What to inspect on a tag printed on both sides

A tag printed on both sides needs the front, the back, and a check that both sides are the same job. Inspecting only one side can leave the previous job's old version on the back.

The front and back of a tag

A tag printed on both sides needs the front, the back, and a check that both sides are the same job. Inspecting only one side can leave the previous job's old version on the back. Both sides need a template, and the record has to say both sides were seen.

The front and back of a tag

Why it is judged this way

Two-sided printing is often one side, then a turn. If the inspection after the turn still uses the front template, everything is wrong. Use a template for each side, and look for a mark that exists on only one side, so the two sides are not printed as the same face.

What to compare

What you see What to call it What not to do
The back is an old version or blank Stop Release it because the front looks fine
Both sides are printed as the same face Stop Do only one inspection
Front and back are both right Keep a record for both sides Write only one pass

At job change or when a roll is opened

  1. Build a template for the front and one for the back.
  2. Place a sample with a blank back and confirm the alarm.
  3. The delivery record says both sides were inspected.

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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