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3.
Detection
of Waste
Toner
Figure
3-33
shows
a rear
view
of
the
drum unit.
The drum drive gear, .which
is driven by
the main motor,
is engaged
with
gear A to
drive the gear. (See Figure 3-33.)
For transmission
of drive to gear B, gear A
is pressed
by arm A in the direction
of the
arrow ( e
). (See Figure 3-33.)
The drive is then transmitted
by gear B to
the sweeping
blade drive gear to rotate
the
blade. The waste toner scraped by the sweep-
ing blade is thereby
sent to the waste
toner
receptacle
by the work of the sweeping blade.
When the waste toner unit becomes full of
waste toner, the load imposed on the sweep-
ing blade increases,
and gear A rotates
over-
riding the boss of gear B. (See Figure 3-34.)
,--_
When gear A overrides the boss of gear B.
arm A is pushed up, and the waste toner de-
j
tection
switch
is pressed
(arrow: +
in Figure 3-33).
by way of arm B
At
the
time, (0)
mark
on the
control
panel starts to flash.
Advise the customer to make a service call
when this mark is ON.
ear
B
Sweeping
blade drive gear
Figure 3-32
\
\
I
direction
I
Gear A
Drum drive gear
Figure 3-33
Drum Unit (rear view)
3-24
COPK969l 01999 CAWOH
Inc.
CANON
HP-1010 AN.0 OEC. 1999 PAMlEO
IN JAPAI IIMPRIME
AU JAPONI
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