Brother HL-2700CN Service Manual page 63

1.1.3 Details of Each Process
1 Charging
The charging process means that OPC belt is evenly charged by the OPC charger roller
PU.
(1) Structure of the Charger Unit (Refer to Fig.4-8 and Fig.4-11)
i) OPC Charger roller PU is located as shown in Fig.4-8.
ii) Charge High Voltage is applied to the OPC charger roller PU.
iii) Brush surface of the charger roller contacts and charges the OPC belt surface
evenly.
(2) Process of Charging (Refer to Fig.4-12.)
i) The status of the OPC belt surface before charging is -CBV(V).
ii) OPC charger roller PU charges evenly the OPC belt surface till -V
generating negative charge..
CHV
OPC Belt
OPC Charger Roller PU
Fig.4-11
IV-10
Cleaning
(Blade)
Charging
Fig.4-12
(V) by
0
OPC Charger Roller PU