发明名称 |
Electrophotographic photoconductor and electrophotographic image forming apparatus using the photoconductor |
摘要 |
An electrophotographic photoconductor including an electroconductive substrate, and a charge generating layer including a charge generating material and a charge transporting layer including a charge transporting material, which are overlaid and which are formed overlying one side of the electroconductive substrate, wherein the charge generating material includes an asymmetric disazo pigment and a metal-free phthalocyanine pigment, and wherein a ratio of the asymmetric disazo pigment to the metal-free phthalocyanine pigment is from 1.5:1 to 5:1 by weight and the asymmetric disazo pigment has the following formula (I):Cp1-N=N-A-N=N-Cp2(I)wherein A represents a divalent group which is connected to each nitrogen atom of the adjacent azo groups through a carbon atom of said A group; and Cp1 and Cp2 independently represents a residual group of a coupler, wherein Cp1 is different from Cp2.
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申请公布号 |
US6136483(A) |
申请公布日期 |
2000.10.24 |
申请号 |
US19990383191 |
申请日期 |
1999.08.26 |
申请人 |
RICOH COMPANY, LTD. |
发明人 |
SUZUKI, YASUO;AOTO, JUN;KINOSHITA, TAKEHIKO |
分类号 |
G03G5/047;G03G5/06;(IPC1-7):G03G5/047 |
主分类号 |
G03G5/047 |
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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