When to stop for mottling on corrugated preprint
On corrugated preprint, stop if a brand-colour solid mottles past the sample. With no sample, hold one and ask. If it hits a barcode or the large product name, that sheet cannot ship. The solid is patchy, dark and light, like cloud.
On corrugated preprint, stop if a brand-colour solid mottles past the sample. With no sample, hold one and ask. If it hits a barcode or the large product name, that sheet cannot ship. The solid is patchy, dark and light, like cloud.
Check the critical spots first
The solid is patchy, dark and light, like cloud. Ink starvation makes the whole form lighter together. It is not patch by patch. On corrugated preprint the critical spots are the barcode and the large product name. If the decorative area has no hickey chart, do not invent a millimetre limit on the spot.
Check
| What you see | Call | Do not |
|---|---|---|
| The solid is patchy, dark and light, like cloud. | Stop if a brand-colour solid mottles past the sample. With no sample, hold one and ask. | Add ink or pressure just because you saw it |
| It lands on a barcode or the large product name | That sheet cannot ship | Wait for the next process to find it |
| Only on decoration, and there is no hickey chart | Hold a sample and confirm | Write your own millimetre limit |
Do this on this run
- Confirm it is mottling: the solid is patchy, dark and light, like cloud.
- Change a sheet and see if the position moves. If it moves, it is the paper. If it stays, it is ink or water.
- Write down the paper lot, the water, and which colour.
