What to adjust first when a dot halo shows on a corrugated preprint
When a dot halo shows on a corrugated preprint, reduce pressure first. Do not add ink. Change only this one place. After the change, look again in the same spot. The ring of the dot is dark and the centre is light.
When a dot halo shows on a corrugated preprint, reduce pressure first. Do not add ink. Change only this one place. After the change, look again in the same spot. The ring of the dot is dark and the centre is light.
Move one thing first
Stop if the halo fills the tone and moves it off the signed sample. On a corrugated preprint, if it already hits the barcode or the large product name, stop before you adjust. Do not try it while the job runs. A filled-in screen grows the whole dot and has no clear ring.
Order
| Do first | Do not yet | Why |
|---|---|---|
| Reduce pressure first. Do not add ink. | Change ink, pressure and speed together | Change three things at once and you will not know which one worked |
| It has already landed on the barcode or the large product name | Try it while the job keeps running | Scrap will keep going |
| Note the pressure and which colour. | Only say that you already adjusted it | The next shift cannot pick it up |
Leave this when you are done
- Reduce pressure first. Do not add ink.
- In the same spot, check whether the dot halo has eased.
- Note the pressure and which colour.
