Development Section - Xerox Phaser 3450 Service Manual

CIRCUIT DESCRIPTION
< Engine Operating Description >
LSU
2.Charging
3.Exposure
4.Development
C/R
7.Fixing
S/R
D/R
OPC
8.Exit
1.Feeding
H/R
P/R
T/R
PTL
EXIT FEED
SENSOR SENSOR
6.Transfer
5.Pre-Transfer
[ Fig 2 ]

11.2.2.4 Development Section

From the contact surface where OPC drum and the Developer Roller rotate in opposite direction, Toner with it's (-) electric
characteristics transfers to the exposed part (-150V) of the OPC drum due to the electric potential difference. But the areas
not exposed (-800V) do not transfer.
11.2.2.5 Transfer Section
OPC
Max +4.1KV
T/R
GND
The toner from the surface of the OPC drum is transferred to the paper by the transfer roller. In other words, the toner from
the surface of the OPC drum is transferred by the transfer roller charged with approximately +1.0kV(300~ 4100V
adjustable). At this time, the adjustable voltage of 300~ 4100V is decided by the temperature and humidity. This process
is called transfer.
Service Manual
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