Patents by Inventor Toyofumi Inoue
Toyofumi Inoue 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: 9058001Abstract: An image forming apparatus includes a toner image forming unit that forms and continuously transfers a toner image based on image data onto a transported sheet from the front to the rear in a sheet transport direction as the sheet is transported, a fixing unit positioned downstream of the toner image forming unit in the transport direction and that fixes the transferred toner image onto the sheet, an image determining unit that determines whether the formed toner image is a scattering toner image that causes toner scattering during the transfer, and a speed controlling unit that controls, when it is determined that the toner image is a scattering toner image, a transport speed of the sheet and a transfer speed of the toner image to the sheet such that the speeds are slower than those when it is determined that the toner image is not a scattering toner image.Type: GrantFiled: July 5, 2013Date of Patent: June 16, 2015Assignee: FUJI XEROX CO., LTD.Inventors: Narumasa Sato, Eiji Nakai, Katsuyuki Kitajima, Makoto Kamisaki, Toyofumi Inoue, Takafumi Koide, Masataka Kuribayashi, Yoshinari Ueno, Yoshifumi Eri
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Publication number: 20140112677Abstract: An image forming apparatus includes a toner image forming unit that forms and continuously transfers a toner image based on image data onto a transported sheet from the front to the rear in a sheet transport direction as the sheet is transported, a fixing unit positioned downstream of the toner image forming unit in the transport direction and that fixes the transferred toner image onto the sheet, an image determining unit that determines whether the formed toner image is a scattering toner image that causes toner scattering during the transfer, and a speed controlling unit that controls, when it is determined that the toner image is a scattering toner image, a transport speed of the sheet and a transfer speed of the toner image to the sheet such that the speeds are slower than those when it is determined that the toner image is not a scattering toner image.Type: ApplicationFiled: July 5, 2013Publication date: April 24, 2014Inventors: Narumasa SATO, Eiji Nakai, Katsuyuki Kitajima, Makoto Kamisaki, Toyofumi Inoue, Takafumi Koide, Masataka Kuribayashi, Yoshinari Ueno, Yoshifumi Eri
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Patent number: 8090283Abstract: An image forming apparatus includes: an image bearing body on which surface an image is formed and borne; an image forming section that forms the image; a transfer device that transfers the formed image to a transferring body; a cleaning member that comes into contact with the surface of the image bearing body to scrape an adhesion substance after the image is transferred; a storage tank in which the removed adhesion substance is stored; a damming member that obstructs a region between the cleaning member and the storage tank to temporarily dam the adhesion substance moving from the cleaning member to the storage tank on the cleaning member side, the damming member including overlapped members having openings, the members including a movable member that is slidable with respect to other member; and a driving section that drives the movable member to change an overlapping amount between the openings.Type: GrantFiled: July 13, 2009Date of Patent: January 3, 2012Assignee: Fuji Xerox Co., Ltd.Inventors: Masataka Kuribayashi, Toyofumi Inoue, Yoshinari Ueno, Takafumi Koide, Naoki Ohnishi
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Patent number: 7977022Abstract: The invention provides a developer having at least a toner, an aeration ratio (AR) of the developer measured by a powder rheometer being in a range of about 5.0 to about 10.0. It is preferable that the developer further contains an external additive of silica particles having a small diameter. The invention further provides a process cartridge having at least: a photoreceptor; and a developing device that comprises plura developer storage portions and that makes visible a latent image formed on the photoreceptor by using the developer. The invention further provides an image forming apparatus having at least the process cartridge.Type: GrantFiled: May 25, 2007Date of Patent: July 12, 2011Assignee: Fuji Xerox Co., Ltd.Inventors: Tomohiro Takeda, Toyofumi Inoue, Daisuke Ishizuka
