Patents by Inventor Shuji Tanaka

Shuji Tanaka 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: 8336399
    Abstract: A sensor system includes a first sensing device that includes a sensor, and first and second surrounding portions that surround the sensor at least partially, a second sensing device that comprises a sensor, and first and second surrounding portions that surround the sensor at least partially, wherein at least one of a combination of shapes of the first and second surrounding portions of the respective first and second sensing devices and a combination of physical properties of the first and second surrounding portions of the respective first and second sensing devices is configured such that a detection characteristic of the first sensing device is different from a detection characteristic of the second sensing device.
    Type: Grant
    Filed: October 13, 2010
    Date of Patent: December 25, 2012
    Assignees: Tohoku University, Kabushiki Kaisha Toyota Chuo Kenkyusho, Toyota Jidosha Kabushiki Kaisha
    Inventors: Masanori Muroyama, Masayoshi Esashi, Shuji Tanaka, Sakae Matsuzaki, Mitsutoshi Makihata, Yutaka Nonomura, Motohiro Fujiyoshi, Takahiro Nakayama, Ui Yamaguchi, Hitoshi Yamada
  • Publication number: 20120296063
    Abstract: Disclosed is a process for preparing a diaryl oxalate which comprises the step of transesterifying a dialkyl oxalate or/and an alkylaryl oxalate with an aryl alcohol in the presence of a tetra(aryloxy)titanium as a catalyst, wherein the tetra(aryloxy)titanium is fed into a reaction system of the transesterification as an aryl alcohol solution of the tetra(aryloxy)titanium which is prepared by reacting a tetraalkoxy titanium and an excess amount of the aryl alcohol and removing a by-producing alkyl alcohol.
    Type: Application
    Filed: January 20, 2011
    Publication date: November 22, 2012
    Inventors: Shuji Tanaka, Hirofumi Il
  • Publication number: 20120247226
    Abstract: Provided are multiple normal stress detection sensor units capable of detecting a normal stress, and a sheet layer portion. The sheet layer portion includes an exterior sheet layer portion, a force detection sheet layer portion incorporating normal stress detection units, and an intermediary layer sandwiched between the exterior sheet layer portion and the force detection sheet layer portion. The exterior sheet layer portion and the force detection sheet layer portion include multiple protrusions protruding in directions opposed to each other, and are disposed such that the protrusions engage each other with the intermediary layer interposed therebetween. Each normal stress detection sensor unit includes a central portion detection sensor device disposed immediately below a central portion of the protrusion provided on the force detection sheet portion, and at least two edge detection sensor devices disposed immediately below edge portions of the protrusion provided on the force detection sheet portion.
    Type: Application
    Filed: October 14, 2009
    Publication date: October 4, 2012
    Applicants: TOHOKU UNIVERSITY, TOYOTA JIDOSHA KABUSHIKI KAISHA, KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventors: Masanori Muroyama, Masayoshi Esashi, Shuji Tanaka, Sakae Matsuzaki, Mitsutoshi Makihata, Yutaka Nonomura, Motohiro Fujiyoshi, Takahiro Nakayama, Hitoshi Yamada, Ui Yamaguchi
  • Publication number: 20120254490
    Abstract: A touch sensor system includes buses, a plurality of touch sensor devices disposed on the buses, and an information integrating device that is connected to all the buses and integrates information from the touch sensor device. The touch sensor device includes a sensor unit and a signal processing unit that transmits a sensor data signal generated by processing an analog sensor signal to the information integrating device through the bus. The signal processing unit includes a digital converting unit, a threshold evaluating unit that gives a start permission of the signal process when a sensor value exceeds a preset threshold, an ID adding unit that adds a transmitter identification number to the sensor signal, and a data transmitting unit that outputs the sensor data signal to a signal line of the bus. Fast responses are made possible without increasing the amount of data and host processing load while including many touch sensor elements.
