser device and an electrical resistance per unit area R/A in the thickness direction of the fuser device.Type: GrantFiled: December 27, 2019Date of Patent: May 24, 2022Inventors: Masaya Suzuki, Kenji Sasaki, Wataru Nemoto, Hidetomo Mukai
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Publication number: 20220050408Abstract: A tubular fuser device rotates and is in contact with a sheet on which a positively charged toner image is formed to fix the toner image to the sheet. The fuser device includes a tubular substrate made of a metal, a rubber layer covering the outer periphery of the substrate, an adhesion layer covering the outer periphery of the rubber layer, and a surface layer made of a resin covering the outer periphery of the adhesion layer. In the fuser device, C·R/A2 is less than 1.1×10?3 F?/cm4 in which C·R/A2 is a product of an electrostatic capacity per unit area C/A in a thickness direction of the fuser device and an electrical resistance per unit area R/A in the thickness direction of the fuser device.Type: ApplicationFiled: December 27, 2019Publication date: February 17, 2022Inventors: Masaya SUZUKI, Kenji SASAKI, Wataru NEMOTO, Hidetomo MUKAI
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Publication number: 20210341862Abstract: A tubular fuser device rotates and is in contact with a sheet on which a positively charged toner image is formed to fix the toner image to the sheet. The fuser device includes a tubular substrate made of a metal, a rubber layer covering the outer periphery of the substrate, an adhesion layer covering the outer periphery of the rubber layer, and a surface layer made of a resin covering the outer periphery of the adhesion layer. In the fuser device, a charge decay ?V at a moment 120 seconds after end of charging a surface of the surface layer to ?1 kV is zero, and an electrostatic capacity per unit area C in a thickness direction of the fuser device is equal to or less than 3.30 pF/cm2.Type: ApplicationFiled: December 27, 2019Publication date: November 4, 2021Inventors: Masaya SUZUKI, Kenji SASAKI, Wataru NEMOTO, Tomohiro KONDO
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Publication number: 20200010636Abstract: This pressure-sensitive elastomer porous body is a cured product of an elastomer emulsion, which is obtained via an emulsion composition including, as a continuous phase, a liquid rubber material which is cured to form an elastomer, wherein a conductive agent is contained in an amount of 2.7-3.5 wt % with respect to the total amount of the emulsion composition, and the electric resistance value (?) rises as the compression ratio C (%) increases.Type: ApplicationFiled: August 9, 2018Publication date: January 9, 2020Inventor: Wataru NEMOTO
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Patent number: 10082753Abstract: The invention provides a fixation member having a fluororesin tube serving as a release layer which attains both suitable electrical conductivity and high releasability. The fixation member (fixation tube) has a release layer on the surface thereof. The release layer is formed of a fluororesin tube containing carbon. The fluororesin tube has a percent dielectric relaxation of 1.0% to 5.0% or an optical transmission density of 1 to 4. The fluororesin tube preferably has a dielectric constant of 2.15 to 2.5.Type: GrantFiled: November 17, 2016Date of Patent: September 25, 2018Assignee: SYNZTEC CO., LTD.Inventors: Masayuki Goto, Wataru Nemoto, Tadashi Hasegawa, Masaya Suzuki
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Publication number: 20180181038Abstract: An object of the invention is to provide a fixation member which has an unfixed toner fixation function and ensures high releasability, low chargeability, and high friction. The fixation member has an elastic layer, and a release layer on the external surface of the elastic layer, wherein the release layer is formed of a fluororesin tube having low chargeability and a percent dielectric relaxation of 15% or higher.Type: ApplicationFiled: December 14, 2017Publication date: June 28, 2018Inventors: Wataru NEMOTO, Tadashi HASEGAWA
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Publication number: 20170139359Abstract: The invention provides a fixation member having a fluororesin tube serving as a release layer which attains both suitable electrical conductivity and high releasability. The fixation member (fixation tube) has a release layer on the surface thereof. The release layer is formed of a fluororesin tube containing carbon. The fluororesin tube has a percent dielectric relaxation of 1.0% to 5.0% or an optical transmission density of 1 to 4. The fluororesin tube preferably has a dielectric constant of 2.15 to 2.5.Type: ApplicationFiled: November 17, 2016Publication date: May 18, 2017Inventors: Masayuki GOTO, Wataru NEMOTO, Tadashi HASEGAWA, Masaya SUZUKI
