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: 7269364
    Abstract: An image forming apparatus includes a toner forced discharge treatment for executing a toner discharge mode in which toner inside a developing device is forcedly consumed, and a toner discharge judgment treatment capable of judging necessity of execution of the toner discharge mode based on a decision as to whether or not a toner state inside the developing device is in a state of leading to an image quality defect. Further, the apparatus includes a toner forced supply treatment for executing a toner supply mode in which new toner is supplied from a toner replenishment device to the developing device in addition to execution of the toner discharge mode.
    Type: Grant
    Filed: March 16, 2005
    Date of Patent: September 11, 2007
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Shuji Tanaka, Takashi Yukutake
  • Publication number: 20070200171
    Abstract: The invention provides a high voltage MOS transistor having a high gate breakdown voltage and a high source/drain breakdown voltage and having a low on-resistance. A gate electrode is formed on an epitaxial silicon layer with a LOCOS film being interposed therebetween. A P-type first drift layer is formed on the left side of the LOCOS film, and a P+-type source layer is disposed on the surface of the epitaxial silicon layer on the right side of the LOCOS film, being opposed to the first drift layer over the gate electrode. A P-type second drift layer is formed by being diffused in the epitaxial silicon layer deeper than the first drift layer, extending from under the first drift layer to under the left side of the LOCOS film. A recess is formed in a bottom portion of the second drift layer under the left end of the LOCOS film.
    Type: Application
    Filed: February 21, 2007
    Publication date: August 30, 2007
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Shuji Tanaka, Shuichi Kikuchi, Kiyofumi Nakaya
  • Publication number: 20070200195
    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: Application
    Filed: February 21, 2007
    Publication date: August 30, 2007
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Shuji Tanaka, Shuichi Kikuchi, Kiyofumi Nakaya, Kazuhiro Yoshitake
  • Patent number: 7261746
    Abstract: A manufacturing apparatus is provided comprising: inter-process carrying means for carrying a container between the process modules in a container unit, the container being capable of storing a plurality of intermediate products therein; intra-process carrying means for removing the intermediate products from the container and carrying the intermediate products within each process module in a single product state; and a plurality of processing means for performing the plurality of processes, respectively, within each process module, wherein the plurality of processing means are arranged substantially in the carrying direction of the intermediate products in accordance with the order of processes to be performed on the intermediate products, without arranging a plurality of processing means for performing the same kinds of processes on the intermediate products in a group.
    Type: Grant
    Filed: March 31, 2004
    Date of Patent: August 28, 2007
    Assignee: Seiko Epson Corporation
    Inventors: Shuji Tanaka, Yoshitake Kobayashi, Hisashi Fujimura
  • Publication number: 20070183824
    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: Application
    Filed: December 6, 2005
    Publication date: August 9, 2007
    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
  • Publication number: 20070172273
    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: Application
    Filed: January 22, 2007
    Publication date: July 26, 2007
    Inventors: Hiroomi Harada, Shuji Tanaka, Naohiro Kumagai
  • Publication number: 20070147884
    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: Application
    Filed: February 9, 2006
    Publication date: June 28, 2007
    Inventor: Shuji Tanaka
  • Patent number: 7222721
    Abstract: A transferring apparatus is provided between a plurality of carrying apparatuses, each carrying apparatus comprising support means for supporting carried products Wf, guide means for controlling the moving direction of the support means, the guide means being provided along processing apparatuses for processing the carried products Wf, and moving means for moving the support means along the guide means. The transferring apparatus includes synchronization control means for synchronizing the moving means of the one carrying apparatus with the moving means of the other carrying apparatus; and at least one hand-over means for receiving the carried products Wf from the support means of the one carrying apparatus and handing over the carried products Wf to the support means of the other carrying apparatus.
    Type: Grant
    Filed: March 3, 2006
    Date of Patent: May 29, 2007
    Assignee: Seiko Epson Corporation
    Inventors: Hisashi Fujimura, Shuji Tanaka, Yoshitake Kobayashi, Yasutsugu Aoki
  • Publication number: 20070081832
    Abstract: An image forming apparatus includes an image carrier configured to form a latent image and a development unit including a development member configured to develop the latent image forming on the image carrier with a developer, and a plurality of conveying members each including at least one spiral vane and configured to rotate around a spiral axis of the spiral vane to revolve and transfer the developer around the spiral axis in a direction along the spiral axis, the plurality of conveying members configured to transfer the developer sequentially from a conveying member to an adjacent conveying member and including a first conveying member arranged at a position closest to the development member to supply developer to the development member, wherein a number of the spiral vanes of the first conveying member are at least two and is also greater than the number of spiral vanes in the remaining conveying members.
