They may also be caused by not enough vacuum suction in the printing zone. If you decide to increase the
suction, do not exceed the following limits: 20 mmH
2
O for banners, 35 mmH
2
O for vinyl, and 50 mmH
2
O for
other substrate families.
If you experience jams only at the beginning of a print, try the following suggestions.
●
Disable the automatic cutter.
●
Go to the front panel and select the
icon, then Substrate handling options > Extra bottom margin.
Set the margin to 100 mm. If that is not enough, try 150 or 200 mm. This extra margin will apply only to
jobs that start printing when the printer is idle and when the cutter is disabled.
●
Increase the vacuum level in steps of 10 mmH
2
O. Do not exceed the following limits: 20 mmH
2
O for
banners, 35 mmH
2
O for vinyl, and 50 mmH
2
O for other substrate families.
●
Decrease the warm-up drying temperature in steps of 5°C.
●
Decrease the warm-up curing temperature in steps of 5°C.
●
Increase the number of passes.
●
Make sure that the substrate is stored in the same room in which the printer is located.
The substrate is deformed or wrinkled
If your substrate is deformed or wrinkled by the drying and curing process, change the temperature settings
before printing the next job, and advance the substrate, using the Move Substrate key on the front panel, so
that the next job will be printed on undamaged substrate.
If the problem appears only at the beginning of the print, try the following suggestions.
●
Disable the automatic cutter.
●
Go to the front panel and select the
icon, then Substrate handling options > Extra bottom margin.
Set the margin to 100 mm. If that is not enough, try 150 or 200 mm. This extra margin will apply only to
jobs that start printing when the printer is idle and when the cutter is disabled.
●
Increase the vacuum level in steps of 10 mmH
2
O. Do not exceed the following limits: 20 mmH
2
O for
banners, 35 mmH
2
O for vinyl, and 50 mmH
2
O for other substrate families.
●
Decrease the warm-up drying temperature in steps of 5°C.
●
Decrease the warm-up curing temperature in steps of 5°C.
●
Increase the number of passes.
●
Make sure that the substrate is stored in the same room in which the printer is located.
The substrate has shrunk or expanded
During the printing process, some substrates may shrink, while others may expand. If this happens, the
dimensions of the print will not be correct.
As a general rule, you can expect the following percentages of shrinkage:
●
Photorealistic: less than 0.4%
●
Paper-solvent, Paper-aqueous: less than 0.5%
●
Self-adhesive: less than 1.2%
●
Banner: less than 3% shrinkage (if you disable the substrate-advance sensor, less than 7%)
66 Chapter 7 Troubleshoot substrate issues ENWW
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