Preparing for a job
Operation Instructions Rockhopper Printer
Page
58
AP-75024 Rev. 1.2. – 18/08/2002
MICRO-BANDING ELIMINATION.
The nominal paper movement accuracy is
±
0.1 percent, or
±
1 mm per meter of moving
distance. Different media types may show different behavior and when the paper
movement error exceeds the target specification, banding can occur. This banding can
take the form of thin dark horizontal bands, or thin white horizontal bands.
If the above happens, these bands will occur in both bi-directional and unidirectional print
modes. Thin dark bands indicate that the printer firmware is under-compensating and that
print swaths are overlapping on the edges. Alternatively, thin white lines indicate that the
printer firmware is over-compensating, and that print swaths are not perfectly butted
together.
The media feed micro step adjustment option gives the user the ability to steer the step
compensation algorithm. To eliminate micro-banding, you can enter a positive or negative
percentage of compensation, (
±
3.00 percent), in 0.01 percent increments.
A positive value will extend the step and compensate for overlapping print swaths; a
negative value will shorten the step and compensate for non-butting print swaths. Some
trial and error testing is typically required to find the optimum value for any given media
type.
Plot OK
Step 1 :
To enter the Menu system, press the
[MENU]
key.
* Menu * Command >
Step 2 :
The key contents change to the yellow
section on the outside of the control panel.
Bring up the “Function” menu by pressing
the
[Menu up]
key or
[Menu Down]
key.