Oki OKIOFFICE 84 Service Manual page 187

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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

transferred to the upper side of

the recording 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 temporarily by static

electricity on the Image drum