Patents by Inventor Satoya Sugiura
Satoya Sugiura 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: 8802337Abstract: An electrophotographic photoreceptor includes a support; an undercoat layer which is provided on the support and contains at least a binder resin, metal oxide particles, and an electron-accepting compound having an anthraquinone structure, in which a content of the electron-accepting compound is from 0.5% by weight to 1.5% by weight with respect to the metal oxide particles and a contact angle of the metal oxide particles with respect to water is from 7° to 12°; and a photosensitive layer which is provided on the undercoat layer.Type: GrantFiled: November 8, 2012Date of Patent: August 12, 2014Assignee: Fuji Xerox Co., Ltd.Inventors: Akihiro Kawasaki, Shigeto Hashiba, Hirofumi Nakamura, Hidemi Nukada, Satoya Sugiura
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Publication number: 20140219680Abstract: An image forming apparatus includes a charging roller including elastic and surface layers and a photoconductor drum. Initially, the surface layer has a surface roughness Rz of 3-6 ?m, and the layers have an impedance ratio of 0.81 or less in absolute value at a frequency of 800-3000 Hz. After a predetermined time, the surface roughness Rz is reduced by a decrement ?Rz of 0.1-4 ?m. The drum has a film thickness D initially ranging from 20-40 ?m and reduced by a decrement ?D of 5-25 ?m after the predetermined time. Herein, 0.005??Rz/?D?0.8 holds. The impedance ratio is represented as ZE/(ZE+ZS) wherein ZE and ZS represent the respective impedances of the elastic layer and the surface layer, and 100 k A4-size recording media recorded with images with an area coverage of 7% are printed in the predetermined time.Type: ApplicationFiled: September 30, 2013Publication date: August 7, 2014Applicant: FUJI XEROX CO., LTD.Inventors: Takuro HAGIWARA, Yoshiki SHIMODAIRA, Yuko KAWASE, Satoru TSUTO, Minoru ROKUTAN, Satoya SUGIURA
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Publication number: 20130316275Abstract: An electrophotographic photoreceptor includes a support; an undercoat layer which is provided on the support and contains at least a binder resin, metal oxide particles, and an electron-accepting compound having an anthraquinone structure, in which a content of the electron-accepting compound is from 0.5% by weight to 1.5% by weight with respect to the metal oxide particles and a contact angle of the metal oxide particles with respect to water is from 7° to 12°; and a photosensitive layer which is provided on the undercoat layer.Type: ApplicationFiled: November 8, 2012Publication date: November 28, 2013Applicant: FUJI XEROX CO., LTD.Inventors: Akihiro KAWASAKI, Shigeto HASHIBA, Hirofumi NAKAMURA, Hidemi NUKADA, Satoya SUGIURA
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Patent number: 8574797Abstract: An electrophotographic photoconductor includes a base, an undercoat layer that contains a metal oxide and an electron-accepting material and has a thickness of about 3 ?m or more and about 15 ?m or less, and a photosensitive layer containing a polymer having a repeating unit represented by general formula (1) where R1 and R2 each independently represent a halogen atom, an alkyl group having 1 to 6 carbon atoms, a cycloalkyl group having 5 to 7 carbon atoms, or an aryl group having 6 to 12 carbon atoms; and m and n each independently represent an integer of 0 to 4.Type: GrantFiled: August 18, 2010Date of Patent: November 5, 2013Assignee: Fuji Xerox Co., Ltd.Inventors: Shigeto Hashiba, Kazuhiro Koseki, Satoya Sugiura, Kenta Ide, Fuyuki Kano
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Publication number: 20130252147Abstract: An electrophotographic photoreceptor includes a conductive support, and an undercoat layer, a charge generation layer, and a charge transport layer that are provided in this order on the conductive support, wherein the undercoat layer includes at least metallic oxide particles, a reactive acceptor substance including an anthraquinone structure expressed by the following Formula 1, and a binder resin, the charge generation layer includes hydroxygallium phthalocyanine as a charge generation material, and a reflectance of incident light having a wavelength of 780 nm on a surface of the charge generation layer when the charge transport layer is removed is 17% or greater: wherein the anthraquinone structure expressed by Formula 1 is bonded to another structure at a position of *, and thus forms the reactive acceptor substance, and in Formula 1, n1 represents an integer of 1 to 7.Type: ApplicationFiled: July 30, 2012Publication date: September 26, 2013Applicant: FUJI XEROX CO., LTD.Inventors: Satoya SUGIURA, Shigeto HASHIBA, Kazuhiro KOSEKI, Hirofumi NAKAMURA, Kenta IDE, Akihiro NONAKA, Kosuke NARITA, Akihiro KAWASAKI
