Patents by Inventor Keitaro HAYASHI

Keitaro HAYASHI 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: 11988979
    Abstract: An image forming apparatus comprising: an image bearing member, a developing member that forms a toner image with a toner including a metal soap having a polarity opposite to that of the toner, a supply member that supplies the toner to the developing member, and a control unit that executes a metal soap supply operation of supplying the metal soap from the developing member to the image bearing member when an operation other than the image forming operation is executed, wherein the metal soap supply operation includes a first mode and a second mode, and a potential difference between the supply member and the developing member, which causes an electrostatic force in the direction from the supply member to the developing member to act on the metal soap, is smaller in the metal soap supply operation in the second mode than in the first mode.
    Type: Grant
    Filed: September 8, 2022
    Date of Patent: May 21, 2024
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hisashi Taniguchi, Bunro Noguchi, Shinichi Agata, Kodai Hayashi, Keitaro Nakata
  • Patent number: 11981053
    Abstract: A compression molding device, which can obtain a high compression molding force without lowering the efficiency of article production, and whose molding means has a long service life, is provided. In the compression molding device, a one-side mold assembly moving means (58) includes a toggle link mechanism including two links (62) and (64), and a toggle link mechanism operating means (60), while an opposite-side mold assembly moving means (108) includes a hydraulic cylinder mechanism. When a one-side mold assembly (16) and an opposite-side mold assembly (18) are to be brought from an open state into a closed state, the one-side mold assembly (16) is first moved to a nearly closed state by the one-side mold assembly moving means (58), and then the opposite-side mold assembly (18) is moved from the nearly closed state to the closed state by the opposite-side mold assembly moving means (108).
    Type: Grant
    Filed: December 9, 2019
    Date of Patent: May 14, 2024
    Assignees: NIPPON CLOSURES CO., LTD., TOYO SEIKAN GROUP ENGINEERING CO., LTD.
    Inventors: Akio Sato, Yoshihiro Kaitsuka, Shin Nakamura, Keitaro Hayashi, Hiroshi Takahashi, Mitsuo Kumata, Yukihito Nozaki, Tomoho Kikuchi, Kunihiko Hatazawa
  • Publication number: 20220063141
    Abstract: A compression molding device, which can obtain a high compression molding force without lowering the efficiency of article production, and whose molding means has a long service life, is provided. In the compression molding device, a one-side mold assembly moving means (58) includes a toggle link mechanism including two links (62) and (64), and a toggle link mechanism operating means (60), while an opposite-side mold assembly moving means (108) includes a hydraulic cylinder mechanism. When a one-side mold assembly (16) and an opposite-side mold assembly (18) are to be brought from an open state into a closed state, the one-side mold assembly (16) is first moved to a nearly closed state by the one-side mold assembly moving means (58), and then the opposite-side mold assembly (18) is moved from the nearly closed state to the closed state by the opposite-side mold assembly moving means (108).
    Type: Application
    Filed: December 9, 2019
    Publication date: March 3, 2022
    Inventors: Akio SATO, Yoshihiro KAITSUKA, Shin NAKAMURA, Keitaro HAYASHI, Hiroshi TAKAHASHI, Mitsuo KUMATA, Yukihito NOZAKI, Tomoho KIKUCHI, Kunihiko HATAZAWA