Ricoh Aficio FX10, Service Manual

Page: 62 / 284

2.2.9. Transfer and Separation
Instead of using a transfer corona wire, this machine uses a transfer roller,
which touches the drum surface.
A constant current of +4
±
0.2
µ
A is applied to the transfer roller [A] from the
power pack [B]. The positively biased transfer roller pulls negatively charged
toner off the drum. The curvature of the drum and the antistatic brush helps
the paper to drop away from the drum.
Temperature and humidity have less effect on the supply of ions when the
transfer current is held constant. With a constant voltage, ions may dissipate
in some conditions.
[B]
[A]
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H523D536.wmf
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June 10th, 1997 DETAILED SECTION DESCRIPTIONS
PRINTING
2-33