Patents by Inventor Kiyoshi Iwai
Kiyoshi Iwai 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: 9864313Abstract: A fixing device includes a first belt that heats a developer image on a recording medium; a support member that is arranged inside the first belt and supports the first belt; a second belt that sandwiches the recording medium with the first belt; a pressing roller that is provided with the second belt having an inner peripheral surface wound thereon, is provided rotatably in a direction orthogonal to a recording-medium transport direction as an axial direction, presses the second and first belts toward the support member, and forms a first press region; and a forming member that is provided inside the second belt, at an upstream side in the transport direction with respect to the pressing roller, presses the second and first belts toward the support member, and forms a second press region having a larger width than that of the first press region in the transport direction.Type: GrantFiled: August 23, 2016Date of Patent: January 9, 2018Assignee: FUJI XEROX CO., LTD.Inventors: Kyogo Soshi, Kiyoshi Iwai, Yasutaka Gotoh, Sou Morizaki, Jouta Kobayashi, Hiroko Furukata
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Publication number: 20170255145Abstract: A fixing device includes a first belt that heats a developer image on a recording medium; a support member that is arranged inside the first belt and supports the first belt; a second belt that sandwiches the recording medium with the first belt; a pressing roller that is provided with the second belt having an inner peripheral surface wound thereon, is provided rotatably in a direction orthogonal to a recording-medium transport direction as an axial direction, presses the second and first belts toward the support member, and forms a first press region; and a forming member that is provided inside the second belt, at an upstream side in the transport direction with respect to the pressing roller, presses the second and first belts toward the support member, and forms a second press region having a larger width than that of the first press region in the transport direction.Type: ApplicationFiled: August 23, 2016Publication date: September 7, 2017Applicant: FUJI XEROX CO., LTD.Inventors: Kyogo SOSHI, Kiyoshi IWAI, Yasutaka GOTOH, Sou MORIZAKI, Jouta KOBAYASHI, Hiroko FURUKATA
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Patent number: 9098038Abstract: An image forming apparatus includes a fixing device, a number-of-revolutions determining unit, and a stopping unit. The fixing device includes a toner image forming unit that forms a toner image, a fixing member that fixes toner to a recording medium, a pressure member that conveys the recording medium, a driving unit that rotates the pressure member to allow the fixing member to perform slave rotation, and a number-of-revolutions sensing unit that senses the number of revolutions of the fixing member. The number-of-revolutions determining unit determines, based on the number of revolutions of the fixing member sensed by the number-of-revolutions sensing unit, the number of revolutions of the driving unit. The stopping unit stops the driving unit when the number of revolutions determined by the number-of-revolutions determining unit is not equal to a specific number of revolutions.Type: GrantFiled: January 30, 2013Date of Patent: August 4, 2015Assignee: FUJI XEROX CO., LTD.Inventors: Kiyoshi Iwai, Tsuyoshi Sunohara
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Patent number: 8892017Abstract: A fixing device includes a magnetic-field generating unit that generates a magnetic field; a substantially cylindrical fixing rotational body that faces the magnetic-field generating unit, generates heat by electromagnetic induction of the magnetic field, and melts and fixes a developer image to a recording medium; a temperature-sensitive contact part that contacts an inner side of the fixing rotational body, and faces the magnetic-field generating unit, its permeability decreasing if its temperature becomes a permeability-change start temperature or higher; and a temperature-sensitive non-contact part arranged at the inner side of the fixing rotational body to face the magnetic-field generating unit in a range different from the contact part, and spaced from the fixing rotational body. An angle defined by the contact part and the center of the fixing rotational body is 60° or larger.Type: GrantFiled: May 25, 2012Date of Patent: November 18, 2014Assignee: Fuji Xerox Co., Ltd.Inventors: Eiichiro Tokuhiro, Kiyoshi Iwai
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Patent number: 8732939Abstract: An electronic component capable of preventing the occurrence of magnetic saturation due to a magnetic flux surrounding each coil conductor and a method of manufacturing the electronic component are provided. The electronic component includes a laminate formed by stacking unit layers, where each unit layer includes a first insulating layer, and a coil conductor and second insulating layer formed on the first insulating layer. Each second insulating layer has a Ni content greater than a Ni content of each first insulating layer. Portions of the first insulating layers have a Ni content lower than a Ni content of the second portions after the laminate is calcined.Type: GrantFiled: December 20, 2011Date of Patent: May 27, 2014Assignee: Murata Manufacturing Co., Ltd.Inventor: Kiyoshi Iwai