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Publication number: 20130236821Abstract: An electrophotographic photoreceptor includes a conductive support, an undercoat layer that is provided on the conductive support and that has a thickness of from 15 ?m to 40 ?m and has light transmittance of 20% or less with respect to light having a wavelength of 450 nm when the thickness is at least 15 ?m, a charge generation layer that is provided on the undercoat layer, and a charge transport layer that is provided on the charge generation layer and that has a thickness of from 15 ?m to 40 ?m and has light transmittance of 30% or less with respect to light having a wavelength of 450 nm when the thickness is at least 15 ?m.Type: ApplicationFiled: August 13, 2012Publication date: September 12, 2013Applicant: FUJI XEROX CO., LTD.Inventors: Kenta IDE, Kosuke NARITA, Akihiro KAWASAKI, Satoya SUGIURA, Akihiro NONAKA, Hirofumi NAKAMURA, Kazuhiro KOSEKI, Shigeto HASHIBA
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Patent number: 8492059Abstract: An electrophotographic photoreceptor, includes: a conductive support; and a photosensitive layer provided on or above the conductive support, the photosensitive layer including an outermost surface layer at the farthest location from the conductive support, wherein the outermost surface layer contains: coated insulating inorganic particles obtained by subjecting insulating inorganic particles having a specific surface area of not more than about 300 m2/g to a coating treatment with an aromatic functional group-containing compound; and fluorine-containing organic particles.Type: GrantFiled: October 20, 2009Date of Patent: July 23, 2013Assignee: Fuji Xerox Co., Ltd.Inventors: Shigeto Hashiba, Kazuhiro Koseki, Kaori Iemura, Kenta Ide, Satoya Sugiura, Fuyuki Kano, Kazuyuki Nakamura
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Publication number: 20120094223Abstract: An image forming apparatus includes an electrophotographic photoconductor that includes an outermost surface layer containing a binder resin having a structural unit represented by general formula (A) below and a charge transporting material having a butadiene trimer structure in a single molecule, a charging unit that charges the electrophotographic photoconductor, an electrostatic latent image forming unit that forms an electrostatic latent image, a toner image forming unit that forms a toner image, and a transfer unit that transfers the toner image formed on the electrophotographic photoconductor onto a transfer-receiving body, where R11 and R12 each independently represent a halogen atom, an alkyl group having 1 to 6 carbon atoms, a cycloalkyl group having 5 to 7 carbon atoms, or an aryl group having 6 to 12 carbon atoms; and a and b each independently represent an integer of 0 to 4.Type: ApplicationFiled: May 23, 2011Publication date: April 19, 2012Applicant: FUJI XEROX CO., LTD.Inventors: Fuyuki KANO, Shigeto HASHIBA, Kazuhiro KOSEKI, Shinya YAMAMOTO, Satoya SUGIURA, Kenta IDE, Kosuke NARITA
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Patent number: 8095060Abstract: A cleaning device includes a cleaning blade that contacts an image carrier and cleans residual toner remaining on the image carrier; a toner pool forming member that is disposed on an upstream side of the cleaning blade in a rotational direction of the image carrier, collects the residual toner that has been cleaned, and forms a toner pool that contacts the cleaning blade and the image carrier; and a toner amount adjusting component that makes the pressure of the residual toner that acts on the image carrier substantially uniform across an axis-of-rotation direction of the image carrier by adjusting the amount of the residual toner in the toner pool in the axis-of-rotation direction of the image carrier.Type: GrantFiled: July 16, 2008Date of Patent: January 10, 2012Assignee: Fuji Xerox Co., Ltd.Inventors: Yutaka Kiuchi, Satoshi Shigezaki, Satoya Sugiura, Ayumi Noguchi, Takayuki Yamashita, Mitsuo Yamamoto, Masaya Nakatsuhara, Yuki Nagamori, Mikio Yamaguchi
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Patent number: 8081895Abstract: An image forming apparatus includes: a plurality of image carrying members; a plurality of rotation cleaning members disposed for the respective image carrying members and cleaning surfaces of the respective image carrying members through rotation; and a controller that rotates the plurality of rotation cleaning members at different rotation speeds in accordance with wear amounts of the respective image carrying members.Type: GrantFiled: July 6, 2007Date of Patent: December 20, 2011Assignee: Fuji Xerox Co., Ltd.Inventors: Satoshi Shigezaki, Satoya Sugiura