    Type: Application
    Filed: October 6, 2006
    Publication date: April 12, 2007
    Inventors: Keiichi Yoshida, Yoshio Hattori, Shinichi Kawahara, Takatsugu Fujishiro, Shuji Tanaka
  • Publication number: 20070059067
    Abstract: A process cartridge including an image bearing member; a lubricant applicator, which includes a lubricant application member configured to apply a solid lubricant to the surface of the image bearing member; and a smoothing member configured to smooth the applied solid lubricant, and at least one of a charging device, a developing device and a cleaning device, wherein the amount of the solid lubricant present on a portion of surface of the image bearing member, which is located between the lubricant application member and the smoothing blade, is from 0.11 to 1.2 mg/m2. The smoothing member is preferably a blade having a JIS-A hardness of not less than 79°. The process cartridge is preferably assembled by a method including setting the lubricant smoothing member, the lubricant and the lubricant application member to a housing of the process cartridge; and then setting the image bearing member to the housing.
    Type: Application
    Filed: September 13, 2006
    Publication date: March 15, 2007
    Inventors: Shuji Tanaka, Shinichi Kawahara, Yoshiyuki Kimura, Hiroshi Hosokawa, Yoshio Hattori, Takeo Suda, Yutaka Takahashi, Takatsugu Fujishiro, Teruyuki Kasuga, Hiroomi Harada, Tokuya Ojimi, Masato Yanagida, Takaaki Tawada, Takeshi Tabuchi, Naohiro Kumagai, Chohtaroh Kataoka, Hidemasa Sato
  • Patent number: 7182201
    Abstract: A wafer carrying apparatus 20 for carrying intermediate products comprises: a conveyer 40 for carrying the intermediate products in the carrying direction; and a plurality of platforms 41 arranged in the conveyer 40 along the carrying direction of the intermediate products on the conveyer 40, each platform 41 being capable of mounting at least one intermediate product at a position in a direction crossing the carrying direction of the intermediate products on the conveyer 40.
    Type: Grant
    Filed: March 3, 2004
    Date of Patent: February 27, 2007
    Assignee: Seiko Epson Corporation
    Inventors: Hisashi Fujimura, Shuji Tanaka, Yoshitake Kobayashi, Yasutsugu Aoki
  • Patent number: 7179931
    Abstract: High-purity trimethylaluminum has the following impurity contents: organosilicon components?0.5 ppm, chlorine components?20 ppm, hydrocarbon components?1,000 ppm, Ca?0.05 ppm, Fe?0.05 ppm, Mg?0.05 ppm, Na?0.05 ppm, Si (Si components other than the organosilicon components)?0.07 ppm, Zn?0.05 ppm, and S?0.05 ppm. The high-purity trimethylaluminum can be obtained by removing impurities from crude trimethylaluminum through distillation and evaporation.
    Type: Grant
    Filed: June 17, 2005
    Date of Patent: February 20, 2007
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Takanobu Tsudera, Shuji Tanaka, Daisuke Iwai, Hiromi Nishiwaki, Takayuki Honma
  • Patent number: 7112691
    Abstract: A method of purifying an organometallic compound comprising distilling the organometallic compound for purification while blowing an inert gas through a vapor of the organopolysiloxane, thereby removing from the organometallic compound an impurity having a higher vapor pressure than the organometallic compound.
    Type: Grant
    Filed: June 17, 2005
    Date of Patent: September 26, 2006
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Takanobu Tsudera, Daisuke Iwai, Takayuki Honma, Hiromi Nishiwaki, Shuji Tanaka
  • Patent number: 7108121
    Abstract: An intermediate product transferring apparatus is provided for transferring an intermediate product W between a single-wafer carrying line for carrying the intermediate product W in a single-wafer manner and a manufacturing apparatus for manufacturing the intermediate product W includes a transferring robot for transferring the intermediate product W between the single-wafer carrying line and the manufacturing apparatus; and a buffer for temporarily storing the intermediate product W which is transferred from the single-wafer carrying line by the transferring robot or the intermediate product W which is processed by the manufacturing apparatus.
