Patents by Inventor Kazuhiro Seguchi

Kazuhiro Seguchi 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: 6963715
    Abstract: A color image forming apparatus comprises photoconductor drums on which toner images of each color are developed and formed; an endless intermediate transfer belt arranged in a contactable state with the photoconductor drums to run; first bias transfer rollers which perform first bias transfer in which the toner images of each color are transferred from the photoconductor drums onto the intermediate transfer belt; a second bias transfer roller which performs second transfer in which the toner images on the intermediate transfer belt are transferred onto paper; and a separation unit which, when a maximum print length of an image is below a length from a transfer point A to a transfer point B, separates the photoconductor drums and the intermediate transfer belt from each other after all first bias transfer of the toner images to be transferred on the last paper in a first print job has been completed, before second bias transfer onto the last paper is started and after second bias transfer onto paper immediate
    Type: Grant
    Filed: June 2, 2003
    Date of Patent: November 8, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kazunori Kanekura, Kazuhiro Seguchi, Yuji Nagai, Yuzo Kawano
  • Publication number: 20030223785
    Abstract: A color image forming apparatus comprises photoconductor drums on which toner images of each color are developed and formed; an endless intermediate transfer belt arranged in a contactable state with the photoconductor drums to run; first bias transfer rollers which perform first bias transfer in which the toner images of each color are transferred from the photoconductor drums onto the intermediate transfer belt; a second bias transfer roller which performs second transfer in which the toner images on the intermediate transfer belt are transferred onto paper; and a separation unit which, when a maximum print length of an image is below a length from a transfer point A to a transfer point B, separates the photoconductor drums and the intermediate transfer belt from each other after all first bias transfer of the toner images to be transferred on the last paper in a first print job has been completed, before second bias transfer onto the last paper is started and after second bias transfer onto paper immediate
    Type: Application
    Filed: June 2, 2003
    Publication date: December 4, 2003
    Applicant: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kazunori Kanekura, Kazuhiro Seguchi, Yuji Nagai, Yuzo Kawano
  • Patent number: 6075962
    Abstract: A toner cartridge includes a housing having a space for toner, and a cover forming a toner storing space within the housing. The cover is secured to the housing with an expandable hot-melt elastic adhesive to prevent toner leakage. This arrangement improves assembly of the cartridge, and allows the discarded cartridges to be recycled.
    Type: Grant
    Filed: February 3, 1999
    Date of Patent: June 13, 2000
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kazuhiro Seguchi, Noboru Miyahara
  • Patent number: D445822
    Type: Grant
    Filed: August 30, 2000
    Date of Patent: July 31, 2001
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Takashi Tosa, Toshimi Hattori, Tamio Kayahara, Kenji Fukuda, Kazuhiro Seguchi
  • Patent number: D534548
    Type: Grant
    Filed: November 23, 2005
    Date of Patent: January 2, 2007
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Seiji Urano, Toshiaki Kikui, Toshihiko Matsuda, Kazuhiro Seguchi, Shiro Yamashita