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VI.
CHARGING
AND
CLEANING
UNITS
A.
Drum Unit
_..~
1.
Outline
The drum, primary corona unit, and cleaner of the copier are constructed
as a single entity which
is referred to as the drum unit.
Clean&
blade
Figure 4-49
2.
Cleaning
the Drum
I)
Open the top unit, and remove
the drum
unit; see p. 4-l 3.
2)
Clean the surface of the drum with a soft
cloth coated with toner.
Note:
1.
Turn the drum in the direction it turns
during copy operation;
otherwise,
the
cleaning blade will be deformed.
2.
Clean the drum with a soft cloth; do
not use paper, lint-free or others, as it
will damage the drum.
3.
Clean the drum as quickly as possible,
and avoid exposure
to light as much
as possible.*
1
If exposed
to
light
with
an
intensity
of
1,500
Iux. (general office
lighting) for five
minutes and left alone in the dark for five
minutes
thereafter,
the
drum
may recover
and may not present any practical problem;
nevertheless,
avoid
exposure
to
sun-
light. The rays of the sun has an intensity
of between
about 10,000
and 30,000
Iux.
Note:
When mounting the drum unit, make sure that
the
air
blocking
sheet
is positioned
as
in
Figure 4-50.
@
Air blocking sheet
Figure 4-50
COPYRIGHT
019~98 CANON
INC.
CANON
HP-1010 RN.0 DEC. 1999 PRINTEA
IN JAPAN
lIMPRIME
AU JAPONI
4-17
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