Patents by Inventor Kazuhisa Sudo
Kazuhisa Sudo 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: 8483598Abstract: The image forming apparatus includes a latent image bearing member; a charging device charging the surface of the latent image bearing member; a latent image forming device forming an electrostatic latent image on the surface of the latent image bearing member; a developing device supplying toner to the electrostatic latent image to form a toner image; a cover film supplying device supplying a cover film to the surface of the latent image bearing member at a cover film supplying position located on an upstream side from the development position so that the toner image is formed on the cover film covering the surface of the latent image bearing member; and a cover film separating device separating the cover film bearing the toner image thereon from the surface of the image bearing member before the cover film bearing the toner image thereon reaches the cover film supplying position.Type: GrantFiled: April 12, 2010Date of Patent: July 9, 2013Assignee: Ricoh Company, LimitedInventors: Shigekazu Enoki, Takuya Suganuma, Ryuji Yoshida, Yoshinori Nakagawa, Atsushi Kurokawa, Ichiro Kadota, Naoyuki Ozaki, Hiroki Atari, Hiroyuki Sugiyama, Kazuhisa Sudo, Masanori Kawasumi, Hiroshi Nakai, Shin Kayahara, Shuji Tanaka
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Patent number: 8422897Abstract: By using a black-image forming device, an abrasive pattern is formed on a sheet conveying belt so that toner is input to a contact section where a cleaning blade is in contact with the sheet conveying belt. After the toner is input to the contact section where the cleaning blade is in contact with the sheet conveying belt and then the sheet conveying belt makes one or more revolutions, a process control is performed in which Y, M, and C toner patterns and B toner pattern are transferred onto the sheet conveying belt.Type: GrantFiled: August 27, 2010Date of Patent: April 16, 2013Assignee: Ricoh Company, LimitedInventors: Hirokatsu Suzuki, Kazuhisa Sudo, Masanori Kawasumi, Shunichi Hashimoto, Mugijirou Uno, Akira Shinshi, Masaharu Furuya, Masahiko Satoh, Hirohmi Tamura, Kazuya Saitoh, Tomoko Takahashi, Takuya Suganuma
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Patent number: 8385793Abstract: An image forming apparatus includes a first image carrier, a second image carrier, an intermediate transfer member disposed facing the second image carrier, a conveyance belt to transport a transfer sheet, disposed facing both the first image carrier and the intermediate transfer member, a first transfer member to transfer a first toner image formed on the first image carrier onto the transfer sheet, a second transfer member to transfer a second toner image formed on the second image carrier onto the intermediate transfer member, and a third transfer member disposed downstream from the second image carrier in a rotation direction of the intermediate transfer member, to transfer the second toner image from the intermediate transfer member onto the transfer sheet transported by the conveyance belt. The first image carrier and the intermediate transfer member inflect the conveyance belt at a first inflection angle and a second inflection angle, respectively.Type: GrantFiled: July 1, 2010Date of Patent: February 26, 2013Assignee: Ricoh Company, LimitedInventors: Masaharu Furuya, Masahiko Satoh, Masanori Kawasumi, Hirokatsu Suzuki, Hirohmi Tamura, Kazuya Saitoh, Takuya Suganuma, Mugijirou Uno, Shunichi Hashimoto, Akira Shinshi, Kazuhisa Sudo, Tomoko Takahashi
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Patent number: 8315545Abstract: An image forming apparatus includes first and second belt members, at least one color image carrier, a separate image carrier, a primary transfer member, a secondary transfer mechanism, a direct transfer member, a first image detector to detect positional deviation of transferred images from reference pattern images, and a controller to transfer the reference pattern images formed on the at least one color image carrier and the separate image carrier onto the first belt member or onto the second belt member, convey the reference pattern images to the first image detector, cause the first image detector to detect the reference pattern images, and adjust one or more image forming conditions of the image forming apparatus to prevent positional deviation of the transferred images from the reference pattern images based on detection results obtained by the first image detector.Type: GrantFiled: September 11, 2009Date of Patent: November 20, 2012Assignee: Ricoh Company, Ltd.Inventors: Kazuhisa Sudo, Mitsuru Takahashi, Kazuosa Kuma, Tsutomu Katoh, Takeshi Fukao, Shinichi Kawahara