    Type: Grant
    Filed: March 4, 2004
    Date of Patent: September 19, 2006
    Assignee: Seiko Epson Corporation
    Inventors: Hisashi Fujimura, Shuji Tanaka, Yoshitake Kobayashi
  • Publication number: 20060163037
    Abstract: A transferring apparatus is provided between a plurality of carrying apparatuses, each carrying apparatus comprising support means for supporting carried products Wf, guide means for controlling the moving direction of the support means, the guide means being provided along processing apparatuses for processing the carried products Wf, and moving means for moving the support means along the guide means. The transferring apparatus includes synchronization control means for synchronizing the moving means of the one carrying apparatus with the moving means of the other carrying apparatus; and at least one hand-over means for receiving the carried products Wf from the support means of the one carrying apparatus and handing over the carried products Wf to the support means of the other carrying apparatus.
    Type: Application
    Filed: March 3, 2006
    Publication date: July 27, 2006
    Inventors: Hisashi Fujimura, Shuji Tanaka, Yoshitake Kobayashi, Yasutsugu Aoki
  • Publication number: 20060153583
    Abstract: An image forming apparatus includes a developer that develops a latent image to form an image, a separation unit that separates image information of a job image by color upon writing a latent image of the job image, a comparison unit that compares the image information by color separated by the separation unit with a threshold value previously set with respect to an image concentration, and a driving condition determination unit that determines a driving condition of the developer using a result of comparison by the comparison unit.
    Type: Application
    Filed: November 8, 2005
    Publication date: July 13, 2006
    Inventors: Takashi Yukutake, Shuji Tanaka, Toshikazu Tsumita, Toshiaki Tsuboi
  • Publication number: 20060130527
    Abstract: A method of fabricating a mold for glass press, characterized in that silicon carbide is deposited on the surface of a silicon mold, subsequently the deposited silicon carbide is bonded to a silicon carbide substrate, and thereafter the silicon mold is removed by etching. In this method of fabricating a mold for glass press, the bonding between the silicon carbide deposited on the silicon mold surface and the silicon carbide substrate can be strengthened by interposing a metal thin film.
    Type: Application
    Filed: March 22, 2004
    Publication date: June 22, 2006
    Inventors: Shuji Tanaka, Masayoshi Esashi
  • Patent number: 7051863
    Abstract: A transferring apparatus is provided between a plurality of carrying apparatuses, each carrying apparatus comprising support means for supporting carried products Wf, guide means for controlling the moving direction of the support means, the guide means being provided along processing apparatuses for processing the carried products Wf, and moving means for moving the support means along the guide means. The transferring apparatus includes synchronization control means for synchronizing the moving means of the one carrying apparatus with the moving means of the other carrying apparatus; and at least one hand-over means for receiving the carried products Wf from the support means of the one carrying apparatus and handing over the carried products Wf to the support means of the other carrying apparatus.
    Type: Grant
    Filed: March 11, 2004
    Date of Patent: May 30, 2006
    Assignee: Seiko Epson Corporation
    Inventors: Hisashi Fujimura, Shuji Tanaka, Yoshitake Kobayashi, Yasutsugu Aoki
  • Patent number: 7032739
    Abstract: An intermediate product carrying apparatus is provided for loading a carrier, which is carried between a plurality of process systems and stores a plurality of intermediate products, into the corresponding process system, and then transferring the plurality of intermediate products of the carrier to a single wafer carrying conveyer, which carries the intermediate products in a single wafer state to an intermediate product manufacturing apparatus provided in the process system. The intermediate product carrying apparatus comprising: an intermediate product transfer means provided in the process system, for loading the carrier, which is carried between process systems and which stores the plurality of intermediate products, into the corresponding process system, and transferring the intermediate products.
    Type: Grant
    Filed: March 30, 2004
    Date of Patent: April 25, 2006
    Assignee: Seiko Epson Corporation
    Inventors: Shuji Tanaka, Yoshitake Kobayashi, Hisashi Fujimura, Yasutsugu Aoki
  • Publication number: 20060067727
    Abstract: A charging device including a charging member configured to charge an image bearing member while the charging member is contacted with or is located so as to be close to the image bearing member when the charging device is set in an image forming apparatus; and a cleaning member configured to clean a surface of the charging member while contacting the surface of the charging member, wherein the pressure A at which the cleaning member is contacted with the charging member when the charging device is set in the image forming apparatus is greater than the pressure B at which the cleaning member is contacted with the charging member before the charging device is set in the image forming apparatus.
    Type: Application
    Filed: September 8, 2005
    Publication date: March 30, 2006
    Inventors: Takeo Suda, Shinichi Kawahara, Keiichi Yoshida, Yoshio Hattori, Shuji Tanaka