    Type: Application
    Filed: October 14, 2009
    Publication date: October 4, 2012
    Applicants: TOHOKU UNIVERSITY, TOYOTA JIDOSHA KABUSHIKI KAISHA, KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventors: Masanori Muroyama, Masayoshi Esashi, Shuji Tanaka, Sakae Matsuzaki, Mitsutoshi Makihata, Yutaka Nonomura, Motohiro Fujiyoshi, Takahiro Nakayama, Ui Yamaguchi, Hitoshi Yamada
  • Publication number: 20120217638
    Abstract: By forming a metal layer 14 on at least one of a connecting electrode 12 of a first substrate 10 and a connecting electrode 17 of a second substrate 15, placing the first substrate 10 and the second substrate 15 together in order that the connecting electrode 12 and the connecting electrode 17 face opposite to each other via the metal layer 14, increasing temperature up to anodic bonding temperature, and applying DC voltage between the first substrate 10 and the second substrate 15 while maintaining that temperature, the first substrate 10 and the second substrate 15 are anodically bonded, and at the same time by melting the metal layer 14, the connecting electrode 12 and the connecting electrode 17 are electrically connected. The method achieves anodic bonding of substrates with high yield and at the same time establishes wiring connection, effective for packaging.
    Type: Application
    Filed: September 1, 2010
    Publication date: August 30, 2012
    Applicant: TOHOKU UNIVERSITY
    Inventors: Shuji Tanaka, Masayoshi Esashi, Sakae Matsuzaki, Mamoru Mori
  • Patent number: 8254823
    Abstract: A waste toner storage unit detachably mountable to an image forming apparatus includes a waste toner container and an inner cover integrally attached to the waste toner container. The waste toner container stores waste toner recovered after an image forming process. The inner cover is located at a region of the waste toner storage unit that does not store waste toner.
    Type: Grant
    Filed: October 13, 2008
    Date of Patent: August 28, 2012
    Assignee: Ricoh Company, Ltd.
    Inventors: Hiroyuki Nagashima, Shuji Tanaka, Nobuo Kuwabara, Hiroshi Ono, Ken Amemiya, Masahiko Shakuto, Toshio Koike, Yuji Arai, Michiya Okamoto, Kenji Honjoh
  • Publication number: 20120199921
    Abstract: Provided is a technique for packaging a sensor structure having a contact sensing surface and a signal processing LSI that processes a sensor signal. The sensor structure has the contact sensing surface and sensor electrodes. The signal processing integrated circuit is embedded in a semiconductor substrate. The sensor structure and the semiconductor substrate are bonded by a bonding layer, forming a sensor device as a single chip. The sensor electrodes and the integrated circuit are sealed inside the sensor device, and the sensor electrodes and external terminals of the integrated circuit are led out to the back surface of the semiconductor substrate through a side surface of the semiconductor substrate.
    Type: Application
    Filed: October 13, 2010
    Publication date: August 9, 2012
    Applicants: TOHOKU UNIVERSITY, TOYOTA JIDOSHA KABUSHIKI KAISHA, KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventors: Shuji Tanaka, Masayoshi Esashi, Masanori Muroyama, Sakae Matsuzaki, Mitsutoshi Makihata, Yutaka Nonomura, Motohiro Fujiyoshi, Takahiro Nakayama, Ui Yamaguchi, Hitoshi Yamada
  • Patent number: 8185032
    Abstract: A used toner conveyance device includes a lateral conveyance member for conveying used toner substantially in the horizontal direction, and a vertical conveyance member for upwardly conveying the used toner transferred from the lateral conveyance member. The vertical conveyance member transfers the used toner to either a collection space or a next conveyance path. The vertical conveyance member stops its operation when a prescribed delay time has elapsed after the lateral conveyance member stops conveyance operation.
    Type: Grant
    Filed: March 12, 2008
    Date of Patent: May 22, 2012
    Assignee: Ricoh Company, Limited
    Inventors: Hiroshi Ono, Tokuya Ojimi, Shuji Tanaka, Ken Amemiya, Toshio Koike, Yuji Arai, Michiya Okamoto, Hiroyuki Nagashima, Nobuo Kuwabara, Masahiko Shakuto
  • Patent number: 8126354
    Abstract: A charging device includes a charging roller and a cleaning roller configured to make contact with the charging roller. The cleaning roller is rotated following the charging roller. A dynamic friction coefficient of a surface of the charging roller measured by a Euler belt method is equal to or larger than 0.5.
