| 发明名称 | Electrostatic charge image developer, developer cartridge, and process cartridge | ||
| 摘要 | 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. | ||
| 申请公布号 | US9639014(B2) | 申请公布日期 | 2017.05.02 |
| 申请号 | US201514819939 | 申请日期 | 2015.08.06 |
| 申请人 | FUJI XEROX CO., LTD. | 发明人 | Tsurumi Yosuke;Sakai Motoko;Watanabe Takuro;Usami Masaaki |
| 分类号 | G03G9/10;G03G9/00;G03G9/08;G03G9/107 | 主分类号 | G03G9/10 |
| 代理机构 | Oliff PLC | 代理人 | Oliff PLC |
| 主权项 | 1. An electrostatic charge image developer comprising: 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, and wherein the surface roughness Sm of the ferrite particle is from 1.0 μm to 5.0 μm, and the maximum height Ry thereof is from 0.2 μm to 0.7 μm. | ||
| 地址 | Tokyo JP | ||