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Patent number: 8712301Abstract: A fixing device includes a fixing member that includes a conductive layer and fixes toner on a recording material with heat generated in the conductive layer by electromagnetic induction; a magnetic-field-producing member that produces an alternating-current magnetic field when an alternating current is supplied to the magnetic-field-producing member, the alternating-current magnetic field intersecting the conductive layer; a first support member that faces the magnetic-field-producing member and has a first projection which projects toward the magnetic-field-producing member, the first support member supporting the magnetic-field-producing member at the first projection; and a second support member that faces the first support member with the magnetic-field-producing member interposed therebetween, the second support member supporting the magnetic-field-producing member by pressing the magnetic-field-producing member against the first support member.Type: GrantFiled: November 9, 2011Date of Patent: April 29, 2014Assignee: Fuji Xerox Co., Ltd.Inventor: Kiyoshi Iwai
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Publication number: 20140010563Abstract: An image forming apparatus includes a fixing device, a number-of-revolutions determining unit, and a stopping unit. The fixing device includes a toner image forming unit that forms a toner image, a fixing member that fixes toner to a recording medium, a pressure member that conveys the recording medium, a driving unit that rotates the pressure member to allow the fixing member to perform slave rotation, and a number-of-revolutions sensing unit that senses the number of revolutions of the fixing member. The number-of-revolutions determining unit determines, based on the number of revolutions of the fixing member sensed by the number-of-revolutions sensing unit, the number of revolutions of the driving unit. The stopping unit stops the driving unit when the number of revolutions determined by the number-of-revolutions determining unit is not equal to a specific number of revolutions.Type: ApplicationFiled: January 30, 2013Publication date: January 9, 2014Applicant: FUJI XEROX CO., LTD.Inventors: Kiyoshi IWAI, Tsuyoshi SUNOHARA
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Publication number: 20130164055Abstract: A fixing device includes a magnetic-field generating unit that generates a magnetic field; a substantially cylindrical fixing rotational body that faces the magnetic-field generating unit, generates heat by electromagnetic induction of the magnetic field, and melts and fixes a developer image to a recording medium; a temperature-sensitive contact part that contacts an inner side of the fixing rotational body, and faces the magnetic-field generating unit, its permeability decreasing if its temperature becomes a permeability-change start temperature or higher; and a temperature-sensitive non-contact part arranged at the inner side of the fixing rotational body to face the magnetic-field generating unit in a range different from the contact part, and spaced from the fixing rotational body. An angle defined by the contact part and the center of the fixing rotational body is 60° or larger.Type: ApplicationFiled: May 25, 2012Publication date: June 27, 2013Applicant: FUJI XEROX CO., LTD.Inventors: Eiichiro TOKUHIRO, Kiyoshi IWAI
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Publication number: 20120328340Abstract: A fixing device includes a fixing member that includes a conductive layer and fixes toner on a recording material with heat generated in the conductive layer by electromagnetic induction; a magnetic-field-producing member that produces an alternating-current magnetic field when an alternating current is supplied to the magnetic-field-producing member, the alternating-current magnetic field intersecting the conductive layer; a first support member that faces the magnetic-field-producing member and has a first projection which projects toward the magnetic-field-producing member, the first support member supporting the magnetic-field-producing member at the first projection; and a second support member that faces the first support member with the magnetic-field-producing member interposed therebetween, the second support member supporting the magnetic-field-producing member by pressing the magnetic-field-producing member against the first support member.Type: ApplicationFiled: November 9, 2011Publication date: December 27, 2012Applicant: FUJI XEROX CO., LTD.Inventor: Kiyoshi IWAI
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Publication number: 20120286917Abstract: An electronic component capable of preventing the occurrence of magnetic saturation due to a magnetic flux surrounding each coil conductor and a method of manufacturing the electronic component are provided. The electronic component includes a laminate formed by stacking unit layers, where each unit layer includes a first insulating layer, and a coil conductor and second insulating layer formed on the first insulating layer. Each second insulating layer has a Ni content greater than a Ni content of each first insulating layer. Portions of the first insulating layers have a Ni content lower than a Ni content of the second portions after the laminate is calcined.Type: ApplicationFiled: December 20, 2011Publication date: November 15, 2012Applicant: MURATA MANUFACTURING CO., LTD.Inventors: Katsuyuki UCHIDA, Kiyoshi Iwai
