PAPER TRANSFER AND SEPARATION
G071 6-42 SM
6.8.3 POWER SUPPLY
Electric Power Path
High voltage supply [A] → Terminal [B] → Transfer roller axis [C]
[A]: High voltage supply
[B]: Terminal
[C]: Transfer roller axis
[D]: Temperature-humidity sensor
(inside the rear-right cover)
[E]: Discharge plate (negative
charge)
Transfer Roller Bias
Normally, a constant current is applied to the transfer roller shaft [C].
The conductive bearing allows the electrical connection between the bias terminal
[B] and the transfer roller shaft.
The current varies with paper type, size, and thickness as well as humidity.
Discharge Plate
The discharge plate [E] discharges the remaining charge on the paper going past
the transfer roller. This helps the paper separate from the transfer belt.
Temperature/Humidity Control
The temperature-humidity sensor [D] is inside the rear-right cover. The sensor is
used to control the power for the transfer roller (! 5.2.2).
The temperature and humidity can be read with SP2-912 (Temp_HumDisp).
G070D402.WMF
[B]
[A]
[C]
[D]
[E]
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