Invention Grant
- Patent Title: Electrostatic charge image developer, developer cartridge, and process cartridge
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Application No.: US14819939Application Date: 2015-08-06
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Publication No.: US09639014B2Publication Date: 2017-05-02
- Inventor: Yosuke Tsurumi , Motoko Sakai , Takuro Watanabe , Masaaki Usami
- Applicant: FUJI XEROX CO., LTD.
- Applicant Address: JP Tokyo
- Assignee: FUJI XEROX CO., LTD.
- Current Assignee: FUJI XEROX CO., LTD.
- Current Assignee Address: JP Tokyo
- Agency: Oliff PLC
- Priority: JP2015-034748 20150225
- Main IPC: G03G9/10
- IPC: G03G9/10 ; G03G9/00 ; G03G9/08 ; G03G9/107

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 1010 Ωcm to 1013 Ωcm in an electric field of 10,000 V/cm, wherein the electrostatic charge image developing carrier satisfies the following formula (1): 0.9≦RB/RA≦1.0 (1), wherein RA represents the resistance of the electrostatic charge image developing carrier in an electric field of 2,400 V/cm, and RB represents the resistance of the electrostatic charge image developing carrier in an electric field of 19,200 V/cm.
Public/Granted literature
- US20160246194A1 ELECTROSTATIC CHARGE IMAGE DEVELOPER, DEVELOPER CARTRIDGE, AND PROCESS CARTRIDGE Public/Granted day:2016-08-25
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