An inkjet adhesion promoter for materials that UV ink does not hold on to by itself. Applied digitally, in line with the printed image, so it goes only where it is needed.
Some production materials give UV ink nothing to hold on to. Primer goes down first, and the ink lands on it instead of on the bare surface.
The primer goes through the printer the way the ink does.
No separate coating step
It runs in line with the printed image, on the machine already printing the job.
Only where the ink goes
Laid down under the printed area rather than over the whole sheet. The rest of the material stays as it came.