    Type: Grant
    Filed: December 4, 2007
    Date of Patent: February 28, 2012
    Assignee: Ricoh Company, Limited
    Inventor: Shuji Tanaka
  • Publication number: 20110229232
    Abstract: A lubricant applying device includes: a solid lubricant; an applying member that applies lubricant powder scraped off from the solid lubricant to an application target; a holding member that holds the solid lubricant; a biasing unit that biases the holding member to bring the solid lubricant on the holding member into contact with the applying member; and a regulating unit that regulates, when a force of a direction orthogonal to an endless movement direction of the applying member is applied from the applying member to the solid lubricant at a frictional surface therebetween, movement of the solid lubricant and the holding member in the orthogonal direction.
    Type: Application
    Filed: March 14, 2011
    Publication date: September 22, 2011
    Inventors: Takeshi Kojima, Masanori Kawasumi, Shuji Tanaka, Shin Kayahara, Takuya Suganuma, Hiroyuki Sugiyama, Yuji Ishikura
  • Patent number: 7964915
    Abstract: The invention provides a high voltage MOS transistor having a high source/drain breakdown voltage of about 300V and a low on-resistance. An N-type body layer is formed extending from a source layer side to under a gate electrode. A P-type second drift layer is formed in an epitaxial semiconductor layer by being diffused deeper than a first drift layer, extending from under the first drift layer to under the gate electrode and forming a PN junction with the body layer under the gate electrode. A surface of the body layer between this second drift layer and the source layer serves as a channel region. The first drift layer is formed at a distance from a left end of the gate electrode where electric field concentration easily occurs.
    Type: Grant
    Filed: February 21, 2007
    Date of Patent: June 21, 2011
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Shuji Tanaka, Shuichi Kikuchi, Kiyofumi Nakaya, Kazuhiro Yoshitake
  • Publication number: 20110083517
    Abstract: A sensor system includes a first sensing device that includes a sensor, and first and second surrounding portions that surround the sensor at least partially, a second sensing device that comprises a sensor, and first and second surrounding portions that surround the sensor at least partially, wherein at least one of a combination of shapes of the first and second surrounding portions of the respective first and second sensing devices and a combination of physical properties of the first and second surrounding portions of the respective first and second sensing devices is configured such that a detection characteristic of the first sensing device is different from a detection characteristic of the second sensing device.
    Type: Application
    Filed: October 13, 2010
    Publication date: April 14, 2011
    Applicants: TOHOKU UNIVERSITY, KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masanori MUROYAMA, Masayoshi ESASHI, Shuji TANAKA, Sakae MATSUZAKI, Mitsutoshi MAKIHATA, Yutaka NONOMURA, Motohiro FUJIYOSHI, Takahiro NAKAYAMA, Ui YAMAGUCHI, Hitoshi YAMADA
  • Patent number: 7844198
    Abstract: An electrophotographic photoreceptor includes, a cylindrical photoreceptor pipe; at least one flange which is attached to an opening of one end of the photoreceptor pipe, and which is provided with a shaft part projecting outward from the one end at a shaft center position of the photoreceptor pipe; and an earth member which is arranged to penetrate through the shaft part of the at least one flange, and which is provided on its inward side with at least one first contact part which contacts an inner circumference of the photoreceptor pipe, and on its outward side with a second contact part.
    Type: Grant
    Filed: January 8, 2009
    Date of Patent: November 30, 2010
    Assignee: Ricoh Company, Ltd.
    Inventors: Nobuo Kuwabara, Hiroyuki Nagashima, Shuji Tanaka, Hiroshi Ono, Ken Amemiya, Masahiko Shakuto, Toshio Koike, Yuji Arai, Michiya Okamoto
  • Patent number: 7831189
    Abstract: A lubricant applying unit, included in a process cartridge provided in an image forming apparatus, includes a solid lubricant, a lubricant supporting unit to support the solid lubricant, a lubricant holder to accommodate the solid lubricant supported by the lubricant supporting unit, a pressing mechanism located between the lubricant supporting unit and the lubricant holder and designed to press the solid lubricant against a lubricant applying member, and a frictional resistance reducing member to reduce a frictional resistance produced at sliding contact portions between the lubricant supporting unit and internal surfaces of the lubricant holder.