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Publication number: 20120237241Abstract: A fixing device includes a fixing member that fixes a toner image on a recording material, a pressure applying member that is pressed against an outer peripheral surface of the fixing member and forms a press-fixing part therebetween through which the recording material having an unfixed toner image is transported, a heating unit that heats the fixing member, and a pressure-applying-member-moving unit that moves the pressure applying member and changes the pressure applying member between being pressed against the outer peripheral surface of the fixing member and being spaced apart from the outer peripheral surface of the fixing member. The heating unit heats the fixing member at the start of a fixing operation under heating conditions corresponding to a change in the state of the fixing member occurring when the pressure applying member is pressed against the outer peripheral surface of the fixing member by the pressure-applying-member-moving unit.Type: ApplicationFiled: September 30, 2011Publication date: September 20, 2012Applicant: FUJI XEROX CO., LTD.Inventors: Tsuyoshi SUNOHARA, Kazuyoshi ITOH, Shuichi SUZUKI, Yuhei TOMITA, Kiyoshi IWAI
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Patent number: 8270887Abstract: The fixing device includes: a fixing member that includes a conductive layer capable of heating by electromagnetic induction; a magnetic field generating member that generates an alternate-current magnetic field intersecting with the conductive layer of the fixing member; plural magnetic path forming members that form a magnetic path of the alternate-current magnetic field generated by the magnetic field generating member; a support member that supports the magnetic field generating member; an elastic support member that is arranged between the magnetic field generating member and the plural magnetic path forming members so as to be in contact with the plural magnetic path forming members; and a pressing member that presses the plural magnetic path forming members toward the magnetic field generating member.Type: GrantFiled: September 11, 2009Date of Patent: September 18, 2012Assignee: Fuji Xerox Co., Ltd.Inventors: Takayuki Uchiyama, Motoi Noya, Masakatsu Eda, Kiyoshi Iwai, Shuji Yoshikawa, Nobuyoshi Komatsu, Makoto Omata, Tsuyoshi Sunohara, Kazuyoshi Itoh, Motofumi Baba, Shigehiko Haseba, Eiichiro Tokuhiro
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Patent number: 8045907Abstract: The fixing device includes: a fixing member including a conductive layer and fixing toner on a recording medium by electromagnetic induction; a magnetic-field generating member generating an alternate-current magnetic field intersecting with the conductive layer; a magnetic-path forming member that includes a circular arc facing the magnetic-field generating member, that forms a magnetic path of the alternate-current magnetic field, within a range up to a permeability change start temperature, and that allows the alternate-current magnetic field to go through the magnetic-path forming member within a range exceeding the permeability change start temperature; and a support member supporting the magnetic-path forming member. The circular arc shaped portion has an upstream edge in a moving direction of the fixing member and a position of the upstream edge is concaved toward a center of the magnetic path forming member from each of ends of the magnetic path forming member in a longitudinal direction.Type: GrantFiled: September 15, 2009Date of Patent: October 25, 2011Assignee: Fuji Xerox Co., Ltd.Inventor: Kiyoshi Iwai
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Patent number: 7965970Abstract: The fixing device includes: a fixing member including a conductive layer and fixing toner onto a recording medium with the conductive layer self-heated by electromagnetic induction; a drive unit rotationally driving the fixing member; a magnetic field generating member generating an alternate-current magnetic field intersecting with the conductive layer; a magnetic path forming member being in contact with an inner peripheral surface of the fixing member, forming a magnetic path of the alternate-current magnetic field, and transmitting heat to the fixing member by being self-heated by electromagnetic induction; an induction member that is in contact with an inner peripheral surface of the magnetic path forming member, that induces magnetic field lines and that diffuses heat; and an elastic member having force in a direction to press the magnetic path forming member and the induction member against the inner peripheral surface of the fixing member.Type: GrantFiled: September 9, 2009Date of Patent: June 21, 2011Assignee: Fuji Xerox Co., Ltd.Inventors: Shigehiko Haseba, Kiyoshi Iwai, Masakatsu Eda, Motoi Noya, Takayuki Uchiyama
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Publication number: 20100247184Abstract: The fixing device includes: a fixing member including a conductive layer and fixing toner on a recording medium by electromagnetic induction; a magnetic-field generating member generating an alternate-current magnetic field intersecting with the conductive layer; a magnetic-path forming member that includes a circular arc facing the magnetic-field generating member, that forms a magnetic path of the alternate-current magnetic field, within a range up to a permeability change start temperature, and that allows the alternate-current magnetic field to go through the magnetic-path forming member within a range exceeding the permeability change start temperature; and a support member supporting the magnetic-path forming member. The circular arc shaped portion has an upstream edge in a moving direction of the fixing member and a position of the upstream edge is concaved toward a center of the magnetic path forming member from each of ends of the magnetic path forming member in a longitudinal direction.Type: ApplicationFiled: September 15, 2009Publication date: September 30, 2010Inventor: Kiyoshi IWAI
