When mottling shows on a food web, what do you move first

Look at the next repeat and see if the position moves. If it moves, it is the stock. If it stays, it is ink or water. Change only one thing. Write down the stock lot, the water, and which colour.

Mottling on a food web

When mottling shows on a food web, look at the next repeat and see if the position moves. If it moves, it is the stock. If it stays, it is ink or water. Change only this one thing, then look again in the same place.

Mottling on a food web

Move one thing first

Stop if a brand-colour solid mottles past the approved sample. If there is no sample, keep one and ask. On a food web, if it already hits the ingredient list, the allergen statement, or the barcode, stop before you adjust. Do not try it while the press is running. Ink starvation lightens the whole plate together. It is not patchy.

Order

Do first Not yet Why
Look at the next repeat and see if the position moves. If it moves, it is the stock. If it stays, it is ink or water. Change ink, impression, and speed together Change three things and you will not know which one worked
It already landed on the ingredient list, the allergen statement, or the barcode Try it while production is running Scrap keeps moving
Write down the stock lot, the water setting, and which colour. Only say that you already adjusted it The next shift cannot pick it up

Leave this when you are done

  1. Look at the next repeat and see if the position moves. If it moves, it is the stock. If it stays, it is ink or water.
  2. In the same place, confirm whether the mottling has eased.
  3. Write down the stock lot, the water setting, and which colour.

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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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