Machine Description
Operating Instructions
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Subject to Technical Modifications
ITS6_135_Manual_EN.doc
4.6.17.2 Correct operation of the pre-curing unit
Operating the pre-curing unit involves the risk of light being emitted by its
LEDs, which can be partially reflected and slowly harden the film of ink on
the underside of the print heads. This would cause the nozzle plates to be-
come clogged over time and the print heads, costing several thousand Eu-
ros each, would have to be replaced
– damage that is not covered by any
warranty and, therefore, always has to be covered by the owner of the sys-
tem!
Notice
Prevent any damage to the print heads!
Only use the pre-curing unit when absolutely necessary, namely:
The edges of the inks run into each other and mix in areas
where inks of different color are directly adjacent to one anoth-
er.
The printing substrate is very smooth so that the drops of ink
could roll off or fail to merge into solid patches of color.
Make sure that the pre-curing unit is operated at the lowest possi-
ble power level.
Make sure that all print heads undergo a standard or intensive
cleaning at least every two hours.
Notice
If thin, white lines appear lengthwise in the prints, then
Stop the printing process immediately and have all print heads un-
dergo a standard or intensive cleaning.
Keep repeating these procedures until all of the print heads are
clean again. See Chap.10.7.5.1, "Mechanical cleaning of the noz-
zles"
Extremely dirty print heads might also need to be cleaned by hand.
See Chap.10.7.5.2, "Manual cleaning of the print heads".
In order to prompt the operator to print without the pre-curing wherever
possible, this unit is deactivated automatically by the controls whenever a
new image file is loaded. If pre-curing is nevertheless required for the next
print job, then the operator must re-activate it after loading the image file
using the tab
Job > UV Curing
.
On the other hand, if the required format file is not loaded until after the im-
age file, the settings saved in the format file would override in this case: If it
provides for printing with a pre-curing unit, then the latter would in fact be
switched on by the controls and not be deactivated automatically.