    Type: Grant
    Filed: January 22, 2007
    Date of Patent: November 9, 2010
    Assignee: Ricoh Company, Ltd.
    Inventors: Hiroomi Harada, Shuji Tanaka, Naohiro Kumagai
  • Publication number: 20100278558
    Abstract: 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: Application
    Filed: April 12, 2010
    Publication date: November 4, 2010
    Inventors: 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
  • Patent number: 7826786
    Abstract: In an image forming apparatus, an area applied with a lubricant, i.e., an area of a lubricant layer having a uniform thickness, is obtained by spreading the lubricant by a lubricant smoothing blade. The area applied with a lubricant covers an area cleaned by a cleaning blade, i.e., a contact portion of the cleaning blade with a photoconductor.
    Type: Grant
    Filed: December 6, 2005
    Date of Patent: November 2, 2010
    Assignee: Ricoh Company, Limited
    Inventors: Takeo Suda, Shinichi Kawahara, Takatsugu Fujishiro, Tokuya Ojimi, Takeshi Tabuchi, Masato Yanagida, Haruji Mizuishi, Teruyuki Kasuga, Hiroomi Harada, Shuji Tanaka, Takaaki Tawada, Hiroshi Ono, Ken Amemiya, Toshio Koike, Yuji Arai, Masanori Kawasumi, Takuzi Yoneda, Masami Tomita, Yutaka Takahashi, Yoshio Hattori, Keiichi Yoshida
  • Patent number: 7769321
    Abstract: After a functional unit is pushed into the innermost position within the image forming apparatus main body, the unit is locked to the image forming apparatus main body by engaging a first locking member pivotally attached to a casing of the unit with a second locking member held by the casing to be movable vertically and by bringing the second locking member in pressure contact with a restricting member fixed to the image forming apparatus main body.
    Type: Grant
    Filed: February 9, 2006
    Date of Patent: August 3, 2010
    Assignee: Ricoh Company, Limited
    Inventor: Shuji Tanaka
  • Publication number: 20100151270
    Abstract: A process of forming an ultrafine crystal layer in a workpiece constituted by a metallic material. The process includes: performing a machining operation on a surface of the workpiece, so as to impart a large local strain to the machined surface of the workpiece, where the machining operation causes the machined surface of the workpiece to be subjected to a plastic working that causes to have large local strain in the form of a true strain of at least one, such that the ultrafine crystal layer is formed in a surface layer portion of the workpiece that defines the machined surface of the workpiece. Also disclosed are a nanocrystal layer forming process, a machine component having the ultrafine crystal layer or the nanocrystal layer, and a machine component producing process of producing the machine component.
    Type: Application
    Filed: November 10, 2009
    Publication date: June 17, 2010
    Inventors: Minoru Umemoto, Yoshikazu Todaka, Tadashi Suzuki, Toshiichi Ota, Akihiro Yamashita, Shuji Tanaka
  • Patent number: 7734219
    Abstract: A structure which increases positioning precision of a blade member to a rotating member, an image forming apparatus, and a method of manufacturing a unit frame. A first reference surface of a boss provided on a surface of a frame to which a blade is contacted is formed by a first mold that forms a positioning hole for positioning a rotating member. The first reference surface supports the blade member to prevent the blade member from moving to a weight direction. With this arrangement, there is no manufacturing error of the first reference surface due to a mold assembling error. As a result, precision of positioning the blade member to the rotating member can be increased.
    Type: Grant
    Filed: March 8, 2006
    Date of Patent: June 8, 2010
    Assignee: Ricoh Company, Limited
    Inventors: Shuji Tanaka, Takatsugu Fujishiro
  • Patent number: 7714160
    Abstract: An alkyl nitrite is produced with high efficiency by bringing a nitrogen monoxide gas into contact with an aqueous solution of an alkyl alcohol and nitric acid in a reactor 2, which aqueous solution may be a liquid fraction generated in an alkyl nitrite-production process in which an alkyl alcohol is reacted with nitrogen monoxide and oxygen in a reaction column 1.
    Type: Grant
    Filed: September 21, 2004
    Date of Patent: May 11, 2010
    Assignee: Ube Industries, Ltd.
    Inventors: Ryoji Sugise, Shuji Tanaka, Hirofumi Ii, Kazuaki Mii