ELECTROPHOTOGRAPHIC ELECTRIFYING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an electrophotographic electrifying device in which good electrification characteristics can be maintained for a long time and injection of charges can be performed in a good state. SOLUTION: This electrophotographic electrifying device is equipped with an electrophotographic photoreceptor and an electrifying member disposed in contact with the photoreceptor. By applying voltage on the electrifying member, the electrophotographic photoreceptor is charged. The volume resistance of the photoreceptor is specified to >=1×10<8>Ωcm. The electrifying member has magnetic particles containing 0.05 to 1.2wt.% silicon component. The magnetic particle has a surface layer containing a polyolefin resin produced by polymn. on the surface of the magnetic particle. The volume resistance of the magnetic particles is controlled to >=1×10<4>Ωcm and <=1×10<11>Ωcm.