What a corrugated preprint still has to catch
A corrugated preprint still has to catch the barcode, a wrong large product name, and a whole missing print block. Flute texture is not dirt. The board is wide, so the camera first covers the barcode and the product-name area.
A corrugated preprint still has to catch the barcode, a wrong large product name, and a whole missing print block. Flute texture is not dirt. The board is wide, so the camera first covers the barcode and the product-name area. Do not lock the whole sheet because of the texture.
Why it is judged this way
After preprint, the board is corrugated and shows a regular flute. Full-sheet high sensitivity will stop without end. Draw the barcode and the product name tight. A large background follows the customer's dirt table and can be looser. A whole missing color still has to alarm.
What to compare
| What you see | What to call it | What not to do |
|---|---|---|
| Barcode or product name is damaged | Stop | Call it flute |
| Regular flute | Do not call it dirt | Tighten the whole sheet |
| A whole color is missing | Stop | Turn inspection off because there is a lot of texture |
At job change or when a roll is opened
- Mark the barcode and the product-name area.
- Use a sample with a missing print block and confirm the alarm.
- Confirm the flute does not false-alarm in a run.
