When to stop for picking on corrugated preprint
On corrugated preprint, stop if picking tears the sheet surface. Light linting follows the sample. If it hits a barcode or the large product name, that sheet cannot go. The solid edge lifts paper fiber and shows a white edge.
On corrugated preprint, stop if picking tears the sheet surface. Light linting follows the sample. If it hits a barcode or the large product name, that sheet cannot go. The solid edge lifts paper fiber and shows a white edge.

First see whether it hits a critical spot
The solid edge lifts paper fiber and shows a white edge. A void is ink that never landed. The sheet surface is still whole. On corrugated preprint, the critical spot is the barcode or the large product name. If the decoration has no hickey chart, do not invent a millimetre number on the spot.
Side by side
| What you see | Call | Do not |
|---|---|---|
| The solid edge lifts paper fiber and shows a white edge. | Stop if the sheet surface is torn. Light linting follows the sample. | Add ink or add impression just because you see it |
| It lands on a barcode or the large product name | This one cannot go | Wait for a later station to find it |
| Only on the decoration, and there is no hickey chart | Keep a sample and confirm | Write your own millimetre number |
Do this on this turn
- Confirm it is picking: The solid edge lifts paper fiber and shows a white edge.
- Drop viscosity and pressure first. Do not add ink.
- Log the paper batch, the viscosity, and the pressure.