05/2014
3-34
DC SC2020
3.2.2 How to use the image quality troubleshooting (IPS)
Version 1.1
Image Quality Troubleshooting
20 Heavyweight paper image
bleeding
Transfer The paper jumps up after the paper rear edge goes
through the Reg Shoot and move closer to the center
transfer belt.
Due to the electric discharge phenomenon occurs in
secondary transfer prenip part, part of axial direction
around 25mm from the rear edge of heavyweight paper
may get blurred (Toner gets scattered).
All • Basis
weight is
heavy.
•The
paper
resil-
ience is
strong
•The
paper
feeding
direction
and the
direction
of the
paper
weave is
parallel
•K color
is easy
to occur
• Tends
to occur
when
the
paper
leading
edge is
curled
up.
Down curl the rear edge of the paper.
21 Detachment unevenness/
Detachment failure/Rib line/Fix-
ing failure
Fusing
Unit
If there is a high density image part, gloss unevenness/
detachment failure/rib line/fixing failure may occur.
All Side-1
Side-2
Paper such as
gloss paper/
hydrated
paper or paper
with weak
resistance
• Use fresh paper.
• Reverse the image.
(Make sure there is no high density image on
the front edge.)
• Lower the density.
• Lower the high density with TRC Adjust.
• Lower the Cin.
• If it occurs in LEF feed, switch the feeding
direction from LEF feed to SEF feed.
22 Toner Droplet Contamination Deve Toner smear in drops may occur. All All All • After
stop-
ping for
a long
period
of time
under
high
humidity
•Print
with
high
image
density
Perform processing machine stirring mode when it
is left under high humidity environment for a long
period of time.(NVM762-119: 0 => 1)
Table 1
Image Quality Problem Name SUB Details
Occurrence Condition
Interim Measures Details
Environmen
t
Side-1
Side-2 Media
Others
Conditions
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