Lexmark 5021-0XX - Manual (Page 64)

1-38 Service Manual
5021-0XX
Details of the transfer system
Second transfer (paper) process
In the second transfer process, the toner image on the transfer belt
is transferred to paper. See “Printer theory of operation” on
page 1-19 for second transfer roller location.
The transfer roller, normally separated from the transfer belt, is
positively biased by the power supply THV. The transfer roller
contacts the transfer belt as paper passes between the transfer
roller and the transfer belt. The positive bias of the transfer roller
causes the toner to release from the transfer belt and adhere to the
paper.