Patents by Inventor Goki Inukai
Goki Inukai 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: 10732540Abstract: A developing roller having a rubber elastomer layer on the outer periphery of a shaft core metal, having a coating layer formed from a binder (A) and silicone rubber particles (B) on the surface of the rubber elastomer, and having an electrostatic capacitance of 4 to 20 nF; wherein the binder (A) is formed from a diluting solvent solution of a terminal hydroxyl group-containing prepolymer (a) obtained by reaction of an isocyanate compound, an isocyanurate modified product thereof and a reactive silicone oil, and an isocyanate compound and/or an isocyanurate modified product thereof (b). This developing roller suppresses banding by suppressing electrostatic capacitance even if the nip width between the developing roll and the photoreceptor changes due to distortion of peripheral members in the development apparatus, and stick slip (vibration) of gears.Type: GrantFiled: June 12, 2018Date of Patent: August 4, 2020Assignee: NOK CORPORATIONInventors: Atsushi Ikeda, Hiroaki Kaneda, Tomohiro Kondo, Goki Inukai
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Publication number: 20200125003Abstract: A developing roller having a rubber elastomer layer on the outer periphery of a shaft core metal, having a coating layer formed from a binder (A) and silicone rubber particles (B) on the surface of the rubber elastomer, and having an electrostatic capacitance of 4 to 20 nF; wherein the binder (A) is formed from a diluting solvent solution of a terminal hydroxyl group-containing prepolymer (a) obtained by reaction of an isocyanate compound, an isocyanurate modified product thereof and a reactive silicone oil, and an isocyanate compound and/or an isocyanurate modified product thereof (b). This developing roller suppresses banding by suppressing electrostatic capacitance even if the nip width between the developing roll and the photoreceptor changes due to distortion of peripheral members in the development apparatus, and stick slip (vibration) of gears.Type: ApplicationFiled: June 12, 2018Publication date: April 23, 2020Inventors: Atsushi IKEDA, Hiroaki KANEDA, Tomohiro KONDO, Goki INUKAI
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Patent number: 10466615Abstract: A rubber member for coating a developing roll which is obtained by coating a coating layer component around a developing roll having a rubber substrate layer and curing the coating layer component is described. The coating layer component contains: (A) a liquid binder containing at least a polyol, an isocyanate compound and reactive silicone oil; (B) silicone rubber particles having a hardness according to JIS K6253: 1997 by Durometer A, measured instantaneously, of 20 to 80 degrees, and a rubber particle size of 0.2 to 10 pm; and a diluting solvent. A ratio of a thickness of the coating layer after curing and a particle size of the rubber satisfies: the rubber particle size/a coating layer thickness <0.3.Type: GrantFiled: November 6, 2014Date of Patent: November 5, 2019Assignees: NOK Corporation, Synztec Co. Ltd.Inventors: Toshihiro Higashira, Atsushi Ikeda, Nozomu Suzuki, Tomohiro Kondo, Shinobu Kanzaki, Goki Inukai, Lei Wang, Huu Viet Nguyen
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Publication number: 20170045840Abstract: An object is to provide a rubber member for coating a developing roll which is formed a uniform rough surface at a surface of the developing roll, does exert neither damage nor toner stress to the mating member or the toner while maintaining flexibility, is possible to secure a thickness which can sufficiently avoid the effect of the rubber, and can realize non-tackiness and low friction, which can be solved by a rubber member for coating a developing roll which is the rubber member for coating a developing roll obtained by coating a coating layer 13 component at around a developing roll having a rubber substrate layer 12 and curing the same, wherein the coating layer 13 component comprises a liquid binder which contains at least a polyol, an isocyanate compound and reactive silicone oil, silicone rubber particles 101 having a hardness (JIS K6253: 1997) by Durometer A (instantaneous) of 20 to 80 degree and a rubber particle size of 0.Type: ApplicationFiled: November 6, 2014Publication date: February 16, 2017Applicants: NOK Corporation, Synztec Co., Ltd.Inventors: Toshihiro HIGASHIRA, Atsushi IKEDA, Nozomu SUZUKI, Tomohiro KONDO, Shinobu KANZAKI, Goki INUKAI, Lei WANG, Huu Viet NGUYEN
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Patent number: 7212776Abstract: A fixing belt for fixing the toner image on a recording medium includes an electroformed nickel endless belt body. The belt body exhibits hardness higher at the rear surface than at the front surface after heated at 350° C.Type: GrantFiled: October 13, 2004Date of Patent: May 1, 2007Assignee: Nitto Kogyo Co., Ltd.Inventors: Masao Takagi, Goki Inukai
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Patent number: 7022417Abstract: A metal belt of the present invention is formed to be endless by electroforming, has a crystal orientation in which a crystal orientation ratio I(200)/I(111) is not less than 80 and not more than 250, mainly contains nickel, and has an excellent durability.Type: GrantFiled: November 17, 2003Date of Patent: April 4, 2006Assignee: Nitto Kogyo Co., Ltd.Inventors: Masao Takagi, Goki Inukai
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Publication number: 20050142351Abstract: A fixing belt for fixing a toner image on a transfer medium is provided with an-endless belt body formed of electroformed nickel composed of crystallites oriented on crystal orientation planes. With respect to those crystallites on the crystal plain which have average grain diameter greatly changed by heating, a change ratio of average grain diameter after heating at 250° C. for 2 hours is not larger than 110% based on average grain diameter before heating.Type: ApplicationFiled: December 21, 2004Publication date: June 30, 2005Applicant: NITTO KOGYO CO., LTDInventors: Masao Takagi, Goki Inukai
