HP Scitex LX850 HP Scitex LX850 & LX820 Printers: Maintenance and troubles - Page 62

There are ink marks on the substrate, LX850, LX850 only

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Substrate issues 9. Consider changing the printer configuration. For the LX850 use the roll-to-free-fall configuration as it is least prone to wrinkles. 10. If you cannot get rid of the wrinkles, try raising the carriage beam slightly, so that the printhead is not so close to the substrate. For information on how to adjust printer settings, see the User's Guide. There are ink marks on the substrate This problem can be caused by the carriage touching the substrate and smearing the ink. 1. If the ink marks occur at the sides of the substrate and not in the center, check that the substrate edge holders are correctly placed and clean. See Clean the substrate edge holders on page 34. 2. Check that the vacuum and tension levels are correct (see the User's guide). 3. LX850 only: If printing on porous substrates, using the ink collector kit, check that the ink collector foams are not full of ink. If the substrate is not kept under sufficient tension, it may touch the foams. 4. LX850 only: If you are printing in the roll-to-free-fall configuration and you see diagonal smears of ink, the substrate may have been badly loaded; or the tension roller may be causing wrinkles in the substrate. In the latter case, you can try using the tension roller knob to reduce the pressure that the roller exerts on the substrate, as shown below. To restore the tension roller pressure to normal, pull the knob and turn it as shown below. 56 Chapter 6 Troubleshoot substrate issues ENWW

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9.
Consider changing the printer configuration. For the
LX850
use the roll-to-free-fall configuration
as it is least prone to wrinkles.
10.
If you cannot get rid of the wrinkles, try raising the carriage beam slightly, so that the printhead is
not so close to the substrate.
For information on how to adjust printer settings, see the
User's Guide
.
There are ink marks on the substrate
This problem can be caused by the carriage touching the substrate and smearing the ink.
1.
If the ink marks occur at the sides of the substrate and not in the center, check that the substrate
edge holders are correctly placed and clean. See
Clean the substrate edge holders
on page
34
.
2.
Check that the vacuum and tension levels are correct (see the
User's guide
).
3.
LX850 only:
If printing on porous substrates, using the ink collector kit, check that the ink
collector foams are not full of ink. If the substrate is not kept under sufficient tension, it may touch
the foams.
4.
LX850 only:
If you are printing in the roll-to-free-fall configuration and you see diagonal smears
of ink, the substrate may have been badly loaded; or the tension roller may be causing wrinkles in
the substrate. In the latter case, you can try using the tension roller knob to reduce the pressure
that the roller exerts on the substrate, as shown below.
To restore the tension roller pressure to normal, pull the knob and turn it as shown below.
56
Chapter 6
Troubleshoot substrate issues
ENWW
Substrate issues