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:
Mar. 16, 2021
Filed:
Feb. 06, 2020
Fuji Xerox Co., Ltd., Tokyo, JP;
Naoki Ota, Kanagawa, JP;
Yusuke Fukuda, Kanagawa, JP;
Masataka Kuribayashi, Kanagawa, JP;
Katsuyuki Kitajima, Kanagawa, JP;
FUJI XEROX CO., LTD., Tokyo, JP;
Abstract
An image forming apparatus includes an image holding member, a charging unit, an electrostatic image forming unit, a developing unit that includes an electrostatic image developer and develops the electrostatic image with the electrostatic image developer, a transfer unit, a fixing unit, a replenishment toner container that includes a replenishment toner that is to be supplied into the developing unit and discharges the replenishment toner by rotation of the replenishment toner container, a replenishment toner container mounting unit that holds the replenishment toner container and rotates the replenishment toner container, and a toner supply pass that connects the replenishment toner container mounting unit to the developing unit. The replenishment toner includes toner particles and silica particles having a number average particle size of 110 nm to 130 nm, a large-diameter-side number particle size distribution index (upper GSDp) of less than 1.080, and an average circularity of 0.94 to 0.98, wherein 80 number % or more of the silica particles have a circularity of 0.92 or more.