发明名称 |
Toner for electrophotography, and image fixing process, image forming process, image forming apparatus and process cartridge using the same |
摘要 |
A toner for electrophotography contains a binder resin, a charge control agent, and a colorant. The colorant is a black iron oxide compound containing 10 to 45% by weight of titanium component calculated in terms of Ti atom in relation to Fe atom when measured by wavelength dispersive X-ray fluorescence spectrometry. Peaks at Bragg angle 2theta of the toner to CuKalpha X-ray are peak A at 32.9 degrees ±0.3 degrees and peak B at 35.5 degrees ±0.3 degrees, and X ray intensity ratio between peaks A and B (A/B) is in the range of 0.3 to 2.0 at a scan speed of 0.5 to 4 degrees/min.
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申请公布号 |
US7217485(B2) |
申请公布日期 |
2007.05.15 |
申请号 |
US20040800636 |
申请日期 |
2004.03.16 |
申请人 |
RICOH COMPANY, LTD. |
发明人 |
HASEGAWA KUMI;AOKI MITSUO;SHU BING;SAWADA TOYOSHI;SHIRAISHI KEIKO;NAGAYAMA MASASHI;KURAMOTO SHINICHI |
分类号 |
G03G9/08;G03G9/083;G03G9/087;G03G9/09;G03G9/097;G03G15/20 |
主分类号 |
G03G9/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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