How to split a water spot on corrugated preprint from a lookalike
On corrugated preprint, split a water spot this way: ink starvation does not have that watermark ring. Until you can tell them apart, do not adjust the press for the wrong cause. A local ring mark, with mottling inside.
On corrugated preprint, split a water spot this way: ink starvation does not have that watermark ring. Until you can tell them apart, do not adjust the press for the wrong cause. A local ring mark, with mottling inside.
Name it wrong and you adjust the wrong place
A local ring mark, with mottling inside. Call it something else and you skip this step: check the water rollers and the water circuit. Do not add ink. The barcode and the product name decide whether it can go. They do not decide what you call it.
How to split them
| What you see | Closer to | How you split them |
|---|---|---|
| A local ring mark, with mottling inside. | a water spot | Naming it off a single white spot |
| Ink starvation does not have that watermark ring. | Treat it as that other defect | Using the same adjustment |
| It sits on the barcode and the product name | Hold this area first | Ignoring the position just to give it a name |
Confirm it on the spot
- Look, by eye or with a loupe: A local ring mark, with mottling inside.
- Rule out: Ink starvation does not have that watermark ring.
- Check the water rollers and the water circuit. Do not add ink.
