Ricoh B234 - Supplying Toner to the Development Unit

TONER SUPPLY AND RECYCLING
B234/B235/B236/D101/D102/D103 6-102 SM
6.13.3 SUPPLYING TONER TO THE DEVELOPMENT UNIT
The toner bottle motor turns the toner
bottle [A]. This spills toner into the toner
entrance tank [B].
Toner collected from the drum cleaning
unit is also sent to the toner entrance
tank where it mixes with fresh toner (see
page 6-105).
The toner bank motor drives the toner
transport coil via the toner supply coil
clutch (see page 6-106). The revolving
coil [C] inside the transport tube
transports the toner to the toner supply
cylinder [D].
The toner supply cylinder [E] contains a
small agitator motor [F] and a toner end
sensor [G]. The agitator prevents toner
clumping in the cylinder. The sensor
monitors the level of toner in the cylinder.
The toner supply pump motor [H] pumps
toner from the toner supply cylinder to
the toner hopper [I]. The toner supply
pump [J] is a "dry" powder pump driven
by an impeller. There is no problem with
an increase in pressure inside the toner
hopper. One filter is sufficient to vent
pressure from the hopper. The toner
pump motor sensor [K] checks that the
motor is working.
B234D902E.WMF
B234D902C.WMF
B234D902D.WMF
[A]
[B]
[C]
[D]
[E]
[F]
[G]
[H]
[I]
[J]
[K]