U
Unneevveenn D
Deennssiittyy oorr M
Moottttllee
Problem
Uneven Density or Mottle
Solutions
1. Perform
Adjust Image Transfer
.
• Use this feature to adjust the voltage ratio on the secondary bias transfer roll (2
nd
BTR). For
heavy-weight paper, such as 220 g/m
2
or greater, the 2
nd
BTR is where the image is transferred
from the belt to the paper. However, there are times when it is also used with lightweight
paper.
• This feature is accessed from
Machine Status
→
Tools
→
Setup & Adjustment
→
Custom Paper
Settings
. Select the desired
Custom Paper
→
Change Settings
→
Adjust Image
Transfer
→
Change Settings
.
• The
Adjust Image Transfer
procedure can be performed by selecting
Auto
or
Manual
.
Note:
An automatic adjustment fixes most image quality issues. Always perform the
Auto
procedure before performing the
Manual
adjustment.
–
Auto
: The adjustment is done automatically by the press. It eliminates the need for you to
interpret printed targets and manually enter adjustment values. This saves time and
avoids errors.
–
Manual
: The user must manually perform the adjustment, including printing test patterns,
interpreting the printed targets on those patterns, then manually entering the adjustment
values.
Tip:
Use the
Manual
adjustment option only when the
Auto
adjustment does
not provide the desired output.
–
For detailed information and instructions on how to use the
Auto
and
Manual
adjustment
options, refer to the
System Administrator Guide
.
2. If the issue is observed on the tail edge of the printed output and is not corrected by performing a
Adjust Image Transfer
, change the
Adjust Image Transfer for Trail Edge
setting.
• Use this feature to adjust the voltage ratio on the secondary bias transfer roll (2
nd
BTR); this is
where the image is transferred from the belt to the paper.
• This feature is accessed from
Machine Status
→
Tools
→
Setup & Adjustment
→
Custom Paper
Settings
. Select the desired
Custom Paper
→
Change Settings
→
Adjust Image Transfer for
Trail Edge
→
Change Settings
.
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