The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 28, 2020
Filed:
Jul. 19, 2019
Fuji Xerox Co., Ltd., Tokyo, JP;
Yuka Yamagishi, Kanagawa, JP;
Yutaka Saito, Kanagawa, JP;
Kazuhiko Nakamura, Kanagawa, JP;
Kazutsuna Sasaki, Kanagawa, JP;
Takashi Inukai, Kanagawa, JP;
Sakiko Takeuchi, Kanagawa, JP;
FUJI XEROX CO., LTD., Minato-ku, Tokyo, JP;
Abstract
A toner for electrostatic image development includes: toner base particles containing at least a nonionic surfactant, a binder resin, and a release agent; and an external additive. The content of the nonionic surfactant is from 0.05% by mass to 1% by mass inclusive based on the total mass of the toner. The external additive contains inorganic particles having an arithmetic mean particle diameter of from 50 nm to 400 nm inclusive and an average circularity of from 0.5 to 0.8 inclusive.