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Patent number: 8249468Abstract: An image forming apparatus includes at least one image carrier and a recording medium conveyor forming a transfer nip therebetween, a conveyance member disposed closest to the transfer nip on an upstream side of the transfer nip to convey the recording medium to the transfer nip, and a conveyance control mechanism to deactivate the conveyance member to stop providing a conveyance force to the recording medium after the leading edge of the recording medium has entered the transfer nip and before the trailing edge of the recording medium passes a point of force application and remaining in the inactive state until the recording medium passes the point of force application. The conveyance force remains unapplied to the recording medium from when the conveyance control mechanism deactivates the conveyance member to when the trailing edge of the recording medium passes the transfer nip.Type: GrantFiled: May 1, 2009Date of Patent: August 21, 2012Assignee: Ricoh Company, Ltd.Inventors: Kazuosa Kuma, Shinichi Kawahara, Mitsuru Takahashi, Tsutomu Katoh, Takeshi Fukao, Kazuhisa Sudo
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Patent number: 8199381Abstract: A pasting apparatus includes a pasting member operative to paste a non-transparent medium onto an image-formed surface of a transparent medium; and a conveying member that conveys the non-transparent medium to the pasting member by electrostatic adsorption.Type: GrantFiled: March 14, 2008Date of Patent: June 12, 2012Assignee: Ricoh Company, LimitedInventors: Kazuhisa Sudo, Mikio Ishibashi, Reki Nakamura, Megumi Ohtoshi, Yukiko Iwasaki, Kazuhiko Yuki, Nobuyuki Koinuma, Takashi Sakamaki, Ryuji Yoshida
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Patent number: 8180246Abstract: An image forming apparatus includes multiple image forming units disposed adjacent to and horizontally aligned with each other to form respective single non-black color images, a first transfer member to sequentially transfer and overlay the respective single non-black color images thereon for forming a composite color image, a black image forming unit disposed separately from the multiple image forming units including a black image carrier and a black image developing unit, a second transfer member to transfer the black image from the black image forming unit onto a recording medium, a first cleaning unit to clean the surface of the black image carrier, and a second cleaning unit to clean the surface of the second transfer member. The black toner removed from the surface of the black image carrier is collected to the black image developing unit.Type: GrantFiled: August 17, 2009Date of Patent: May 15, 2012Assignee: Ricoh Company, Ltd.Inventors: Shinichi Kawahara, Masumi Sato, Nobuyuki Koinuma, Kazuhisa Sudo, Tokuya Ojimi, Kazuhiko Yuki, Kohsuke Yamamoto, Takehide Mizutani, Masaki Sukesako, Ryuji Yoshida
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Patent number: 8068770Abstract: An insertion passage 104Y for inserting a suction nozzle 73Y fixed to an image forming apparatus is provided on a holder 102Y, and a connecting passage 114Y that connects the insertion passage 104Y and a toner storage section 106Y of the holder 102Y is provided. After the toner sent from bottle 101Y to the holder 102Y falls towards the connecting passage 104Y, the toner flows into the suction nozzle 73Y through the connecting passage 114Y and is then discharged out of the holder 102Y. An airtightness between the insertion passage 114Y and the suction nozzle 73Y inserted into the insertion passage 114 Y is superior than an airtightness between the bottle 101Y and the holder 102Y engaged with the bottle 101Y.Type: GrantFiled: August 2, 2010Date of Patent: November 29, 2011Assignee: Ricoh Company, Ltd.Inventors: Takeroh Kurenuma, Fumio Ogata, Seiji Terazawa, Masayuki Yamane, Kenzo Tatsumi, Kiyonori Tsuda, Emi Kita, Nobuyuki Taguchi, Satoshi Narumi, Kazuhisa Sudo
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Patent number: 8023877Abstract: An image forming apparatus capable of using a recording medium having a transparent portion includes an image forming unit, a fixing unit, and an applicator. The image forming unit forms an image on a face of the recording medium. The fixing unit fixes the image, formed by the image forming unit, on the face of the recording medium. The applicator applies a non-transparent liquid to at least the fixed image on the face of the recording medium.Type: GrantFiled: December 17, 2007Date of Patent: September 20, 2011Assignee: Ricoh Company LimitedInventors: Kazuhisa Sudo, Mikio Ishibashi, Yukiko Iwasaki, Megumi Ohtoshi, Reki Nakamura, Masafumi Yamada, Nobuyuki Koinuma, Takashi Sakamaki
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Patent number: 8010005Abstract: An image forming apparatus includes a transfer device, a voltage applicator, a current sensor, and a discharge detector. The transfer device transfers a toner image from one surface to another by developing an electrical field across a transfer gap when provided with a transfer bias. The voltage applicator applies a stepped test voltage to the transfer device. The current sensor senses a current flowing to the transfer device during application of the test voltage the discharge detector detects an electrical discharge occurring in the transfer gap based on a rate of increase of the sensed current.Type: GrantFiled: February 6, 2009Date of Patent: August 30, 2011Assignee: Ricoh Company LimitedInventors: Masaki Sukesako, Nobuyuki Koinuma, Kazuhisa Sudo, Kazuhiko Yuki, Hiroaki Takahashi, Takehide Mizutani, Ryuji Yoshida
