Patents by Inventor Yoichi Nakamura

Yoichi Nakamura 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: 6720121
    Abstract: An electrophotographic photoconductor and method of manufacturing thereof exhibits excellent characteristics of residual potential and repetition potential by containment of an additive of a compound. The electrophotographic photoconductor includes a conductive substrate and a photosensitive layer on the substrate, in which the photosensitive layer contains tri(4-nitrophenyl) phosphate.
    Type: Grant
    Filed: April 3, 2002
    Date of Patent: April 13, 2004
    Assignee: Fuji Electric Imaging Device Co. Ltd.
    Inventors: Yoichi Nakamura, Koichi Aizawa, Teruo Sasaki, Kenichi Hara
  • Publication number: 20030228535
    Abstract: An electrophotographic photoconductor exhibits excellent electrophotographic performance, particularly high sensitivity. A method of manufacturing an electrophotographic photoconductor includes forming a photosensitive layer exhibiting high sensitivity using a coating liquid. The electrophotographic photoconductor includes a photosensitive layer that contains photoconductive substances, a principal component of which is a metallophthalocyanine compound and a subcomponent of which is a phthalocyanine compound having central elements of hydrogen. The content of the subcomponent is in a proportion of 1 &mgr;mol to 200 mmol with respect to 1 mol of the principal component. The manufacturing method uses a coating liquid containing photoconductive substances, including principal component of a metallophthalocyanine compound and a subcomponent of a phthalocyanine compound having central elements of hydrogen in a proportion of 1 &mgr;mol to 200 mmol with respect to 1 mol of the principal component.
    Type: Application
    Filed: April 10, 2003
    Publication date: December 11, 2003
    Applicant: Fuji Electric Imaging Device Co., Ltd.
    Inventors: Teruo Sasaki, Shinjirou Suzuki, Yoichi Nakamura
  • Publication number: 20030197482
    Abstract: Then an end effecter is used to operate a heavy object, a large bending moment may act on arms of a manipulator to bend them. Consequently, an operating section cannot precisely control positions. Thus, according to the present invention, three arms 14 are attached to a base section 11, each of the arms 14 being composed of a first link section 15 having one end connected to a rotating shaft 12 on the base section 11 and a second link section 17 connected to the first link section 15 via another rotating shaft 16. These arms 14 support an operating section 19. The second link section 17 is connected to the rotating shaft 16 and to the operating section 19 using universal joints 18a and 18b. Direct acting driving means 13 is composed of a driving shaft 13a and a driving source that advances and retreats the driving shaft 13a. The driving shaft 13a is driven to advance and retreat to move the operating section 19 to a desired position.
    Type: Application
    Filed: April 18, 2003
    Publication date: October 23, 2003
    Applicant: Murata Kikai Kabushiki Kaisha
    Inventors: Koichi Osuka, Yoichi Nakamura
  • Patent number: 6613488
    Abstract: A phthalimide salt compound is contained in a photosensitive material having a charge generating function. Such a photosensitive material exhibits high retention rates of the surface charge. An electrophotographic photoconductor comprising such a photosensitive material is useful in, for example, printers, photocopiers, and facsmilie machines.
    Type: Grant
    Filed: October 6, 2000
    Date of Patent: September 2, 2003
    Assignee: Fuji Electric Imaging Devices Co., Ltd.
    Inventors: Yoichi Nakamura, Shinjirou Suzuki, Hideki Kina, Kenichi Hara, Teruo Sasaki
  • Publication number: 20030142208
    Abstract: An image reading apparatus includes a light source for irradiating light to an original image, a photoelectric transducing device for detecting reflected or transmitted quantities of the irradiated light, and for transducing the light into an electric signal, and a control mechanism for adjusting an emission region of the light source to a size of the original image. The light source includes a surface-emitting electroluminescent device that emits light of wavelengths corresponding to at least the three primary colors.
    Type: Application
    Filed: January 27, 2003
    Publication date: July 31, 2003
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventor: Yoichi Nakamura
  • Publication number: 20030139176
    Abstract: A portable terminal carried by an operator of a target apparatus (e.g., an electronic component mounting system or a mounting apparatus incorporated in such a system), comprises: communicating means for conducting wireless communication; first information acquiring means for acquiring first information related to the target apparatus from the target apparatus via the communicating means; second information sending means for sending second information to at least one external information terminals via the communicating means based on the first information; third information acquiring means for acquiring third information from at least one external information terminal responding to the second information via the communicating means; and information outputting means for outputting an information output based on the third information.