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Patent number: 7867683Abstract: A toner that when the complex elastic modulus measured at an angular frequency of 6.28 rad/sec., and a strain amount of 0.3% is 1×106 Pa or more and 1×108 Pa or less, the tangent loss is 0.5 or more and 1.8 or less.Type: GrantFiled: April 20, 2007Date of Patent: January 11, 2011Assignee: Fuji Xerox Co., Ltd.Inventors: Masanobu Ninomiya, Toyofumi Inoue, Masataka Kuribayashi, Masashi Ikeda, Takafumi Koide
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Patent number: 7820349Abstract: The invention provides a toner for electrostatic latent image development comprising a first component and a second component which are isolated from each other and capable of forming a color when the first component and the second component are brought into reaction with each other, and a photo-curable composition containing either the first component or the second component, the photo-curable composition not being capable of forming a color when the photo-curable composition is not cured, that is irreversibly controlled to a state of being capable of forming a color by irradiating light having a specific wavelength at which the photo-curable composition is cured.Type: GrantFiled: August 16, 2006Date of Patent: October 26, 2010Assignee: Fuji Xerox Co., Ltd.Inventors: Seiichi Takagi, Takashi Imai, Susumu Yoshino, Katsumi Daimon, Emi Takahashi, Toyofumi Inoue, Yasushige Nakamura, Isao Ito
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Publication number: 20100232823Abstract: An image forming apparatus includes: an image bearing body on which surface an image is formed and borne; an image forming section that forms the image; a transfer device that transfers the formed image to a transferring body; a cleaning member that comes into contact with the surface of the image bearing body to scrape an adhesion substance after the image is transferred; a storage tank in which the removed adhesion substance is stored; a damming member that obstructs a region between the cleaning member and the storage tank to temporarily dam the adhesion substance moving from the cleaning member to the storage tank on the cleaning member side, the damming member including overlapped members having openings, the members including a movable member that is slidable with respect to other member; and a driving section that drives the movable member to change an overlapping amount between the openings.Type: ApplicationFiled: July 13, 2009Publication date: September 16, 2010Applicant: FUJI XEROX CO., LTD.Inventors: Masataka KURIBAYASHI, Toyofumi INOUE, Yoshinari UENO, Takafumi KOIDE, Naoki OHNISHI
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Publication number: 20080090164Abstract: The invention provides a developer having at least a toner, an aeration ratio (AR) of the developer measured by a powder rheometer being in a range of about 5.0 to about 10.0. It is preferable that the developer further contains an external additive of silica particles having a small diameter. The invention further provides a process cartridge having at least: a photoreceptor; and a developing device that comprises plura developer storage portions and that makes visible a latent image formed on the photoreceptor by using the developer. The invention further provides an image forming apparatus having at least the process cartridge.Type: ApplicationFiled: May 25, 2007Publication date: April 17, 2008Applicant: FUJI XEROX CO., LTD.Inventors: Tomohiro Takeda, Toyofumi Inoue, Daisuke Ishizuka
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Publication number: 20080085460Abstract: A toner that when the complex elastic modulus measured at an angular frequency of 6.28 rad/sec., and a strain amount of 0.3% is 1×106 Pa or more and 1×108 Pa or less, the tangent loss is 0.5 or more and 1.8 or less.Type: ApplicationFiled: April 20, 2007Publication date: April 10, 2008Applicant: FUJI XEROX CO., LTD.Inventors: Masanobu Ninomiya, Toyofumi Inoue, Masataka Kuribayashi, Masashi Ikeda, Takafumi Koide
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Publication number: 20070207402Abstract: The invention provides a toner for electrostatic latent image development comprising a first component and a second component which are isolated from each other and capable of forming a color when the first component and the second component are brought into reaction with each other, and a photo-curable composition containing either the first component or the second component, the photo-curable composition not being capable of forming a color when the photo-curable composition is not cured, that is irreversibly controlled to a state of being capable of forming a color by irradiating light having a specific wavelength at which the photo-curable composition is cured.Type: ApplicationFiled: August 16, 2006Publication date: September 6, 2007Applicant: FUJI XEROX CO., LTD.Inventors: Seiichi Takagi, Takashi Imai, Susumu Yoshino, Katsumi Daimon, Emi Takahashi, Toyofumi Inoue, Yasushige Nakamura, Isao Ito