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Publication number: 20110217640Abstract: An electrophotographic photoconductor includes a base, an undercoat layer that contains a metal oxide and an electron-accepting material and has a thickness of about 3 ?m or more and about 15 ?m or less, and a photosensitive layer containing a polymer having a repeating unit represented by general formula (1) where R1 and R2 each independently represent a halogen atom, an alkyl group having 1 to 6 carbon atoms, a cycloalkyl group having 5 to 7 carbon atoms, or an aryl group having 6 to 12 carbon atoms; and m and n each independently represent an integer of 0 to 4.Type: ApplicationFiled: August 18, 2010Publication date: September 8, 2011Applicant: FUJI XEROX CO., LTD.Inventors: Shigeto Hashiba, Kazuhiro Koseki, Satoya Sugiura, Kenta Ide, Fuyuki Kano
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Publication number: 20100196810Abstract: An electrophotographic photoreceptor, includes: a conductive support; and a photosensitive layer provided on or above the conductive support, the photosensitive layer including an outermost surface layer at the farthest location from the conductive support, wherein the outermost surface layer contains: coated insulating inorganic particles obtained by subjecting insulating inorganic particles having a specific surface area of not more than about 300 m2/g to a coating treatment with an aromatic functional group-containing compound; and fluorine-containing organic particles.Type: ApplicationFiled: October 20, 2009Publication date: August 5, 2010Applicant: FUJI XEROX CO., LTD.Inventors: Shigeto HASHIBA, Kazuhiro KOSEKI, Kaori IEMURA, Kenta IDE, Satoya SUGIURA, Fuyuki KANO, Kazuyuki NAKAMURA
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Publication number: 20090097893Abstract: A cleaning device includes a cleaning blade that contacts an image carrier and cleans residual toner remaining on the image carrier; a toner pool forming member that is disposed on an upstream side of the cleaning blade in a rotational direction of the image carrier, collects the residual toner that has been cleaned, and forms a toner pool that contacts the cleaning blade and the image carrier; and a toner amount adjusting component that makes the pressure of the residual toner that acts on the image carrier substantially uniform across an axis-of-rotation direction of the image carrier by adjusting the amount of the residual toner in the toner pool in the axis-of-rotation direction of the image carrier.Type: ApplicationFiled: July 16, 2008Publication date: April 16, 2009Inventors: Yutaka Kiuchi, Satoshi Shigezaki, Satoya Sugiura, Ayumi Noguchi, Takayuki Yamashita, Mitsuo Yamamoto, Masaya Nakatsuhara, Yuki Nagamori, Mikio Yamaguchi
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Patent number: 7471924Abstract: This invention relates to a cleaning unit including a cleaning blade that keeps a front end of rubber material in contact with the surface with a pressure so as to scrape residual toner left on the surface of the photoreceptor and a fiber body having multiple fibers in contact with the surface of the photoreceptor in the upstream in the cyclic moving direction of the surface of the photoreceptor with respect to the cleaning blade, the cleaning blade satisfying A??2.5×B+102 and 6.3?B?19.6, where A designates a contact angle (°) with pure water under 23° C., 55% RH and B designates 100% modulus (MPa) at 23° C.Type: GrantFiled: February 10, 2006Date of Patent: December 30, 2008Assignee: Fuji Xerox Co., Ltd.Inventors: Satoshi Shigezaki, Hiroe Okuyama, Makoto Sakanobe, Kanji Shintaku, Satoya Sugiura, Tatsuya Soga, Jin Iwasaki, Yoshitaka Kuroda
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Publication number: 20080159765Abstract: An image forming apparatus includes: a plurality of image carrying members; a plurality of rotation cleaning members disposed for the respective image carrying members and cleaning surfaces of the respective image carrying members through rotation; and a controller that rotates the plurality of rotation cleaning members at different rotation speeds in accordance with wear amounts of the respective image carrying members.Type: ApplicationFiled: July 6, 2007Publication date: July 3, 2008Inventors: Satoshi Shigezaki, Satoya Sugiura
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Publication number: 20070020005Abstract: This invention relates to a cleaning unit comprising: a cleaning blade that keeps a front end of rubber material in contact with the surface with a pressure so as to scrape residual toner left on the surface of the photoreceptor and a fiber body having multiple fibers in contact with the surface of the photoreceptor in the upstream in the cyclic moving direction of the surface of the photoreceptor with respect to the cleaning blade, wherein the cleaning blade satisfies conditions A??2.5×B+102 and 6.3?B?19.6, where A designates a contact angle (°) with pure water under 23° C., 55% RH and B designates 100% modulus (MPa) at 23° C.Type: ApplicationFiled: February 10, 2006Publication date: January 25, 2007Applicant: FUJI XEROX CO., LTD.Inventors: Satoshi Shigezaki, Hiroe Okuyama, Makoto Sakanobe, Kanji Shintaku, Satoya Sugiura, Tatsuya Soga, Jin Iwasaki, Yoshitaka Kuroda