Abstract
A stable and accurate numerical simulation technique is proposed to investigate performance of the transfer system using a biased transfer roller(BTR) in electrophotography. A one-dimensional layer-structured model was used to calculate distribution of electric field and current under air discharge. Concentration of generated ozone was also calculated. As results of calculations for a typical black and white laser printer, it was shown that (1) a transfer system using a semi-conductive BTR under constant current operation was robust against variation in resistance of media, and (2) concentration of ozone in the BTR system was two orders lower than that in the system using a conventional corona device.