CONDUCTIVE ROLL AND METHOD OF ITS MANUFACTURE

摘要

PROBLEM TO BE SOLVED: To provide a conductive roll for an electrophotographic device where a good image without any unevenness in density can be obtained by controlling non uniformity in resistance value of the roll by eliminating unevenness in sticking of adhered matter to a surface of the roll. SOLUTION: In the device, a conductive roll 1 is installed faced in parallel with an electrode 2 for discharging and the surface of the electrically conductive roll 1 is corona treated by applying voltage to the electrode 2 while rotating the electrically conductive roll 1. The electrically conductive roll 1 that has its roll surface corona processed has no unevenness in sticking to the surface of the roll, the resistance value of the roll is maintained uniform over the whole roll even when utilized for a long period of time and a stable function can be maintained.