HP Latex 3000 Printer - Manual (Page 269)

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.
● If you need to print on a substrate susceptible to expansion:
◦ Ensure that the density of ink is similar between each tile (if not, the tile with less ink might
be shorter).
◦ If possible, decrease the heating temperature.
◦ Reduce the ink restrictions as much as possible.
● Make sure that the roll is left within the room where the printer is located for at least 24 hours,
this is to ensure the complete roll has the same temperature as the printer.
2. Do not touch the print adjustments (no change of substrate advance compensation) between tiles.
3. Print all the tiles at once.
● Do not split the jobs at different times (1 tile one day, and the 2nd tile the 2nd day)
● Do not change the print mode or the substrate width between tiles.
To print the tiles all at once, we recommend the following:
a. Create the tiles from the Internal Print Server.
b. If you are creating the tiles from the RIP, ensure that you send all the tiles within the same jobs
sent to the printer/Internal Print Server.
The objective is to make sure that there is no pause between the tiles. When using the Queue mode in
the Internal Print Server, there is still a small time between jobs, which could add more variability
between the lengths of the tiles.
4. In order to make sure that even the first tile has less difference in length compared with the other ones,
add a top margin of 50 cm.
In case you have to reprint one tile, in order to ensure the length will be as close as the previous jobs:
● Make sure that the substrate and also the ambient temperature of the printer are the same as
when the previous job was printed.
● Add a top margin of 50 cm.
But in any case, when having to reprint a tile later, there is a higher probability that the length will be
different from the other tile length. The total length repeatability depends on the substrate, the
changes in environmental conditions, and the contents of each job (mainly when the substrate is
reacting differently depending on the ink density).
Collector issues
The collector stops winding
The collector has a safety timer that will stop rewinding substrate if it is not fully collected after 30 seconds,
and will stop unwinding substrate after 5 seconds if the substrate loop is not detected by the collector
sensor. If you have a lot of substrate to be collected lying on the floor, you will have to restart the collector
by clicking the corresponding icon.
ENWW Collector issues 263