Development Unit; Rollers And Agitators; Replacing Units; Memory Chip - Ricoh Gestetner LANIER SAVIN G071 Service Manual

6.6.2 DEVELOPMENT UNIT

Rollers and Agitators

Each development unit has 3 rollers and 3 agitators (2 toner cartridge agitators and
1 development agitator):
Toner cartridge agitators:
Development agitator:
Toner supply roller:
Development roller:
Doctor roller:

Replacing Units

Near-end condition: "Replace Development Unit, xxxx-unit" is displayed when a
development unit has made the 'PM period' number of prints (K: 120K, CMY: 60K).
If more than one unit reaches PM period at the same time, the messages for each
unit will be displayed one after the other.
End condition: When toner end is detected while the development unit is in a near-
end condition, that unit enters the end condition. The machine cannot print. The
end condition is cleared when that unit is replaced. There is no need to replace all
4 units. However, if each colour (C, M, Y) is used at the same rate, they will enter
the end condition at about the same time.
The user can replace only the K unit, the color units (Y, C, and M), or all units (K,
Y, C, and M) at the same time.
The color units are available for the user as a set, but can be replaced individually
if required (individual units are available as spare parts).
Recovery: Each new development unit contains a starter toner cartridge. When the
machine detects the memory chip on the new starter cartridge, it will clear the
development unit end condition. The memory chip on a normal toner cartridge
cannot clear the development unit end condition.
A starter toner cartridge has more paddles on the toner cartridge agitators than a
normal toner cartridge does. This is to transport toner more quickly from the
cartridge into the toner hopper.
When a development unit has to be replaced, use a starter toner cartridge in the
development unit even if toner remains in the used normal toner cartridge. After the
toner in the starter toner cartridge is all used up, the normal toner cartridge can be
loaded into the development unit.

Memory Chip

Each toner cartridge contains a memory chip, which contains information on
whether the cartridge is "new" or "not new".
SM
CÓPIA NÃO CONTROLADA
Evenly mixes the toner in the cartridge, and
sends it to the development unit
Evenly mixes the toner in the development unit,
and sends it to the toner supply roller
Supplies the development roller with toner
Transfers the toner to the OPC
Regulates the amount of the toner on the
development roller
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CÓPIA NÃO CONTROLADA
DEVELOPMENT
G071