    Type: Application
    Filed: August 28, 2002
    Publication date: July 24, 2003
    Inventors: Hiroaki Fujiwara, Hiroyuki Inoue, Masanori Yasutake, Yoshimasa Takeda, Yoichi Nakamura, Kazumasa Okumura
  • Patent number: 6569587
    Abstract: An electrophotographic photosensitive body has a photosensitive layer formed on a conductive substrate. The photosensitive layer contains a phthalocyanine compound as a photoconductive material, wherein the content of a phthalocyanine dimer compound in the layer that contains the phthalocyanine compound is present from about 100 nmol to about 300 mmol per 1 mol of the phthalocyanine compound. The resulting electrophotographic photosensitive body has excellent potential retention properties.
    Type: Grant
    Filed: January 25, 2001
    Date of Patent: May 27, 2003
    Assignee: Fuji Electric Imaging Co., Ltd.
    Inventors: Teruo Sasaki, Kenichi Hara, Shinjiro Suzuki, Yoichi Nakamura, Hideki Kina
  • Publication number: 20030070498
    Abstract: An automatic sample analyzer includes: a pipette, a pipette driving device which moves the pipette to a sample vessel present in a predetermined position to cause the pipette to suck up a sample from the sample vessel, and then moves the pipette to an open vessel provided in another predetermined position to cause the pipette to discharge the sample into the open vessel, and an analyzing section for analyzing the discharged sample, the pipette driving device comprising a vertically movable main arm and an elongated guide arm cantilevered by the main arm and extending horizontally, the guide arm having a smaller flexural rigidity than the main arm, wherein the main arm vertically moves the pipette when the sample is to be sucked up from the sample vessel, and the guide arm guides the pipette to the open vessel and then vertically moves the pipette when the sample is to be discharged into the open vessel.
    Type: Application
    Filed: September 6, 2002
    Publication date: April 17, 2003
    Inventors: Yasuhiro Ohyama, Kazuyuki Sakurai, Yoichi Nakamura, Noriyoshi Yoshida, Kazutoshi Tokunaga, Kouji Kasuya, Eiji Tanoshima, Toshihiro Kubota, Takaaki Nagai, Shuhei Kaneko, Masaharu Shibata, Seido Biwa, Toshihiro Ootani
  • Patent number: 6534965
    Abstract: A particle signal processing apparatus which processes a particle signal representative of characteristics of particles includes an amplifier having input and output terminals for amplifying a particle signal including serial pulses to output an output signal including the amplified serial pulses, a filter section for extracting a low frequency component from the output signal of the amplifier so that the extracted component is fed back into the input terminal as a negative feedback signal, and a feedback signal control section for allowing the filter section to fix the negative feedback signal when each of the amplified pulses rises and to hold the fixed negative feedback signal while the amplified pulse is larger than a threshold value.
    Type: Grant
    Filed: March 22, 2001
    Date of Patent: March 18, 2003
    Assignee: Sysmex Corporation
    Inventors: Kunio Ueno, Seiya Shinabe, Yoichi Nakamura
  • Patent number: 6489072
    Abstract: An electrophotographic photoconductor includes a conductive substrate and a photosensitive layer formed on a substrate. The photosensitive layer includes a phthalocyanine compound as a charge generation substance. An embodiment of the photosensitive layer contains a first phthalocyanine compound as a main component and a second phthalocyanine compound as a secondary component and as a result, has greater ability to generate negative charges than the ability of the first phthalocyanine compound.
    Type: Grant
    Filed: May 31, 2001
    Date of Patent: December 3, 2002
    Assignee: Fuji Electric Imaging Device Co., Ltd.
    Inventors: Teruo Sasaki, Yoichi Nakamura, Shinjirou Suzuki
  • Publication number: 20020172878
    Abstract: An electrophotographic photoconductor and method of manufacturing thereof exhibits excellent characteristics of residual potential and repetition potential by containment of an additive of a compound. The electrophotographic photoconductor includes a conductive substrate and a photosensitive layer on the substrate, in which the photosensitive layer contains tri(4-nitrophenyl) phosphate.
    Type: Application
    Filed: April 3, 2002
    Publication date: November 21, 2002
    Inventor: Yoichi Nakamura
  • Patent number: 6423459
    Abstract: A photosensitive layer of an electrophotographic photoconductor has at least one phthalocyanine compound, wherein the photosensitive layer contains a metal phthalocyanine compound bonded by an o-phthalonitrile compound as a ligand. The o-phthalonitrile ligand is present in an amount from about 100 nmol to about 200 nmol with respect to 1 mol of the phthalocyanine. The resulting electrophotographic photoconductor exhibits a high potential retention rate. A method for making such an electrophotographic photoconductor is also disclosed wherein a photosensitive layer is formed by coating, with a coating layer, to obtain a photosensitive layer having a high potential retention rate.