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Patent number: 9091982Abstract: The invention provides a fixing pressure roller having an elastic layer formed of a porous material produced from an emulsion, the roller having improved durability. The fixing pressure roller has a core, a rubber layer which has a thickness of 1.0 mm or less and which is provided around the core, and an elastic layer which is formed of a porous elastomer produced from an emulsion composition and which is provided around the rubber layer, the emulsion composition having a continuous phase of a liquid rubber material which forms an elastomer through curing.Type: GrantFiled: April 24, 2013Date of Patent: July 28, 2015Assignees: NOK CORPORATION, SYNZTEC CO., LTD.Inventors: Shingo Sugiyama, Junichi Nakayama, Wataru Nemoto, Atsushi Ikeda
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Publication number: 20130287461Abstract: The invention provides a fixing pressure roller having an elastic layer formed of a porous material produced from an emulsion, the roller having improved durability. The fixing pressure roller has a core, a rubber layer which has a thickness of 1.0 mm or less and which is provided around the core, and an elastic layer which is formed of a porous elastomer produced from an emulsion composition and which is provided around the rubber layer, the emulsion composition having a continuous phase of a liquid rubber material which forms an elastomer through curing.Type: ApplicationFiled: April 24, 2013Publication date: October 31, 2013Applicants: SYNZTEC CO., LTD., NOK CORPORATIONInventors: Shingo SUGIYAMA, Junichi NAKAYAMA, Wataru NEMOTO, Atsushi IKEDA
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Patent number: 8222309Abstract: In the elastomer porous material of the invention, when cells in a first observation region of a first cross section are observed at a certain magnification, cells having an aspect ratio a/b, wherein a represents the maximum diameter of each cell and b represents the length of the minor axis of that cell as measured in a direction orthogonal thereto, of 1.3 or less account for 70% or more of all cells in the first observation region, and, when cells in a second observation region of a second cross section orthogonal to the first cross section are observed at a certain magnification, cells having an aspect ratio a/b, wherein a represents the maximum diameter of each cell and b represents the length of the minor axis of that cell as measured in a direction orthogonal thereto, of 1.3 or less account for 70% or more of all cells in the second observation region.Type: GrantFiled: December 1, 2008Date of Patent: July 17, 2012Assignee: Synztec Co, Ltd.Inventors: Wataru Nemoto, Kazuya Takato, Asuka Koyanagi, Jun Ogawa, Atsushi Ikeda
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Patent number: 8217090Abstract: In the elastomer porous material of the invention, when cells in a first observation region of a first cross section are observed at a certain magnification, cells having a shape factor SF2, which indicates the remoteness from complete roundness and is represented by the following formula: SF ? ? 2 = P 2 4 ? ? ? ? A × 100 (wherein A represents the area of each cell, and P represents the perimeter length thereof), of 130 or less account for 80% or more of all cells in the first observation region, and, when cells in a second observation region of a second cross section orthogonal to the first cross section are observed at a certain magnification, cells having a shape factor SF2, which indicates the remoteness from complete roundness and is represented by the same formula (wherein A represents the area of each cell, and P represents the perimeter length thereof), of 130 or less account for 80% or more of all cells in the second observation region.Type: GrantFiled: December 1, 2008Date of Patent: July 10, 2012Assignee: Synztec Co., Ltd.Inventors: Wataru Nemoto, Kazuya Takato, Asuka Koyanagi, Jun Ogawa, Atsushi Ikeda
