| 摘要 |
A conductive roller which can form images of consistent quality and does not cause image failures such as formation of blank spots and a method for inspecting the roller. The conductive roller having a metallic core and at least one rubber elastic layer provided on the outer peripheral surface of the core, the rubber elastic layer being formed from a conductive rubber to which conductivity has been imparted by carbon powder, wherein the conductive roller satisfies the relationship represented by formula (1): Zr/Zc≧5  (1), wherein Zr (&OHgr;) represents a resistance component and Zc (&OHgr;) represents a capacitive reactance component, the resistance component Zr (&OHgr;) and the capacitive reactance component Zc (&OHgr;) being calculated respectively from impedance Z (&OHgr;) and phase difference &thetas;, when the impedance Z (&OHgr;) is measured upon application of an AC voltage of 0.2 V at a frequency of 1 Hz to the rubber elastic layer.
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