Ricoh A229 - Transfer Belt Unit Lift Mechanism

IMAGE TRANSFER AND PAPER SEPARATION
2-82
A229 SM
2.7.3 TRANSFER BELT UNIT LIFT MECHANISM
The transfer belt lift solenoid [A] inside the transfer belt unit turns on to raise the
transfer belt into contact with the drum. The front lever [B] and the rear lever [C] are
connected to the solenoid by links [D], and they push up the stays [E] when the
solenoid turns on.
The support spring [F] helps the solenoid to raise the transfer belt.
The solenoid turns off after the copy job is finished. The transfer belt must be
released from the drum for the following reasons:
1. To prevent the ID sensor pattern on the drum from being rubbed off by the
transfer belt, because the transfer belt is located between the development unit
and the ID sensor.
2. To decrease the load on the bias roller cleaning blade, it is better to prevent
toner on non-image areas (for example V
D
, V
H
, ID sensor patterns developed
during process control data initial setting) from being transferred onto the
transfer belt.
3. To prevent drum characteristics from being changed by coming into contact
with material of the rubber belt.
A229D506.WMF
[A]
[B]
[C]
[D]
[E]
[F]
[E]