Domino G20I - Print Quality Issues

FAULT FINDING
4-4 EPT024619 Issue 1 June 2016
PRINT QUALITY FAULTS
Use the table below to diagnose and solve print quality faults.
Problem Example Action
Print face too far
away from the
substrate.
Lower the print head
until print quality is
acceptable.
Print face
touching the
substrate.
Raise the print head
until the print quality is
acceptable.
Print face at an
angle.
Ensure the rows of
print nozzles are
parallel with the
leading edge of the
substrate.
Print nozzles
parallel with
movement of
substrate.
Ensure the print
nozzles are
perpendicular to the
product movement.
Print face
nozzles have
become
blocked.
Wipe print face or
perform a purge. If the
nozzles do not unblock
replace the ink
cartridge.
Print becomes
blurred over the
top or bottom of
the text.
Print nozzles are
perpendicular to
product movement,
however the print face
is not parallel to the
substrate.
Encoder is
slipping, or
internal speed
setting is wrong.
Check the encoder
installation.
Check the speed
setting.
Print too faint.
Increase the print
resolution or print
density.
Print too dark/
too much ink on
substrate or ink
consumption too
high.
Decrease the print
resolution or print
density.