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.
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.

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