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3. OPERATIONS
AND TIMING
-
~ D. Adjustment
-
~
1.
image Leading
Edge Non-
Reproduced
Area
There is a white strip on the bottom of
the copyboard
glass in the position shown in
the figure below. if bias is being applied to
the grid of the primary
corona
while
the
scanner
is passing
the white
strip,
the
leading edge of the copy will be reproduced
blank. if the leading edge non-image
width
is outside the standards,
adjust the timing at
which the grid bias goes from OFF to ON in
the service mode (tU3
).
,-\ \
Suriace
of copyboard
glass
Approx.
1Omm
Figure 3-49
The standard
image leading edge non-
reproduced
area on a DIRECT
copy of a
test sheet is 2.0 f 1.5 mm.
---.
'I
Figure 3-49
I
A higher setting
( Co3 )
increases the
leading
edge non-image
width;
in units of
~
0.25 mm.
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