| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an electrophotographic toner harmless for human body or environment and excellent in dispersion state, workability, heat resistance and coloring power. <P>SOLUTION: The electrophotographic toner contains a black metal oxide having 20 to 100 nm number average particle size as a colorant by 10 to 40 wt.%, preferably 10 to 30 wt.%. More preferably, the electrophotographic toner contains a black metal oxide having 3×10<SP>-3</SP>to 15×10<SP>-3</SP>dielectric loss and≤10 Am<SP>2</SP>/kg saturation magnetization as the colorant. <P>COPYRIGHT: (C)2003,JPO</p> |
