How to tell a register-only system from a full-defect system

A register-only system shows mainly crosshairs and a deviation number. A full-defect system must also mark dirt, missing print, and a barcode problem outside the register marks.

Two monitors, one of them showing only crosshairs

On a register-only system the monitor is mainly crosshairs and a deviation number. A full-defect system must also point, in the view, to dirt, missing print, and a barcode problem. When you buy, see whether it alarms outside the register marks. If it does not, do not buy it at a full-inspection price or with a full-inspection expectation.

Two monitors, one of them showing only crosshairs

Why it is judged this way

When a supplier says “it has inspection,” that may only be register. Have them put one dirt spot in the middle of the artwork on a sample, and keep the marks in tolerance. If the system does not alarm, it is not a full-defect system. The quote and the acceptance are written from that result.

What to compare

What you see What to call it What not to do
The marks pass, there is dirt in the middle, and there is no alarm This is a register system Write it into a full-inspection acceptance
The place of the dirt is marked It has defect detection Believe the name without a test
There is only one deviation number Do not treat it as having looked at the whole sheet Tell the customer it is full inspection

At job change or when a roll is opened

  1. Prepare a sample with the marks in register and dirt in the middle.
  2. See whether the alarm sits on the dirt.
  3. Name the contract from the test result, not from the sales name.

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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