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Publication number: 20070065742Abstract: The present invention discloses a single-component magnetic developer having a total energy amount, measured with a powder rheometer at a rotor tip end speed of 100 mm/sec at a rotor helix angle of ?5° at a ventilation rate of 20 ml/min, of 10 to 100 mJ; and a developing method, including agitating a developer in a developer container with an agitating member, forming a developer layer on a developer-carrying member, and applying an electric field to a development zone so as to develop a latent image on an electrostatic latent image-holding member with the developer layer, wherein the ratio Va/Vs of the rotational frequency Va of the agitating member to that Vs of the developer-carrying member is 0.Type: ApplicationFiled: January 23, 2006Publication date: March 22, 2007Applicant: FUJI XEROX CO., LTD.Inventors: Daisuke Ishizuka, Tomohiro Takeda, Toyofumi Inoue
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Patent number: 6933092Abstract: A magenta toner for electrophotography includes a binder resin and a colorant, wherein the toner contains at least a naphthol pigment having a structure represented by the following general formula (1) as the colorant, and has a shape factor SF1 of 110 to 140 obtained by the equation below and a volume average particle size of 2 to 9 ?m: wherein R represents the following group, and R? represents a hydrogen atom, an alkyl group or a methoxy group; SF1=R2/A×?/4×100 wherein R represents the maximum length of the toner and A represents the projected area of the toner.Type: GrantFiled: August 16, 2002Date of Patent: August 23, 2005Assignee: Fuji Xerox Co., Ltd.Inventors: Satoshi Yoshida, Yasuo Matsumura, Toyofumi Inoue, Hidekazu Yaguchi, Takahisa Fujii
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Publication number: 20030194628Abstract: A magenta toner for electrophotography includes a binder resin and a colorant, wherein the toner contains at least a naphthol pigment having a structure represented by the following general formula (1) as the colorant, and has a shape factor SF1 of 110 to 140 obtained by the equation below and a volume average particle size of 2 to 9 &mgr;m: 1Type: ApplicationFiled: August 16, 2002Publication date: October 16, 2003Applicant: FUJI XEROX CO., LTD.Inventors: Satoshi Yoshida, Yasuo Matsumura, Toyofumi Inoue, Hidekazu Yaguchi, Takahisa Fujii, Tomohito Nakajima
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Patent number: 6453138Abstract: An electrophotographic image forming method includes a charging step, an exposure step, a developing step and a transfer step in the rotation of an electrostatic latent image bearing member, in which a process speed of the electrostatic latent image bearing member is 200 to 500 mm/sec, an outer diameter of the electrostatic latent image bearing member is 15 to 35 mm, an outer diameter of a developer bearing member is 10 to 25 mm, and a magnetic single component developer of which the residual magnetization in a measured magnetic field of 796 kA/m is 0.5 to 5.0 Am2/kg is used as the developer. The electrophotographic image forming method can provide a good image quality without causing scattering of toner in downsizing, weight reduction of an electrophotographic apparatus and speed-up of an electrophotographic process.Type: GrantFiled: August 30, 2001Date of Patent: September 17, 2002Assignee: Fuji Xerox Co., Ltd.Inventors: Toyofumi Inoue, Masahiro Uchida, Etsuo Tominaga, Michio Take, Tomohiro Takeda, Shinpei Takagi, Satoshi Yoshida, Takahisa Fujii
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Publication number: 20020031377Abstract: An electrophotographic image forming method includes a charging step, an exposure step, a developing step and a transfer step in the rotation of an electrostatic latent image bearing member, in which a process speed of the electrostatic latent image bearing member is 200 to 500 mm/sec, an outer diameter of the electrostatic latent image bearing member is 15 to 35 mm, an outer diameter of a developer bearing member is 10 to 25 mm, and a magnetic single component developer of which the residual magnetization in a measured magnetic field of 796 kA/m is 0.5 to 5.0 Am2/kg is used as the developer. The electrophotographic image forming method can provide a good image quality without causing scattering of toner in downsizing, weight reduction of an electrophotographic apparatus and speed-up of an electrophotographic process.Type: ApplicationFiled: August 30, 2001Publication date: March 14, 2002Applicant: FUJI XEROX CO., LTD.Inventors: Toyofumi Inoue, Masahiro Uchida, Etsuo Tominaga, Michio Take, Tomohiro Takeda, Shinpei Takagi, Satoshi Yoshida, Takahisa Fujii