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Publication number: 20050084303Abstract: A fixing belt for fixing the toner image on a recording medium includes an electroformed nickel endless belt body. The belt body exhibits hardness higher at the rear surface than at the front surface after heated at 350° C.Type: ApplicationFiled: October 13, 2004Publication date: April 21, 2005Applicant: NITTO KOGYO CO., LTD.Inventors: Masao Takagi, Goki Inukai
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Patent number: 6792237Abstract: The present invention provides a fixing belt adapted to move circularly and cooperate with a pressing member to form a nip region for fixing an unfixed toner image on a recording medium, capable of achieving a desirably enhanced durability even under high-temperature atmosphere. The fixing belt comprises a substrate formed of an endless-shaped electroformed sheet consisting essentially of a nickel-carbon alloy containing 0.05 to 0.12 mass % of carbon. The carbon content may be adjusted in proportion to the amount of a secondary brightening agent to be added to an electrolytic bath or to a cathode current density to be sent to the electrolytic bath. The secondary brightening agent may be 2-butyne-1,4-diol. In the fixing belt of the present invention, the substrate may have a surface provided with a releasing layer which may be formed as a single layer or multilayer made of a material having heat resistance and non-adhesive, such as silicone rubber, fluorine rubber, fluororesin, or their mixture.Type: GrantFiled: April 11, 2003Date of Patent: September 14, 2004Assignee: Nitto Koygo Co., Ltd.Inventors: Masao Takagi, Goki Inukai
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Publication number: 20040105996Abstract: A metal belt of the present invention is formed to be endless by electroforming, has a crystal orientation in which a crystal orientation ratio I(200)/I(111) is not less than 80 and not more than 250, mainly contains nickel, and has an excellent durability.Type: ApplicationFiled: November 17, 2003Publication date: June 3, 2004Applicant: NITTO KOGYO CO., LTD.Inventors: Masao Takagi, Goki Inukai
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Patent number: 6647238Abstract: The present invention provides a fixing belt adapted to move circularly and cooperate with a pressing member to form a nip region for fixing an unfixed toner image on a recording medium, capable of achieving a desirably enhanced durability even under high-temperature atmosphere. The fixing belt comprises a substrate formed of an endless-shaped electroformed sheet consisting of a nickel-carbon alloy containing 0.05 to 0.12 mass % of carbon. The carbon content may be adjusted in proportion to the amount of a secondary brightening agent to be added to an electrolytic bath or to a cathode current density to be sent to the electrolytic bath. The secondary brightening agent may be 2-butyne-1,4-diol. In the fixing belt of the present invention, the substrate may have a surface provided with a releasing layer which may be formed as a single layer or multilayer made of a material having heat resistance and non-adhesive, such as silicone rubber, fluorine rubber, fluororesin, or their mixture.Type: GrantFiled: August 7, 2002Date of Patent: November 11, 2003Assignee: Nitto Kogyo Co., Ltd.Inventors: Masao Takagi, Goki Inukai
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Publication number: 20030185603Abstract: The present invention provides a fixing belt adapted to move circularly and cooperate with a pressing member to form a nip region for fixing an unfixed toner image on a recording medium, capable of achieving a desirably enhanced durability even under high-temperature atmosphere. The fixing belt comprises a substrate formed of an endless-shaped electroformed sheet consisting of a nickel-carbon alloy containing 0.05 to 0.12 mass % of carbon. The carbon content may be adjusted in proportion to the amount of a secondary brightening agent to be added to an electrolytic bath or to a cathode current density to be sent to the electrolytic bath. The secondary brightening agent may be 2-butyne-1,4-diol. In the fixing belt of the present invention, the substrate may have a surface provided with a releasing layer which may be formed as a single layer or multilayer made of a material having heat resistance and non-adhesive, such as silicone rubber, fluorine rubber, fluororesin, or their mixture.Type: ApplicationFiled: August 7, 2002Publication date: October 2, 2003Applicant: NITTO KOGYO CO., LTD.Inventors: Masao Takagi, Goki Inukai
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Publication number: 20030185606Abstract: The present invention provides a fixing belt adapted to move circularly and cooperate with a pressing member to form a nip region for fixing an unfixed toner image on a recording medium, capable of achieving a desirably enhanced durability even under high-temperature atmosphere. The fixing belt comprises a substrate formed of an endless-shaped electroformed sheet consisting essentially of a nickel-carbon alloy containing 0.05 to 0.12 mass % of carbon. The carbon content may be adjusted in proportion to the amount of a secondary brightening agent to be added to an electrolytic bath or to a cathode current density to be sent to the electrolytic bath. The secondary brightening agent may be 2-butyne-1,4-diol. In the fixing belt of the present invention, the substrate may have a surface provided with a releasing layer which may be formed as a single layer or multilayer made of a material having heat resistance and non-adhesive, such as silicone rubber, fluorine rubber, fluororesin, or their mixture.Type: ApplicationFiled: April 11, 2003Publication date: October 2, 2003Applicant: NITTO KOGYO CO., LTD.Inventors: Masao Takagi, Goki Inukai