Copystar Ri 2530, Service Manual

Page: 268 / 686

2DF
2-1-12
2-1-4 Developing section
The developing section consists of the developing unit and the toner container.
The developing unit consists of the developing roller where a magnetic brush is formed, the doctor blade and the
developing spirals that agitate the toner.
When the toner sensor (TNS) detects a low toner level in the developing unit, the toner replenishment signal is output to
the main PCB (MPCB). The main PCB (MPCB) that has received the signal turns on the toner replenishment solenoid
(TNFSOL) and replenishes toner from the toner container to the developing unit.
Also, the toner container sensor (TCS) checks whether or not toner remains in the toner container.
Figure 2-1-13 Developing section
Right developing spiral
Left developing spiral
Developing roller
Developing paddle
Flow of the toner
Figure 2-1-14 Flow of the toner
1
Developing unit housing
2
Developing roller
3
Toner sensor (TNS)
4
Doctor blade
5
Right developing spiral
6
Left developing spiral