Image Quality Limit Precaution - Fuji Xerox DocuCentre SC2020 Service Manual

3.2.5 Image Quality Limit Precaution

Image Quality Problem Name SUB
1 Roll Marks PH
2 Condensation Copy Fusing
Unit
3 Corrugation Stripes PH
4 Gloss Uneven Side 2 Fusing
Unit
5 Background on Coated Paper Deve
6 Smear Transfer When the lead edge of paper reaches the Secondary
Version 1.1
DC SC2020
Details
Rubber roll mark or toner wax component may stick dur-
ing duplex print or after continuous printout depending
on the paper. This is frequently seen in gloss paper type.
Sometimes patches of water droplets may be found on
paper that is printed right after machine start up.
Depending on the paper, there may be Pinch Roll traces
or minor scratches in the paper feed direction. This is
more likely to occur with special paper such as Gloss.
Roughness of the image may appear on the back side
with duplex print on gloss paper.
The degree of fogging becomes higher for gloss paper
compared to plain paper.
Transfer, it immediately increases the Secondary Trans-
fer section load and causes the IBT Drive Roll speed to
change (decrease in speed).
This speed change changes the relative velocity differ-
ence of photo receptor and IBT Belt surface in K color
primary transfer part, which may cause a smear (image
disorder) 96mm from the paper edge.
Table 1
Occurrence Condition
Environmen Side-1
t Side-2 Media
All Side-1 Stands out
Side-2 even more
with Gloss
paper type
All - Hydrated
paper is a
stress.
All Heavyweight
gloss paper.
All - Coated
All All Coated •
All • It
becomes
more
stressful
if the
basis
weight is
thicker.
• It will
stand out
more with
Gloss
paper.
05/2014
3.2.2 How to use the image quality troubleshooting (IPS)
3-31
Others
Conditions Interim Measures Details
Change to a lighter paper type.
(However there might be an issue of fixing failure)
Use fresh paper.
Use substitute paper (Non-gloss, lightweight
paper).
Lower the image density.
After Raise the developing bias DC component by 10 ~
stop- 20V and reduce the fogging on the drum. (Individual
ping for support)
a long However, this will sacrifice the reproducibility of fine
period lines and highlight sections.
of time
under
high
humidity
• Print
with
high
image
density
BW Mode Change the value of NVM740-033 (Plain paper/
Recycled paper/Fine quality paper), 740-034
(Heavyweight/Label L), 740-035 (Extra Heavy-
weight/Label H/Postcard/Envelope), 740-036
(Gloss paper1), 740-037 (Gloss paper2) to 01.
By changing the above NVM and selecting the
above paper setting, IOT will perform FC Mode
operation regardless of the Color Mode setting of
the controller for Monochrome Print.
However, keep in mind that Yellow, Magenta, Cyan
Toner, Xero-CRU, processing machine will be con-
sumed during BW Print as well.
Image Quality Troubleshooting