How the camera sees an anilox line on corrugated preprint
To see an anilox line on corrugated preprint, you need enough length to tell whether it is a straight line. If you cannot see it, change the light or the resolution first. Do not loosen the threshold first.
To see an anilox line on corrugated preprint, you need enough length to tell whether it is a straight line. If you cannot see it, change the light or the resolution first. Do not loosen the threshold first.
Fix the optics first
A fine line tied to the anilox. It is still there after a roll change. If the picture cannot separate it, loosening the threshold only paints the barcode and the product name red. You need enough length to tell whether it is a straight line.
Optics
| Need | Enough | Not enough |
|---|---|---|
| You need enough length to tell whether it is a straight line. | A fine line tied to the anilox. It is still there after a roll change. | Only a blurred circle left |
| About 3 pixels across | It stays | It comes and goes, and you still write that it can be caught |
| the barcode and the product name in the field of view | The critical place is seen | Only the decorative edge is lit |
Try it on a sample
- Confirm the picture can separate it: A fine line tied to the anilox. It is still there after a roll change.
- Count about how many pixels it covers.
- If you cannot see it, change the light or the focus. Do not change the threshold.
