Patents by Inventor Hiromi Kamimura
Hiromi Kamimura 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).
-
Patent number: 8911576Abstract: A fluororesin coating layer fusion-bonded directly to a base member or to a rubber layer on a base member can be formed by conducting heating for a significantly short time. A fluororesin-coated roller or belt that has a fluororesin coating layer with few defects and a rubber layer underneath whose thermal deterioration is suppressed is provided. The production method therefor include a step of inserting a base member or a rubber-coated base member including a base member and at least a rubber layer on the outer peripheral surface of the base member into an empty space of a thermally shrinkable fluororesin tube; a preliminary shrinking step conducted according to need; a pressure fusion-bonding step of bringing the base member or rubber-coated base member into contact with a hot plate surface heated to a temperature in a range of 250° C. to 400° C.Type: GrantFiled: November 9, 2010Date of Patent: December 16, 2014Assignee: Sumitomo Electric Fine Polymer, Inc.Inventors: Hiromi Kamimura, Masahiro Habuka, Shingo Harada, Yasuhiro Fukumoto
-
Patent number: 8801883Abstract: A method for producing a fixing-unit member including a base, a rubber elastic layer, and a PFA layer includes a step of forming a primer layer by applying a primer containing a low-melting fluorocarbon resin to the outer circumferential surface of a rubber roller having the rubber elastic layer on the outer circumferential surface of the base; a step of sheathing the rubber roller with a thermally shrinkable tube formed by diametrically expanding a PFA tube so as to have an inner diameter more than the outer diameter of the rubber roller; a step of forming the PFA layer from the thermally shrinkable tube by heating the thermally shrinkable tube so as to be thermally shrunken and fused with the rubber roller; and a reheating step of heating the PFA layer to a temperature equal to or higher than the melting point of the PFA contained in the PFA layer.Type: GrantFiled: March 17, 2011Date of Patent: August 12, 2014Assignee: Sumitomo Electric Fine Polymer, Inc.Inventors: Yasuhiro Fukumoto, Hiromi Kamimura, Shingo Harada, Naoki Yokota
-
Patent number: 8498564Abstract: A fixing roller/fixing belt having an elastic layer and a surface layer formed on a substrate material in the enumerated order, wherein the surface layer is a layer formed by thermally shrinking a PFA tube, and the surface layer and the elastic layer are bonded together through a PFA-containing adhesive material. In particular, a fixing roller/fixing belt in which the ratio of heat shrinkage of the PFA tube forming the surface layer is 3 to 20%. Also, a fixing roller/fixing belt, in which the quantity of PFA contained in the PFA-containing adhesive material is 20 to 30 wt %.Type: GrantFiled: April 11, 2008Date of Patent: July 30, 2013Assignee: Sumitomo Electric Fine Polymer, Inc.Inventors: Hiromi Kamimura, Yoshimasa Suzuki, Kazuhiro Kizawa
-
Patent number: 8445090Abstract: Provided is a fixing belt which has high thermal conductivity capable of achieving an excellent fixing property that can respond to the recent increase in printing speed, which has a proper degree of elasticity such that color toners are sufficiently enveloped so as to be melted and mixed, and which has excellent mechanical strength and durability. A fixing belt includes a tubular base member, an elastic layer disposed on the outer circumferential side of the base member, and a surface layer disposed on a surface on the outer circumferential side of the elastic layer, the fixing belt being characterized in that the elastic layer is composed of rubber into which a filler primarily composed of silicon carbide powder and a carbon nanotube are compounded, and the formulae 10X+3Y<750, 3X+30Y>170, X>10, and Y>0.1 are satisfied, where X is the percent by volume of the filler and Y is the percent by volume of the carbon nanotube in the elastic layer.Type: GrantFiled: January 12, 2011Date of Patent: May 21, 2013Assignees: Sumitomo Electric Industries, Ltd., Sumitomo Electric Fine Polymer, Inc.Inventors: Shingo Nakajima, Jun Sugawara, Hiromi Kamimura, Masatoshi Ishikawa
