1St Transfer (Drum To Belt) - Dell 3010CN Service Manual

1.3.4 1st transfer (drum to belt)

In the "1st transfer" process, the toner image formed on the drum surface is transferred to the
surface of the belt inside XERO CRU by the 1st BTR (First Bias Transfer Roll).
1st BTR is a conductive roll, to which a positive voltage is applied from HVPS. The 1st BTR
contacts the rear side of the belt and applies a positive charge to the rear side of belt.
After the negative charged toner image on the drum surface is drawn by the positive charge on
the rear side of the belt, it is transferred from drum to belt.
Drum surface
HVPS
Un-transferred
toner
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1ST BTR
Drum
Potential on
drum surface
-V
0
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6 - 8
Chapter 6 Principle s of O peration
: Negative charge
: Positive charge
: Toner
Belt
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Belt surface
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