CQ
28
Offsetting and Residual
lmage Isolation
RAP
This RAP
is
used to isolate between an
offsetting and residual image copy quality
problem.
It
may be necessary to make
several copies to see if the problem can be
repeated.
Ask the customer for the document that
is
causing the problem.
Select a sheet of media, and draw a short
line
4 114
inches (108 mm) from the lead
edge and parallel to that edge.
Put the number
0 by one end of the line
drawn in step
2.
Use this prepared sheet
as the media for the next copy.
Select the normal contrast mode (middle
LED lit).
Insert the lead edge of the prepared
media with the marked side facing
down.
Start to make a copy, then press
STOP
when the line marked on the copy media
is
even with the outside edge of the
transport latching cover.
NOTE: The mark will move about
112
inch
(1.27cm) beyond the front cover
before the main drive stops.
7.
Open the transport latching cover and
remove the partially made copy. Ensure
that the copy
is
not dragged against the
photoreceptor or fuser roll.
8.
Examine the new copy
10
318
inches
(264mm) (circumference of the drum)
away from the lead edge.
NOTE: Locate the exact end of the fused
area
of
the image
by
wiping the
image with a finger.
9.
If there
is
a reprint of the lead edge
information in the unfused area of the
image, then the problem
is
residual
image. This
is
caused by either
a
cleaning
problem,
a
dirty cleaning blade, or an
incorrect electrostatic value. Go to the
CQ-
15
Residual lmage
RAP.
10.
Examine the images within the unfused
area. If the reprint
is
not in the unfused
area, then remove the oil dispense
assenibly arid check the fuser roll for
a
dry ink image.
If
there
is
a
dry
ink
image
on the roll, then go to the
CQ-13
Offsetting RAP.
NOTE:
If
you need to repeat this procedure,
remove dry ink from the fuser roll by
making a blank copy in between
attempts and discarding the copy.
10
318
INCHES
(264 mm)
LEAD EDGE
-J
4
114
INCHES
(1
08 mm)
THE PREPARED MEDIA
LEAD EDGE
IMAGE
\
EXAMINE
THIS
AREA
A CHECK FOR RESIDUAL IMAGES
FUSED
AREA
UNFUSED
AREA
7/92
251012515 3-109
CQ
28
Offsetting1 Residual Image Isolation
RAP
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