Ricoh B205 Service Manual page 405

DEVELOPMENT
6.9.2 DRIVE
[A]
[B]
[D]
[C]
The main motor [A] drives the development roller [B] and mixing augers [C] through
a train of gears and the development drive shaft [D]. When the PCU is pushed in,
the development drive shaft engages the development roller gear.
The development drive gears (except for the gears in the development unit) are
helical gears. These gears are quieter than normal gears.
SM 6-45 B205/B209/D007/D008