How to tell a gear mark from lookalikes on a pharma label

On a pharma label, split a gear mark from lookalikes: a doctor-blade line does not repeat on the tooth pitch. It is one long line. Until you can tell them apart, do not adjust the press for the wrong cause. Light and dark bands repeat at a fixed tooth pitch.

Gear mark on a pharma label

On a pharma label, split a gear mark from lookalikes: a doctor-blade line does not repeat on the tooth pitch. It is one long line. Until you can tell them apart, do not adjust the press for the wrong cause. Light and dark bands repeat at a fixed tooth pitch.

Gear mark on a pharma label

Name it wrong and you adjust the wrong place

Light and dark bands repeat at a fixed tooth pitch. If you call it something else, you skip this step: match the tooth pitch first. Do not change the doctor blade first. Legal type and the barcode decide release. They do not decide what it is called.

How to tell them apart

What you see Closer to How to separate
Light and dark bands repeat at a fixed tooth pitch. Gear mark Do not name it from one white spot
A doctor-blade line does not repeat on the tooth pitch. It is one long line. Handle it as that other defect Do not use the same adjustment
It sits on the legal type and the barcode Protect this area first Do not ignore the location just to name it

Confirm on the spot

  1. Look, or use a loupe: bands repeat at a fixed tooth pitch.
  2. Rule it out: a doctor-blade line is one long line, not a tooth-pitch repeat.
  3. Match the tooth pitch first. Do not change the doctor blade first.

Related reading

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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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