Patents by Inventor Takeichi Ryuta

Takeichi Ryuta 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).

  • Image forming apparatus and process cartridge
    Patent number: 7003255
    Abstract: An image forming process and apparatus, the apparatus including a toner container, a transfer belt below the toner container, a process cartridge below the transfer belt, and an imaging device below the process cartridge. The process cartridge includes a rotating image carrier having an image carrier surface, a brush roller in contact with the image carrier surface, a charging member in contact with the image carrier surface and configured to transfer a charge to the image carrier surface, and a casing including a miler in contact with the image carrier surface and arranged to separate the brush roller from the charging member.
    Type: Grant
    Filed: September 22, 2003
    Date of Patent: February 21, 2006
    Assignee: Ricoh Company, Ltd.
    Inventors: Masanori Kawasumi, Kazuhiko Umemura, Satoshi Narumi, Hiroshi Hosokawa, Takeichi Ryuta, Kiyonori Tsuda, Yuji Arai
  • Image forming apparatus and process cartridge
    Publication number: 20040131381
    Abstract: An image forming process and apparatus, the apparatus including a toner container, a transfer belt below the toner container, a process cartridge below the transfer belt, and an imaging device below the process cartridge. The process cartridge includes a rotating image carrier having an image carrier surface, a brush roller in contact with the image carrier surface, a charging member in contact with the image carrier surface and configured to transfer a charge to the image carrier surface, and a casing including a miler in contact with the image carrier surface and arranged to separate the brush roller from the charging member.
    Type: Application
    Filed: September 22, 2003
    Publication date: July 8, 2004
    Inventors: Masanori Kawasumi, Kazuhiko Umemura, Satoshi Narumi, Hiroshi Hosokawa, Takeichi Ryuta, Kiyonori Tsuda, Yuji Arai