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Patent number: 6258911Abstract: A polymer having groups located at the ends of the polymer chain which groups are derived from stable free radical compounds, wherein the polymer is of the formula: SFR—(R)—SFR wherein SFR represents a covalently bonded stable free radical group and R represents a thermoplastic resin.Type: GrantFiled: August 18, 1994Date of Patent: July 10, 2001Assignee: Xerox CorporationInventors: Michael K. Georges, Toyofumi Inoue, Gordon K. Hamer, Peter M. Kazmaier, Richard P. N. Veregin
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Patent number: 6114499Abstract: A process for the preparation of branched thermoplastic resins comprising: heating a mixture of an unsaturated resin, a free radical initiator, and a stable free radical agent; adding to the heated mixture at least on polymerizable monomer; and cooling the mixture, wherein the resulting product is a branched thermoplastic resin with arms or branches comprised of polymerized monomer with substantially uniform length and narrow polydispersity.Type: GrantFiled: April 21, 1999Date of Patent: September 5, 2000Assignee: Xerox CorporationInventors: Peter M. Kazmaier, Karen A. Moffat, Marko D. Saban, Richard P. N. Veregin, Michael K. Georges, Gordon K. Hamer, Toyofumi Inoue, Stephan V. Drappel
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Patent number: 6087451Abstract: A polymer having groups located at the ends of the polymer chain which groups are derived from stable free radical compounds, wherein the polymer is of the formula:SFR-(R)-SFRwherein SFR represents a covalently bonded stable free radical group and R represents a thermoplastic resin.Type: GrantFiled: May 1, 1998Date of Patent: July 11, 2000Assignee: Xerox CorporationInventors: Michael K. Georges, Toyofumi Inoue, Gordon K. Hamer, Peter M. Kazmaier, Richard P. N. Veregin
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Patent number: 5965312Abstract: A one-component developer comprising an external additive, and toner particles containing a binder resin and a colorant, wherein the external additive contains a titanium compound obtained by the reaction of TiO(OH).sub.2 and a silane compound, and an image forming method using the one-component developer are disclosed. The one-component developer and the image forming method provide excellent flow and a narrow charge distribution, can reduce fluctuation of the charge property due to the environmental change, and can thus form a high-quality image without fogging and the damage to a latent image retainer by filming can be prevented.Type: GrantFiled: May 15, 1997Date of Patent: October 12, 1999Assignee: Fuji Xerox Co., Ltd.Inventors: Hiroshi Nakazawa, Koutarou Yoshihara, Etsuo Tominaga, Hiroe Okuyama, Masahiro Uchida, Chiaki Suzuki, Yoshifumi Iida, Toyofumi Inoue, Hiroyoshi Okuno
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Patent number: 5891600Abstract: The present invention provides a mono-component developer comprising toner particles containing a binding resin, a colorant and an additive and a method of forming images by use thereof. In the present invention said additive is preferably a titanium compound prepared by through the reaction between TiO(OH).sub.2 and a silane compound or through the reaction between TiO(OH).sub.2 and a silicone oil. The specific gravity of the said titanium compound is in the range of 2.8 to 3.6. The average particle diameter thereof is in the range of 10 to 70 nm. The said toner particle is preferably a non-magnetic particle. By making use of the mono-component developer and the method for forming an image using it, charging of the toner, and carriage of the toner can be stabilized over a long period of time, and stable image formation can be obtained.Type: GrantFiled: October 9, 1997Date of Patent: April 6, 1999Assignee: Fuji Xerox Co., Ltd.Inventors: Hiroyoshi Okuno, Etsuo Tominaga, Toyofumi Inoue, Tetsu Torigoe, Hiroe Okuyama, Takahisa Fujii, Koutarou Yoshihara, Masahiro Uchida, Hiroshi Nakazawa, Chiaki Suzuki, Yoshifumi Iida