Modeling of ozone formation by a contact charger roller

Ozone formation by a contact charger roller was modeled on the basis of a one-dimensional static plasma reaction. The results of the investigation showed that though the calculated rate of ozone emission was about 1.7 times smaller than the experimental result, effects of applied ac voltage and its frequency qualitatively agreed with experiments. The following conclusions were deduced from the investigation: (1) the rate of ozone formation is roughly estimated using the present model; (2) the rate of ozone formation is large under high applied voltage and high-frequency operation, but the effect of the roller resistance is minor; and (3) it was proposed that a normalized cumulative charge density be minimized to suppress ozone formation. The present method may be utilized for the design of a contact charging subsystem and its operating conditions to reduce ozone emission.