Leibinger JET3 Series Operating Manual page 386

Page 384
If an „internal clock" (internal encoder) is used, there will appear deviations in the print
width if the speed of the product would vary!
Slower speed as the
original adjustment:
Therefore we recommend always using an encoder to ensure an accurate and stable
Resolution:
The precise the resolution of the encoder (amount of impulses per revolution), the precise and
in finer steps the position of the printout can be adjusted.
Besides print-width regulation of the printer is also depending about the resolution of the
encoder. If the resolution of the encoder signal would be too small there are just „gradually"
and no finer adjustments possible.
Example:
If an encoder is used with 5000Imp/r and a measurement wheel with a circumference of
200mm, the following resolution will be achieved:
5000 Impulses: 200mm =
Generally the resolution should have at least 10 pulses/mm to achieve a good
precision and fine adjustment of all print parameters!
Higher resolutions as 50 impulses/mm will not bring any advantages or a higher
accurate precision of the printer!
Release 2.02
Appendix - Encoder Guidelines
Original print adjustment of the „print width":
print width even at varying speeds!
faster speed as the
original adjustment:
25 Impulses/mm
Group 12
JET3 Series