HP Stitch S1000 User Guide - Page 229

There are physical marks on the substrate, Print length issues, The print is shorter than expected

Page 229 highlights

There are physical marks on the substrate This only can occur when substrates sensitive to permanent deformation are used. These marks are usually seen in isolated areas and mainly caused by substrate tension. Here are some suggested ways to correct the problem: 1. Check that the substrate you are using is the same type as the one you have selected in the Internal Print Server. 2. Check that you are using the generic substrate preset for the substrate category. The use of incorrect values could cause incorrect substrate behavior. 3. Reload the substrate and try to minimize skew while loading. Check that you are loading the substrate using the correct procedure. 4. Start with the recommended configuration for each substrate, and reduce vacuum and tension step by step, in steps of 5 mmH2O for vacuum and 5 N·m for tension. There are drops of ink on the substrate NOTE: In the above example, the distance between the drops is about 1 cm (0.4 in). 1. If you are using the substrate edge holders, clean them. 2. Clean the sides of the printheads and the sides of the printhead slots. 3. Clean the electrical connections to the printheads. See The Internal Print Server recommends replacing or reseating a printhead on page 235. Print length issues The print is shorter than expected Some substrates naturally contract when they are printed on and cured, this can mean the total length of the print is shorter than expected. If this is the case, you can expand the length of the print from the RIP, which will compensate for the contraction of the substrate. Alternatively, change to a less thermal-dependent substrate to reduce the contraction. How to achieve better consistency between jobs of the same length The printer has been designed to maximize consistency in the length of the printed substrate. However, there are external variables that can contribute to variability: substrate variations and enviromental conditions. 1. Select a substrate which is less susceptible to expansion when being printed on. Most paper-based substrates have a tendency to expand. ENWW Print length issues 223

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There are physical marks on the substrate
This only can occur when substrates sensitive to permanent deformation are used. These marks are usually seen
in isolated areas and mainly caused by substrate tension.
Here are some suggested ways to correct the problem:
1.
Check that the substrate you are using is the same type as the one you have selected in the Internal Print
Server.
2.
Check that you are using the generic substrate preset for the substrate category. The use of incorrect
values could cause incorrect substrate behavior.
3.
Reload the substrate and try to minimize skew while loading. Check that you are loading the substrate
using the correct procedure.
4.
Start with the recommended configuration for each substrate, and reduce vacuum and tension step by
step, in steps of 5 mmH
2
O for vacuum and 5 N·m for tension.
There are drops of ink on the substrate
NOTE:
In the above example, the distance between the drops is about 1 cm (0.4 in).
1.
If you are using the substrate edge holders, clean them.
2.
Clean the sides of the printheads and the sides of the printhead slots.
3.
Clean the electrical connections to the printheads. See
The Internal Print Server recommends replacing or
reseating a printhead
on page
235
.
Print length issues
The print is shorter than expected
Some substrates naturally contract when they are printed on and cured, this can mean the total length of the
print is shorter than expected. If this is the case, you can expand the length of the print from the RIP, which will
compensate for the contraction of the substrate. Alternatively, change to a less thermal-dependent substrate to
reduce the contraction.
How to achieve better consistency between jobs of the same length
The printer has been designed to maximize consistency in the length of the printed substrate. However, there are
external variables that can contribute to variability: substrate variations and enviromental conditions.
1.
Select a substrate which is less susceptible to expansion when being printed on. Most paper-based
substrates have a tendency to expand.
ENWW
Print length issues
223