How to tell doubling apart on a corrugated preprint
Misregister is one color sitting off another. Doubling is two dots of the same color. The wrong name sends the adjustment to the wrong place. Check pressure and the blanket first. Do not only turn the register.
On a corrugated preprint, tell doubling apart like this: misregister is one color sitting off another, and doubling is two dots of the same color. Until they are apart, do not adjust the press for the wrong cause.
The wrong name sends the adjustment to the wrong place
There is a faint second dot beside the dot. If you treat that as another defect, you skip this step: check pressure and the blanket first, and do not only turn the register. The barcode and the product name decide whether it can go, but they do not decide what the defect is called.
How to separate them
| What you see | Closer to | Do not separate them like this |
|---|---|---|
| A faint second dot sits beside the dot | Doubling | Name it from one white spot |
| Misregister is one color off another. Doubling is two dots of the same color | Handle it as that other defect | Use the same adjustment |
| The place is the barcode and the product name | Keep this place safe first | Ignore the place in order to name it |
Look at it on the spot
- Look with the eye or a loupe: a faint second dot sits beside the dot.
- Rule out misregister: that is one color off another. Doubling is two dots of the same color.
- Check pressure and the blanket first. Do not only turn the register.
