| 摘要 |
PURPOSE: To obtain excellent durability and environmental characteristics by constituting a resistor of a resin or rubber having specified volume resistivity and thickness and arranging a discharging member which reduces the charges on the resistor body by electrification or exposure at the position facing the resistor. CONSTITUTION: Charges are supplied to a photoreceptor 1 by an electrifying member 10 having a conductive base body 19 and a resistor 20. Then the charges on the electrifying member 10 are reduced by a discharging member 21 by electrification or exposure. In this method, the resistor 20 is a resin or rubber layer of thickness between >=10μm and <=20μm which has >=10<12>Ω.cm volume resistivity at normal temp. and normal humidity under 100V applied. By this constitution, the material for the resistor 20 as the surface layer can be selected from a wide variety of materials and stable electrification with little change with time can be performed in a simple structure.
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