Patents by Inventor Junichi Nakahara

Junichi Nakahara 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).

  • Developing agent carrier manufacturing method, developing agent carrier, developing device and image forming apparatus
    Patent number: 8087170
    Abstract: A method for manufacturing a developing agent carrier of a hollow or solid cylindrical shape having an outer peripheral surface and an irregularity section formed on the outer peripheral surface to carry a developing agent is provided. The method comprises a step of preparing a base material of a hollow or solid cylindrical shape which is to become the developing agent carrier, the base material having an outer peripheral surface; and a step of forming the irregularity section by pressing dice for formation of the irregularity section against the outer peripheral surface of the base material.
    Type: Grant
    Filed: November 17, 2006
    Date of Patent: January 3, 2012
    Assignee: Seiko Epson Corporation
    Inventors: Noboru Sakurai, Yoichi Yamada, Junichi Nakahara, Masanao Kunugi, Tomohiro Aruga, Katsumi Okamoto
  • Developing Agent Carrier Manufacturing Method, Developing Agent Carrier, Developing Device and Image Forming Apparatus
    Publication number: 20070147906
    Abstract: A method for manufacturing a developing agent carrier of a hollow or solid cylindrical shape having an outer peripheral surface and an irregularity section formed on the outer peripheral surface to carry a developing agent is provided. The method comprises a step of preparing a base material of a hollow or solid cylindrical shape which is to become the developing agent carrier, the base material having an outer peripheral surface; and a step of forming the irregularity section by pressing dice for formation of the irregularity section against the outer peripheral surface of the base material.
    Type: Application
    Filed: November 17, 2006
    Publication date: June 28, 2007
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Noboru SAKURAI, Yoichi YAMADA, Junichi NAKAHARA, Masanao KUNUGI, Tomohiro ARUGA, Katsumi OKAMOTO