Patents by Inventor Eriko KOKUBUN

Eriko KOKUBUN 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 and image forming apparatus
    Patent number: 10901342
    Abstract: A developing device includes an agitating transport device, a density detecting device, and an attracting device. The agitating transport device has a transport path and transports developer including a magnetic carrier while agitating the developer. The density detecting device detects density of the developer in the transport path of the agitating transport device. The attracting device is provided in the agitating transport device and has magnetic poles of one and another polarities exposed to the transport path facing the density detecting device so as to attract the developer by a magnetic force.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: January 26, 2021
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Kiyoshi Sako, Eriko Kokubun
  • Developing device and image forming apparatus
    Patent number: 10877428
    Abstract: A developing device includes: a developer storage unit that stores a developer; a developer transporting unit that is connected to the developer storage unit through an opening portion; a closing member that openably closes the opening portion; and a loosening section that acts simultaneously with opening of the opening portion by the closing member to loosen the developer at an inner end portion of the developer storage unit, opposite to the opening portion.
    Type: Grant
    Filed: October 25, 2019
    Date of Patent: December 29, 2020
    Assignee: FUJI XEROX CO.. LTD.
    Inventors: Kiyoshi Sako, Eriko Kokubun
  • DEVELOPING DEVICE AND IMAGE FORMING APPARATUS
    Publication number: 20200310338
    Abstract: A developing device includes: a developer storage unit that stores a developer; a developer transporting unit that is connected to the developer storage unit through an opening portion; a closing member that openably closes the opening portion; and a loosening section that acts simultaneously with opening of the opening portion by the closing member to loosen the developer at an inner end portion of the developer storage unit, opposite to the opening portion.
    Type: Application
    Filed: October 25, 2019
    Publication date: October 1, 2020
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Kiyoshi SAKO, Eriko KOKUBUN
  • DEVELOPING DEVICE AND IMAGE FORMING APPARATUS
    Publication number: 20200033759
    Abstract: A developing device includes an agitating transport device, a density detecting device, and an attracting device. The agitating transport device has a transport path and transports developer including a magnetic carrier while agitating the developer. The density detecting device detects density of the developer in the transport path of the agitating transport device. The attracting device is provided in the agitating transport device and has magnetic poles of one and another polarities exposed to the transport path facing the density detecting device so as to attract the developer by a magnetic force.
    Type: Application
    Filed: February 22, 2019
    Publication date: January 30, 2020
    Applicant: FUJI XEROX CO.,LTD.
    Inventors: Kiyoshi SAKO, Eriko KOKUBUN