-
Publication number: 20120222796Abstract: A fluororesin coating layer fusion-bonded directly to a base member or to a rubber layer on a base member can be formed by conducting heating for a significantly short time. A fluororesin-coated roller or belt that has a fluororesin coating layer with few defects and a rubber layer underneath whose thermal deterioration is suppressed is provided. The production method therefor include a step of inserting a base member or a rubber-coated base member including a base member and at least a rubber layer on the outer peripheral surface of the base member into an empty space of a thermally shrinkable fluororesin tube; a preliminary shrinking step conducted according to need; a pressure fusion-bonding step of bringing the base member or rubber-coated base member into contact with a hot plate surface heated to a temperature in a range of 250° C. to 400° C.Type: ApplicationFiled: November 9, 2010Publication date: September 6, 2012Applicant: SUMITOMO ELECTRIC FINE POLYMER, INC.Inventors: Hiromi Kamimura, Masahiro Habuka, Shingo Harada, Yasuhiro Fukumoto
-
Publication number: 20120170958Abstract: Provided is a fixing belt which has high thermal conductivity capable of achieving an excellent fixing property that can respond to the recent increase in printing speed, which has a proper degree of elasticity such that color toners are sufficiently enveloped so as to be melted and mixed, and which has excellent mechanical strength and durability. A fixing belt includes a tubular base member, an elastic layer disposed on the outer circumferential side of the base member, and a surface layer disposed on a surface on the outer circumferential side of the elastic layer, the fixing belt being characterized in that the elastic layer is composed of rubber into which a filler primarily composed of silicon carbide powder and a carbon nanotube are compounded, and the formulae 10X+3Y<750, 3X+30Y>170, X>10, and Y>0.1 are satisfied, where X is the percent by volume of the filler and Y is the percent by volume of the carbon nanotube in the elastic layer.Type: ApplicationFiled: January 12, 2011Publication date: July 5, 2012Applicants: Sumitomo Electric Fine Polymer, Inc., Sumitomo Electric Industries, Ltd.Inventors: Shingo Nakajima, Jun Sugawara, Hiromi Kamimura, Masatoshi Ishikawa
-
Publication number: 20110236691Abstract: A method for producing a fixing-unit member including a base, a rubber elastic layer, and a PFA layer includes a step of forming a primer layer by applying a primer containing a low-melting fluorocarbon resin to the outer circumferential surface of a rubber roller having the rubber elastic layer on the outer circumferential surface of the base; a step of sheathing the rubber roller with a thermally shrinkable tube formed by diametrically expanding a PFA tube so as to have an inner diameter more than the outer diameter of the rubber roller; a step of forming the PFA layer from the thermally shrinkable tube by heating the thermally shrinkable tube so as to be thermally shrunken and fused with the rubber roller; and a reheating step of heating the PFA layer to a temperature equal to or higher than the melting point of the PFA contained in the PFA layer.Type: ApplicationFiled: March 17, 2011Publication date: September 29, 2011Applicant: SUMITOMO ELECTRIC FINE POLYMER, INC.Inventors: Yasuhiro FUKUMOTO, Hiromi KAMIMURA, Shingo HARADA, Naoki YOKOTA
-
Publication number: 20100104335Abstract: A fixing roller/fixing belt having an elastic layer and a surface layer formed on a substrate material in the enumerated order, wherein the surface layer is a layer formed by thermally shrinking a PFA tube, and the surface layer and the elastic layer are bonded together through a PFA-containing adhesive material. In particular, a fixing roller/fixing belt in which the ratio of heat shrinkage of the PFA tube forming the surface layer is 3 to 20%. Also, a fixing roller/fixing belt, in which the quantity of PFA contained in the PFA-containing adhesive material is 20 to 30 wt %.Type: ApplicationFiled: April 11, 2008Publication date: April 29, 2010Applicant: Sumitomo Electric Fine Polymer, Inc.Inventors: Hiromi Kamimura, Yoshimasa Suzuki, Kazuhiro Kizawa