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Patent number: 8217089Abstract: In the elastomer porous material of the invention, when cells in a first observation region of a first cross section are observed at a certain magnification, cells having a shape factor SF1, which indicates the roundness of a circle and is represented by the following formula: SF ? ? 1 = ? ? ? a 2 4 ? A × 100 (wherein a represents the length of major axis of each cell, and A represents the area thereof), of 150 or less account for 80% or more of all cells in the first observation region, and, when cells in a second observation region of a second cross section orthogonal to the first cross section are observed at a certain magnification, cells having a shape factor SF1, which indicates the roundness of a circle and is represented by the same formula (wherein a represents the length of major axis of each cell, and A represents the area thereof), of 150 or less account for 80% or more of all cells in the second observation region.Type: GrantFiled: December 1, 2008Date of Patent: July 10, 2012Assignee: Synztec Co., Ltd.Inventors: Wataru Nemoto, Kazuya Takato, Asuka Koyanagi, Jun Ogawa, Atsushi Ikeda
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Publication number: 20100311851Abstract: In the elastomer porous material of the invention, when cells in a first observation region of a first cross section are observed at a certain magnification, cells having an aspect ratio a/b, wherein a represents the maximum diameter of each cell and b represents the length of the minor axis of that cell as measured in a direction orthogonal thereto, of 1.3 or less account for 70% or more of all cells in the first observation region, and, when cells in a second observation region of a second cross section orthogonal to the first cross section are observed at a certain magnification, cells having an aspect ratio a/b, wherein a represents the maximum diameter of each cell and b represents the length of the minor axis of that cell as measured in a direction orthogonal thereto, of 1.3 or less account for 70% or more of all cells in the second observation region.Type: ApplicationFiled: December 1, 2008Publication date: December 9, 2010Applicant: SYNZTEC CO., LTDInventors: Wataru Nemoto, Kazuya Takato, Asuka Koyanagi, Jun Ogawa, Atsushi Ikeda
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Publication number: 20100305225Abstract: In the elastomer porous material of the invention, when cells in a first observation region of a first cross section are observed at a certain magnification, cells having a shape factor SF2, which indicates the remoteness from complete roundness and is represented by the following formula: SF ? ? 2 = P 2 4 ? ? ? ? A × 100 (wherein A represents the area of each cell, and P represents the perimeter length thereof), of 130 or less account for 80% or more of all cells in the first observation region, and, when cells in a second observation region of a second cross section orthogonal to the first cross section are observed at a certain magnification, cells having a shape factor SF2, which indicates the remoteness from complete roundness and is represented by the same formula (wherein A represents the area of each cell, and P represents the perimeter length thereof), of 130 or less account for 80% or more of all cells in the second observation region.Type: ApplicationFiled: December 1, 2008Publication date: December 2, 2010Applicant: SYNZTEC CO., LTD.Inventors: Wataru Nemoto, Kazuya Takato, Asuka Koyanaki, Jun Ogawa, Atsushi Ikeda
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Publication number: 20100272989Abstract: In the elastomer porous material of the invention, when cells in a first observation region of a first cross section are observed at a certain magnification, cells having a shape factor SF1, which indicates the roundness of a circle and is represented by the following formula: SF ? ? 1 = ? ? ? a 2 4 ? A × 100 (wherein a represents the length of major axis of each cell, and A represents the area thereof), of 150 or less account for 80% or more of all cells in the first observation region, and, when cells in a second observation region of a second cross section orthogonal to the first cross section are observed at a certain magnification, cells having a shape factor SF1, which indicates the roundness of a circle and is represented by the same formula (wherein a represents the length of major axis of each cell, and A represents the area thereof), of 150 or less account for 80% or more of all cells in the second observation region.Type: ApplicationFiled: December 1, 2008Publication date: October 28, 2010Applicant: SYNZTEC CO., LTD.Inventors: Wataru Nemoto, Kazuya Takato, Asuka Koyanagi, Jun Ogawa, Atsushi Ikeda