How to tell fill-in from lookalikes on corrugated preprint

On corrugated preprint, split fill-in from lookalikes: when register is off, the type is still clear, only shifted. Until you can tell them apart, do not adjust the press for the wrong cause. Fine type gets heavier, reverse type shrinks or plugs.

Fill-in on corrugated preprint

On corrugated preprint, split fill-in from lookalikes: when register is off, the type is still clear, only shifted. Until you can tell them apart, do not adjust the press for the wrong cause. Fine type gets heavier, reverse type shrinks or plugs.

Fill-in on corrugated preprint

Name it wrong and you adjust the wrong place

Fine type gets heavier, reverse type shrinks or plugs. If you call it something else, you skip this step: reduce ink or impression first. Do not hide it by raising the screen ruling. The barcode and the product name decide release. They do not decide what it is called.

How to tell them apart

What you see Closer to How to separate
Fine type gets heavier, reverse type shrinks or plugs. Fill-in Do not name it from one white spot
When register is off, the type is still clear, only shifted. Handle it as that other defect Do not use the same adjustment
It sits on the barcode and the product name Protect this area first Do not ignore the location just to name it

Confirm on the spot

  1. Look, or use a loupe: fine type heavier, reverse type smaller or plugged.
  2. Rule it out: when register is off, the type is still clear, only shifted.
  3. Reduce ink or impression first. Do not hide it by raising the screen ruling.

Related reading

Written by

Editorial Team

Print quality & inspection specialists

We write about print quality inspection from the production floor: defects we have seen, standards we work against and equipment we have evaluated.

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