What to move first when colour drifts on corrugated preprint
When colour drifts on corrugated preprint, use the agreed ΔE and the instrument. Do not judge by the screen. Change only this one thing, then look again in the same place.
When colour drifts on corrugated preprint, use the agreed ΔE and the instrument. Do not judge by the screen. Change only this one thing, then look again in the same place.
Move one thing first
Stop if it is past the agreed tolerance. If there is no written tolerance, hold a sample and do not invent a number. 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. Mottling inside one sheet is not drift that walks with the metres.
Order
| Do this first | Do not yet | Why |
|---|---|---|
| Use the agreed ΔE and the instrument. Do not judge by the screen. | 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 instrument, the condition, the metre mark, and the reading. | Only say you already adjusted it | The next shift cannot pick it up |
Leave this when you are done
- Use the agreed ΔE and the instrument. Do not judge by the screen.
- In the same place, confirm whether the colour drift has eased.
- Write down the instrument, the condition, the metre mark, and the reading.
