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. 03, 2020
Filed:
Feb. 09, 2018
Fuji Xerox Co., Ltd., Tokyo, JP;
Kotaro Yoshihara, Kanagawa, JP;
Daisuke Ishizuka, Kanagawa, JP;
Narumasa Sato, Kanagawa, JP;
Yuka Kawamoto, Kanagawa, JP;
Erina Saito, Kanagawa, JP;
Takahisa Tatekawa, Kanagawa, JP;
Noriyuki Mizutani, Kanagawa, JP;
FUJI XEROX CO., LTD., Tokyo, JP;
Abstract
An electrostatic charge image developer includes: a toner that includes toner particles which contain a polyester resin and a styrene (meth)acrylic resin and form a sea-island structure which includes a sea portion containing the polyester resin and an island portion containing the styrene (meth)acrylic resin on a surface of the toner particle, and has an exposure rate of the styrene (meth)acrylic resin in a range of from about 5 atom % to about 20 atom %; and an external additive, and a carrier whose fluidity and bulk density under environment of a temperature of 25° C. and a humidity of 50% satisfy Expression: 65.0≤fluidity×bulk density≤72.5.