Development Unit Contact Mechanism; Contact Mechanism - Ricoh G157 Service Manual

DEVELOPMENT UNIT

6.6.4 DEVELOPMENT UNIT CONTACT MECHANISM

Contact Mechanism

[A]
[B]
[C]
[D]
inside the copier. There is one spring on each right rail, and another spring on each
left rail. Pushed by these springs, each development unit stays away from the OPC
belt when it does not develop toner images.
R S
IGHT IDE
The development drive gear moves the right side of each development unit (
6.6.3).
L S
EFT IDE
There are four development solenoids [A][B][C][D] on the left side of the copier:
one for each development unit. When the solenoid is on, it keeps the lever [F] on
the leftmost gear [G]. This gear is on the same shaft as the spring clutch [H]. Each
spring clutch engages the toner return gear [I] on a development unit.
When the machine starts development:
1. The drive power of the development motor is transferred to the development
roller ( 6.6.3). This roller drives the toner return gear [I].
2. The development solenoid [E] goes on. The lever [F] holds the leftmost gear
[G].
3. The spring clutch [H] stops when the leftmost gear stops. But the toner return
gear [I] keeps on turning.
4. The development unit moves toward the OPC belt.
5. The development unit contacts the OPC belt.
G157
CÓPIA NÃO CONTROLADA
[E]
[F]
[G]
[H]
S
TANDING
G157D929.WMFF
Each development unit moves on the rails
6-24
CÓPIA NÃO CONTROLADA
[I]
B
Y
G157D930.WMFF
SM