Brother HL-3450CN Service Manual page 72

6 Belt Cleaning
The belt cleaning process means that the residual toner adhering to the OPC belt surface is
mechanically scavenged.
(1) Structure of Belt Cleaning
The blade for the belt cleaning is located relative to the OPC belt cartridge as shown in
Fig.4-8.
(2) Process of Belt Cleaning (Refer to Fig.4-20.)
i) There is residual toner on the OPC belt as it has not been completely transferred in
the drum transfer process.
ii) Residual toner is mechanically scavenged by the blade edge.
iii) The scavenged residual toner is collected in the waste toner pack by the waste
toner feeder.
Belt discharging
(Erase lamp)
Drum transferring
Fig. 4-20
4-19
HL-3450CN SERVICE MANUAL
Belt cleaning
(Blade)