What to move first when scumming shows on corrugated preprint
When scumming shows on corrugated preprint, check ink and water balance first. Do not raise the pressure. Change only this one thing, then look again in the same place. There is a light film of ink where there should be none.
When scumming shows on corrugated preprint, check ink and water balance first. Do not raise the pressure. Change only this one thing, then look again in the same place. There is a light film of ink where there should be none.
Move one thing first
Stop if readable false type shows in the blank, or if the scum reaches a barcode. On corrugated preprint, if it has already hit a barcode or the large product name, stop first and then adjust. Do not try it while you keep printing. Fill-in thickens the image. Scumming sits in the blank.
Order
| Do this first | Do not yet | Why |
|---|---|---|
| Check ink and water balance first. Do not raise the pressure. | Change ink, pressure, and speed together | Change three things at once and you will not know which one worked |
| It has already landed on a barcode or the large product name | Keep running while you try | Scrap keeps moving |
| Write down the water and the ink of which colour. | Only say you already adjusted it | The next shift cannot pick it up |
Leave this when you are done
- Check ink and water balance first. Do not raise the pressure.
- In the same place, confirm whether the scumming has eased.
- Write down the water and the ink of which colour.
