Air Flow And Toner Flow - Ricoh B202 Service Manual

DEVELOPMENT

Air Flow and Toner Flow

[B]
[C]
[A]
[D]
[E]
[F]
[G]
B178D550.WMF
The air tube [F] and the toner tube [E] are connected to the joint [C] at the bottom
of the toner cartridge holder. This joint contains an inner pipe [A] and an outer pipe
[B]. These two pipes are L-shaped. The inner pipe goes through the outer pipe.
The inner pipe is longer than the outer pipe.
The toner goes through the inner pipe [A], and reaches the toner tube [E] at the
bottom end of the pipe. The toner passes the sensor windows [G] on its way to the
toner tube. The windows are transparent and are at the front side and the rear side
of the pipe. The light emitted from the toner end sensor [D] goes through this area
if there is no toner in the pipe.
The airflow generated by the air pump goes through the outer pipe [B], and comes
out of the four openings at the top end.
Toner Near End Detection
Toner end sensors [D] detect toner near end conditions ( 6.2.6).
SM 6-63 B202/B178/B180