Patents by Inventor Uto SYU

Uto SYU 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 device including developer carrying member and containing two-component developer and image forming apparatus including the developing device
    Patent number: 11874615
    Abstract: A developing device includes a developing container, a first stirring conveyance member, a second stirring conveyance member, a developer carrying member including a developing sleeve and a magnet, and a regulation member. The regulation pole in the magnet has a region extending over 10° or more in which a maximum value of a vertical magnetic force is not more than 65 [mT] and a vertical magnetic force gradient is not more than 0.3 [mT/°]. A peak position of the vertical magnetic force gradient of the regulation pole is arranged at a position opposed to the second stirring conveyance member, and when a value of the vertical magnetic force gradient and a value of the vertical magnetic force at the peak position of the vertical magnetic force gradient are indicated as A [mT/°] and K [mT], respectively, A?2.8 and A×K?62.5 are satisfied.
    Type: Grant
    Filed: July 7, 2022
    Date of Patent: January 16, 2024
    Assignee: KYOCERA DOCUMENT SOLUTIONS INC.
    Inventors: Tamotsu Shimizu, Akihiro Watanabe, Ryo Yamada, Uto Syu, Yuji Toyota, Yasuhiro Tauchi
  • DEVELOPING DEVICE AND IMAGE FORMING APPARATUS INCLUDING THE SAME
    Publication number: 20230022669
    Abstract: A developing device includes a developing container, a first stirring conveyance member, a second stirring conveyance member, a developer carrying member including a developing sleeve and a magnet, and a regulation member. The regulation pole in the magnet has a region extending over 10° or more in which a maximum value of a vertical magnetic force is not more than 65 [mT] and a vertical magnetic force gradient is not more than 0.3 [mT/°]. A peak position of the vertical magnetic force gradient of the regulation pole is arranged at a position opposed to the second stirring conveyance member, and when a value of the vertical magnetic force gradient and a value of the vertical magnetic force at the peak position of the vertical magnetic force gradient are indicated as A [mT/°] and K [mT], respectively, A?2.8 and A×K?62.5 are satisfied.
    Type: Application
    Filed: July 7, 2022
    Publication date: January 26, 2023
    Applicant: KYOCERA Document Solutions Inc.
    Inventors: Tamotsu SHIMIZU, Akihiro WATANABE, Ryo YAMADA, Uto SYU, Yuji TOYOTA, Yasuhiro TAUCHI