Drive Mechanism; Developer Mixing - Ricoh B291 Service Manual

6.9.2 DRIVE MECHANISM

The feed/development motor [A]
drives the development roller [B]
through the gears and the paddle
roller gear [C].
The drive shaft engages and
disengages the paddle roller gear
when the development unit is
inserted into and removed from the
machine.
NOTE: The development drive
gears are helical gears,
quieter than normal gears.

6.9.3 DEVELOPER MIXING

#
[D]
The dual mixing roller consists of the outer paddle [A] and the inner auger [B].
The outer paddle moves developer to the front
development roller. Developer that spills off by the doctor blade
the holes [C] in the outer paddle, and is transported to the rear
auger.
While the dual mixing roller is moving the developer, some developer also passes
back to the development unit through the holes in the bottom of the paddle roller
%
. New toner from the toner bottle and recycled toner from the toner collection coil
both enter the development unit at [D].
SM
CÓPIA NÃO CONTROLADA
[B]
"
[C]
[A]
#
%
6-61
CÓPIA NÃO CONTROLADA
DEVELOPMENT
[A]
[B]
#
%
B195D941.WMF
"
and supplies it to the
# passes through
$
by the inner
B291/B295/B296/B297
[C]
B195D940.WMF
[C]
$