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Publication number: 20100247183Abstract: The fixing device includes: a fixing member including a conductive layer and fixing toner onto a recording medium with the conductive layer self-heated by electromagnetic induction; a drive unit rotationally driving the fixing member; a magnetic field generating member generating an alternate-current magnetic field intersecting with the conductive layer; a magnetic path forming member being in contact with an inner peripheral surface of the fixing member, forming a magnetic path of the alternate-current magnetic field, and transmitting heat to the fixing member by being self-heated by electromagnetic induction; an induction member that is in contact with an inner peripheral surface of the magnetic path forming member, that induces magnetic field lines and that diffuses heat; and an elastic member having force in a direction to press the magnetic path forming member and the induction member against the inner peripheral surface of the fixing member.Type: ApplicationFiled: September 9, 2009Publication date: September 30, 2010Inventors: Shigehiko Haseba, Kiyoshi Iwai, Masakatsu Eda, Motoi Noya, Takayuki Uchiyama
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Publication number: 20100215414Abstract: The fixing device includes: a fixing member that includes a conductive layer capable of heating by electromagnetic induction; a magnetic field generating member that generates an alternate-current magnetic field intersecting with the conductive layer of the fixing member; plural magnetic path forming members that form a magnetic path of the alternate-current magnetic field generated by the magnetic field generating member; a support member that supports the magnetic field generating member; an elastic support member that is arranged between the magnetic field generating member and the plural magnetic path forming members so as to be in contact with the plural magnetic path forming members; and a pressing member that presses the plural magnetic path forming members toward the magnetic field generating member.Type: ApplicationFiled: September 11, 2009Publication date: August 26, 2010Inventors: Takayuki Uchiyama, Motoi NOYA, Masakatsu EDA, Kiyoshi IWAI, Shuji YOSHIKAWA, Nobuyoshi KOMATSU, Makoto OMATA, Tsuyoshi SUNOHARA, Kazuyoshi ITOH, Motofumi BABA, Shigehiko HASEBA, Eiichiro TOKUHIRO
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Patent number: 7214419Abstract: A conductive paste is provided, which has good conductivity and good adhesiveness to substrates and has good long-lasting stability of these properties, and which, when applied to a through-hole of a multi-layered substrate, ensures improved reliability of bonding to the end faces of conductive layers in the through-hole. Therefore, the paste does not require through-hole plating. The conductive paste comprises (A) 100 parts by weight of a resin component that contains an acrylate resin and an epoxy resin, (B) from 200 to 1800 parts by weight of a metal powder of at least two metals that contain at least one low-melting-point metal having a melting point of not higher than 180° C. and at least one high-melting-point metal having a melting point of not lower than 800° C., (C) from 0.5 to 40 parts by weight of a curing agent that contains from 0.3 to 35 parts by weight of a phenol-type curing agent, and (D) from 0.3 to 80 parts by weight of a flux.Type: GrantFiled: May 27, 2003Date of Patent: May 8, 2007Assignee: Tatsuta Electric Wire & Cable Co., Ltd.Inventors: Hiroaki Umeda, Hisatoshi Murakami, Kiyoshi Iwai
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Patent number: 6943806Abstract: In a portable information terminal apparatus, the contents of data to be processed for display are checked, and a number of colors to be displayed is decided in accordance with the contents of the data. For example, to display only character data, a display processing for a monochrome display is performed by driving the light emitting circuit of a monochrome. For displaying image data, a display processing for a multi-color display is performed by driving the light emitting circuit of a multi-color.Type: GrantFiled: August 1, 2001Date of Patent: September 13, 2005Assignee: Pioneer CorporationInventor: Kiyoshi Iwai
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Publication number: 20020024480Abstract: In a portable information terminal apparatus, the contents of data to be processed for display are checked, and a number of colors to be displayed is decided in accordance with the contents of the data. For example, to display only character data, a display processing for a monochrome display is performed by driving the light emitting circuit of a monochrome. For displaying image data, a display processing for a multi-color display is performed by driving the light emitting circuit of a multi-color.Type: ApplicationFiled: August 1, 2001Publication date: February 28, 2002Applicant: PIONEER CORPORATIONInventor: Kiyoshi Iwai