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Patent number: 7997320Abstract: A sheet cutter cuts an adhesion sheet and includes a pair of blades including a first blade including a blade edge and a second blade opposing the first blade and including a blade edge. The pair of blades cuts a border of the adhesion sheet. The adhesion sheet is formed by adhering a first sheet, at least a part of which is transparent and bears a mirror image, to a non-transparent second sheet including an adhesive layer, to oppose the mirror image on the first sheet against the adhesive layer of the second sheet.Type: GrantFiled: June 11, 2008Date of Patent: August 16, 2011Assignee: Ricoh Company, Ltd.Inventors: Kohsuke Yamamoto, Kazuhisa Sudo, Reki Nakamura, Takehide Mizutani, Mikio Ishibashi, Yukiko Iwasaki, Nobuyuki Koinuma, Takashi Sakamaki, Kazuhiko Yuki, Ryuji Yoshida, Megumi Ohtoshi
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Patent number: 7962069Abstract: An insertion passage 104Y for inserting a suction nozzle 73Y fixed to an image forming apparatus is provided on a holder 102Y, and a connecting passage 114Y that connects the insertion passage 104Y and a toner storage section 106Y of the holder 102Y is provided After the toner sent from bottle 101Y to the holder 102Y falls towards the connecting passage 104Y, the toner flows into the suction nozzle 73Y through the connecting passage 114Y and is then discharged out of the holder 102Y An airtightness between the insertion passage 114Y and the suction nozzle 73Y inserted into the insertion passage 114 Y is superior than an airtightness between the bottle 101Y and the holder 102Y engaged with the bottle 101Y.Type: GrantFiled: August 5, 2005Date of Patent: June 14, 2011Assignee: Ricoh Company, Ltd.Inventors: Takeroh Kurenuma, Fumio Ogata, Seiji Terazawa, Masayuki Yamane, Kenzo Tatsumi, Kiyonori Tsuda, Emi Kita, Nobuyuki Taguchi, Satoshi Narumi, Kazuhisa Sudo
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Patent number: 7960084Abstract: An information recording medium includes a transparent recording member and a substantially non-transparent member. The transparent recording member has at least one transparent area and a concavo-convex pattern on a first surface thereof while bearing a reverse toner image on a second surface thereof. The substantially non-transparent member is formed on the second surface of the transparent recording member.Type: GrantFiled: October 26, 2007Date of Patent: June 14, 2011Assignee: Ricoh Company, Ltd.Inventors: Nobuyuki Koinuma, Mikio Ishibashi, Kazuhisa Sudo, Megumi Ohtoshi, Reki Nakamura, Masafumi Yamada, Yukiko Iwasaki, Takashi Sakamaki
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Patent number: 7909081Abstract: A sheet laminator includes a bonding unit and a restricting unit. The bonding unit bonds a first sheet to a second sheet that includes an adhesive layer. The restricting unit restricts movement of any one of the first sheet and the second sheet thereby preventing bonding between the first sheet and the second sheet before the first sheet and the second sheet reach the bonding unit.Type: GrantFiled: March 14, 2008Date of Patent: March 22, 2011Assignee: Ricoh Company, LimitedInventors: Kazuhisa Sudo, Mikio Ishibashi, Reki Nakamura, Megumi Ohtoshi, Yukiko Iwasaki, Kazuhiko Yuki, Nobuyuki Koinuma, Takashi Sakamaki, Ryuji Yoshida, Takehide Mizutani, Kohsuke Yamamoto
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Publication number: 20110058832Abstract: By using a black-image forming device, an abrasive pattern is formed on a sheet conveying belt so that toner is input to a contact section where a cleaning blade is in contact with the sheet conveying belt. After the toner is input to the contact section where the cleaning blade is in contact with the sheet conveying belt and then the sheet conveying belt makes one or more revolutions, a process control is performed in which Y, M, and C tone patterns and B tone pattern are transferred onto the sheet conveying belt.Type: ApplicationFiled: August 27, 2010Publication date: March 10, 2011Inventors: Hirokatsu SUZUKI, Kazuhisa Sudo, Masanori Kawasumi, Shunichi Hashimoto, Mugijirou Uno, Akira Shinshi, Masaharu Furuya, Masahiko Satoh, Hirohmi Tamura, Kazuya Saitoh, Tomoko Takahashi, Takuya Suganuma
