HP Latex 560 User Guide - Page 93

Substrate has shrunk or expanded

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● Disable the automatic cutter. ● Go to the front panel and press , then Substrate handling options > Extra bottom margin and Extra top margin. Set both margins to 100 mm. If that is not enough, try higher values. ● Increase the vacuum level in steps of 10 mmH2O. Do not exceed the following limits: 20 mmH2O for banners and 50 mmH2O for other substrate families. ● Increase the number of passes. ● Make sure that the substrate is stored in the same room in which the printer is located. 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: ● Banner: less than 2% ● Self-adhesive vinyl: less than 0.5% ● Backlit: less than 0.5% ● Paper: less than 0.5% ● PP & PE synthetics: less than 1% The framing problem may be solved by printing a sample and adjusting the size of the image in the RIP. You may reuse this value for all your future prints with the same substrate, although special care must be taken when using banners, as the shrinkage may vary up to 1% depending on the amount of ink used in the print. You can expect the following variations from one print to another: ● Banner: less than 0.3% ● Self-adhesive vinyl: less than 0.1% ● Backlit: less than 0.05% ● Paper: less than 0.1% ● PP & PE synthetics: less than 0.4% To solve the tiling problem and improve the repeatability of the printed size, you are recommended to ensure that the substrate-advance sensor is enabled in the RIP's substrate preset, as this will improve the stability of the prints over time. You are also recommended to tile together areas with similar amounts of ink. If this is not possible, print the areas with different amounts of ink as different jobs and modify the length of the job with less ink in the RIP to match its size with the job with high ink content. Some RIPs may provide a scaling option that allows you to compensate easily for substrate shrinkage or expansion; see your RIP documentation. If you experience tiling issues when using the take-up reel, try loading the take-up reel with the printed side inwards to reduce the deformations, or print without the take-up reel if possible. Another option is to change the tension-bar working force. Some papers are sensitive to front tension. Using the take-up reel with the printed side outside will provide more front tension. Using the take-up reel with the printed side inside will provide less front tension. ENWW Substrate has shrunk or expanded 87

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●
Disable the automatic cutter.
●
Go to the front panel and press
, then
Substrate handling options
>
Extra bottom margin
and
Extra
top margin
. Set both margins to 100 mm. If that is not enough, try higher values.
●
Increase the vacuum level in steps of 10 mmH
2
O. Do not exceed the following limits: 20 mmH
2
O for
banners and 50 mmH
2
O for other substrate families.
●
Increase the number of passes.
●
Make sure that the substrate is stored in the same room in which the printer is located.
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:
●
Banner: less than 2%
●
Self-adhesive vinyl: less than 0.5%
●
Backlit: less than 0.5%
●
Paper: less than 0.5%
●
PP & PE synthetics: less than 1%
The framing problem may be solved by printing a sample and adjusting the size of the image in the RIP. You may
reuse this value for all your future prints with the same substrate, although special care must be taken when
using banners, as the shrinkage may vary up to 1% depending on the amount of ink used in the print.
You can expect the following variations from one print to another:
●
Banner: less than 0.3%
●
Self-adhesive vinyl: less than 0.1%
●
Backlit: less than 0.05%
●
Paper: less than 0.1%
●
PP & PE synthetics: less than 0.4%
To solve the tiling problem and improve the repeatability of the printed size, you are recommended to ensure
that the substrate-advance sensor is enabled in the RIP's substrate preset, as this will improve the stability of the
prints over time. You are also recommended to tile together areas with similar amounts of ink. If this is not
possible, print the areas with different amounts of ink as different jobs and modify the length of the job with less
ink in the RIP to match its size with the job with high ink content.
Some RIPs may provide a scaling option that allows you to compensate easily for substrate shrinkage or
expansion; see your RIP documentation.
If you experience tiling issues when using the take-up reel, try loading the take-up reel with the printed side
inwards to reduce the deformations, or print without the take-up reel if possible.
Another option is to change the tension-bar working force. Some papers are sensitive to front tension. Using the
take-up reel with the printed side outside will provide more front tension. Using the take-up reel with the printed
side inside will provide less front tension.
ENWW
Substrate has shrunk or expanded
87