Patents by Inventor Taishi YAMASHITA

Taishi YAMASHITA 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).

  • TONER, DEVELOPER, TONER STORAGE UNIT, IMAGE FORMING APPARATUS, AND IMAGE FORMING METHOD
    Publication number: 20230195005
    Abstract: Provided is a toner including toner particles. Each of the toner particles includes a toner base particle including a binder resin, resin particles covering the toner base particle, and zinc stearate particles serving as an external additive. In each of the toner particles, a coverage rate of the toner base particle with the resin particles is 30% or greater and 70% or less. The zinc stearate particles have a volume average particle diameter of 3 ?m or greater and 20 ?m or less.
    Type: Application
    Filed: December 20, 2022
    Publication date: June 22, 2023
    Inventors: Taishi YAMASHITA, Yohichi KITAGAWA, Tsukiko TAKAHASHI, Mitsuaki HIROSE, Daisuke INOUE