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Patent number: 7883089Abstract: In an image forming apparatus including an image forming unit that forms an image on a recording medium conveyed from a sheet feeding unit to obtain an image with photographic quality, at least a part of the recording medium has a transparent portion. When an image obtained by reversing an original image is transferred onto the transparent part, sheet-delivery rollers are operable in a direction in which a pressure onto the recording medium is reduced immediately after fixing of the image.Type: GrantFiled: June 5, 2007Date of Patent: February 8, 2011Assignee: Ricoh Company, LimitedInventors: Kazuhisa Sudo, Mikio Ishibashi, Megumi Ohtoshi, Reki Nakamura, Masafumi Yamada, Toshihiro Sugiyama, Yukiko Iwasaki, Nobuyuki Koinuma, Takashi Sakamaki
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Publication number: 20110013950Abstract: An image forming apparatus includes a first image carrier, a second image carrier, an intermediate transfer member disposed facing the second image carrier, a conveyance belt to transport a transfer sheet, disposed facing both the first image carrier and the intermediate transfer member, a first transfer member to transfer a first toner image formed on the first image carrier onto the transfer sheet, a second transfer member to transfer a second toner image formed on the second image carrier onto the intermediate transfer member, and a third transfer member disposed downstream from the second image carrier in a rotation direction of the intermediate transfer member, to transfer the second toner image from the intermediate transfer member onto the transfer sheet transported by the conveyance belt. The first image carrier and the intermediate transfer member inflect the conveyance belt at a first inflection angle and a second inflection angle, respectively.Type: ApplicationFiled: July 1, 2010Publication date: January 20, 2011Inventors: Masaharu FURUYA, Masahiko Satoh, Masanori Kawasumi, Hirokatsu Suzuki, Hirohmi Tamura, Kazuya Saitoh, Takuya Suganuma, Mugijirou Uno, Shunichi Hashimoto, Akira Shinshi, Kazuhisa Sudo, Tomoko Takahashi
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Patent number: 7869746Abstract: In an image forming device including an image support object which supports an electrostatic latent image, and a developing device which turns the electrostatic latent image formed on the surface of the image support object, into a visible image with toner, a powder storing unit stores powder for image formation which is either a developing agent containing a toner and a carrier or a toner. A powder supplying unit supplies the powder stored in the powder storing unit, to the developing device. The powder storing unit includes a gas supplying unit which blows off a gas from an exhaust outlet of the gas supplying unit into the powder storing unit, and a powder passage which allows the powder storing unit to communicate with the developing device.Type: GrantFiled: March 7, 2007Date of Patent: January 11, 2011Assignee: Ricoh Company, Ltd.Inventors: Fumihito Itoh, Hirosato Amano, Kazuhisa Sudo
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Patent number: 7865121Abstract: An image forming apparatus that includes an image bearing member to bear a latent electrostatic image, a charging device to charge a surface of the image bearing member, an irradiating device to irradiate the surface of the image bearing member to form the latent electrostatic image thereon, a developing device to develop the latent electrostatic image, an optional cleaning unit to clean the surface of the image bearing member, a transfer device to transfer the developed image to an opaque medium, an optional cleaning device to clean a surface of the transfer device, a fixing device to fix the transferred image on the opaque medium, and an attachment device to attach the fixed image to a transparent medium after the opaque medium is overlaid with the transparent medium, and recording media for use in the image forming apparatus.Type: GrantFiled: July 9, 2007Date of Patent: January 4, 2011Assignee: Ricoh Company, Ltd.Inventors: Yukiko Iwasaki, Kazuhisa Sudo, Reki Nakamura, Mikio Ishibashi, Nobuyuki Koinuma, Toshihiro Sugiyama, Takashi Sakamaki, Megumi Ohtoshi, Masafumi Yamada
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Publication number: 20100296847Abstract: An insertion passage 104Y for inserting a suction nozzle 73Y fixed to an image forming apparatus is provided on a holder 102Y, and a connecting passage 114Y that connects the insertion passage 104Y and a toner storage section 106Y of the holder 102Y is provided. After the toner sent from bottle 101Y to the holder 102Y falls towards the connecting passage 104Y, the toner flows into the suction nozzle 73Y through the connecting passage 114Y and is then discharged out of the holder 102Y. An airtightness between the insertion passage 114Y and the suction nozzle 73Y inserted into the insertion passage 114 Y is superior than an airtightness between the bottle 101Y and the holder 102Y engaged with the bottle 101Y.Type: ApplicationFiled: August 2, 2010Publication date: November 25, 2010Inventors: Takeroh Kurenuma, Fumio Ogata, Seiji Terazawa, Masayuki Yamane, Kenzo Tatsumi, Kiyonori Tsuda, Emi Kita, Nobuyuki Taguchi, Satoshi Narumi, Kazuhisa Sudo