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.

Date of Patent:
May. 02, 2017

Filed:

Aug. 06, 2015
Applicant:

Fuji Xerox Co., Ltd., Tokyo, JP;

Inventors:

Yosuke Tsurumi, Kanagawa, JP;

Motoko Sakai, Kanagawa, JP;

Takuro Watanabe, Kanagawa, JP;

Masaaki Usami, Kanagawa, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 9/10 (2006.01); G03G 9/00 (2006.01); G03G 9/08 (2006.01); G03G 9/107 (2006.01);
U.S. Cl.
CPC ...
G03G 9/0823 (2013.01); G03G 9/107 (2013.01); G03G 9/1075 (2013.01);
Abstract

An electrostatic charge image developer includes an electrostatic charge image developing carrier containing a ferrite particle and an electrostatic charge image developing toner containing metallic particles whose resistance is from 10Ωcm to 10Ωcm in an electric field of 10,000 V/cm, wherein the electrostatic charge image developing carrier satisfies the following formula (1): 0.9≦R/R≦1.0 (1), wherein Rrepresents the resistance of the electrostatic charge image developing carrier in an electric field of 2,400 V/cm, and Rrepresents the resistance of the electrostatic charge image developing carrier in an electric field of 19,200 V/cm.


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