Oki OKIFAX4550 Maintenance Manual page 146

Process
4
EP drum
Transfer roller
5
6
Cleaning roller
Power
supply
41309401TH Rev.4
Illustration
Paper
Power
supply
Heater
Heater roller
Paper
Back-up roller
EP drum
Transfer roller
Description
The recording paper is placed over the
Image drum surface and a positive
charge, opposite in polarity to the
toner, is applied to the reverse side of
the paper from the transfer roller. The
toner is attracted by the positive charge
and is transferred to the paper. The
toner charged negative that is attracted
to the Image drum surface is trans-
ferred to the upper side of the record-
ing paper by the positive charge on the
lower side of the paper.
The unfused toner image is fused on
the paper under heat and pressure as it
passes between the heater roller and
the back-up roller.
Residual toner on the Image drum is
attracted to the cleaning roller tempo-
rarily by static electricity on the Image
drum surface.
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