    Type: Grant
    Filed: November 21, 2000
    Date of Patent: July 23, 2002
    Assignee: Fuji Electric Imaging Device Co., Ltd.
    Inventors: Teruo Sasaki, Kenichi Hara, Yoichi Nakamura, Shinjirou Suzuki, Hideki Kina
  • Patent number: 6386475
    Abstract: An automatic winder that enables the number of yarn-supplying-bobbin feeding devices to be increased easily.
    Type: Grant
    Filed: September 19, 2000
    Date of Patent: May 14, 2002
    Assignee: Murata Kikai Kubushiki Kaisha
    Inventors: Hiroshi Mima, Yoichi Nakamura
  • Patent number: 6370750
    Abstract: The component (2) is first brought into point or line contact with the sheet (3) so as to avoid entrapment of air therebetween. The contact area between the component and the sheet is then gradually spread until the entire bottom surface of the component is adhered to the sheet.
    Type: Grant
    Filed: June 25, 2001
    Date of Patent: April 16, 2002
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Nobuya Matsumura, Shoji Sato, Akihiro Yamamoto, Yoshifumi Kitayama, Yoichi Nakamura
  • Publication number: 20020034699
    Abstract: An electrophotographic photoconductor includes a conductive substrate and a photosensitive layer formed on a substrate. The photosensitive layer includes a phthalocyanine compound as a charge generation substance. An embodiment of the photosensitive layer contains a first phthalocyanine compound as a main component and a second phthalocyanine compound as a secondary component and as a result, has greater ability to generate negative charges than the ability of the first phthalocyanine compound.
    Type: Application
    Filed: May 31, 2001
    Publication date: March 21, 2002
    Inventors: Teruo Sasaki, Yoichi Nakamura, Shinjirou Suzuki
  • Publication number: 20010032495
    Abstract: A particle signal processing apparatus which processes a particle signal representative of characteristics of particles includes an amplifier having input and output terminals for amplifying a particle signal including serial pulses to output an output signal including the amplified serial pulses, a filter section for extracting a low frequency component from the output signal of the amplifier so that the extracted component is fed back into the input terminal as a negative feedback signal, and a feedback signal control section for allowing the filter section to fix the negative feedback signal when each of the amplified pulses rises and to hold the fixed negative feedback signal while the amplified pulse is larger than a threshold value.
    Type: Application
    Filed: March 22, 2001
    Publication date: October 25, 2001
    Inventors: Kunio Ueno, Seiya Shinabe, Yoichi Nakamura
  • Publication number: 20010031409
    Abstract: An electrophotographic photosensitive body has a photosensitive layer formed on a conductive substrate. The photosensitive layer contains a phthalocyanine compound as a photoconductive material, wherein the content of a phthalocyanine dimer compound in the layer that contains the phthalocyanine compound is present from about 100 mmol to about 300 mmol per 1 mol of the phthalocyanine compound. The resulting electrophotographic photosensitive body has excellent potential retention properties.
    Type: Application
    Filed: January 25, 2001
    Publication date: October 18, 2001
    Inventors: Teruo Sasaki, Kenichi Hara, Shinjiro Suzuki, Yoichi Nakamura, Hideki Kina
  • Patent number: D480640
    Type: Grant
    Filed: March 4, 2002
    Date of Patent: October 14, 2003
    Assignee: Sysmex Corporation
    Inventors: Yasuhiro Oyama, Kazuyuki Sakurai, Yoichi Nakamura, Noriyoshi Yoshida, Kazutoshi Tokunaga
  • Patent number: D482793
    Type: Grant
    Filed: March 4, 2002
    Date of Patent: November 25, 2003
    Assignee: Sysmex Corporation
    Inventors: Yasuhiro Oyama, Kazuyuki Sakurai, Yoichi Nakamura, Noriyoshi Yoshida, Kazutoshi Tokunaga, Kouji Kasuya
  • Patent number: D482796
    Type: Grant
    Filed: March 4, 2002
    Date of Patent: November 25, 2003
    Assignee: Sysmex Corporation
    Inventors: Yasuhiro Oyama, Kazuyuki Sakurai, Yoichi Nakamura, Noriyoshi Yoshida, Kazutoshi Tokunaga, Masami Ishizaki