Our partner in Ireland
Why and how
What’s the difference?
- Designed to capture barcode data content.
- Forward the decoded data to a system being used in
a certain application.
a Point Of Sale cash register.
a baggage handling system.
various sorts of logistic environments.
A variety of scanners
A variety of scanners
What’s a Barcode Verifier?
- It is a measuring or quality inspection device.
- Examines, analyses and reports the quality, and
therefore scanability of the (printed) barcode.
- It is not a scanner.
Verifiers are about standards
- It compares the results of the measurements against
international industry standards and specifications.
- The ISO/IEC standard for print quality of linear codes
is 15416. For 2D Matrix codes it is 15415.
- The most well known application standard is the one
-Oh, and a verifier is NOT a scanner.
Grading your barcode
- A verifier grades the barcode for quality.
- Grade A(4), B(3), C(2), D(1) or F(0).
- For most applications (such as the GS1 standard) a
grade 2.5 or higher is acceptable.
Did I tell you a verifier is NOT a scanner?
- Verification makes sure that the printed barcode will
be read by the scanners in the various applications, by
various scanners in various places.
- If not, it can e.g. kill automated logistic processes.
- Non readable barcodes will cause loss of time, loads
of extra costs, goodwill, lost luggage, headaches, etc.
What can go wrong?
- Wrong data encoded
- Too little contrast
- Bars (and/or spaces) too wide or too narrow
- Insufficient light margins/quiet zones
- Defects caused by e.g. dust in print heads, wrinkled
ribbons, blocked (inkjet) nozzles etc. etc.
- Barcode is too small or too large (magnification)
- Code is truncated
What can go wrong 2?
- Missing (or split) bars because of faulty print heads
- Using transparent substrates (plastic/glass)
- Placing barcodes too close to vertical corners or
even wrapping around corners.
- Barcodes on film distorted because of shrink wrap
- Using uncovered metal surfaces as a background for
the bars of a symbol
- Messing up the rules for using Application Identifiers
in GS1-128 for traded unit symbols
- A verifier analyses the problem area (if any) and
gives the user information how to correct the mistake
and/or improve the quality in order to achieve a
How to verify
- The scan reflectance profile (SRP)
Parameters of quality
Minimum Edge Contrast
A typical grading according to 15416
- Where 2.8 (or B) is the achieved grade.
-‘06’ is for 6 mil/150 microns. The size of the aperture
applied for the measurement.
- ‘660’ is for 660 nanometers, the wavelength of the
light source being used to illuminate the barcode.
- All codes are verified
- All results can be stored and kept as proof of ISO
- Will usually also do data content checking (AI check,
sequential numbering etc.)
- In-line verification requires a fixed distance from
verifier to barcode within small tolerances.
- It also requires a fixed angle of illumination to
comply with ISO/IEC standards
- Requires stable web printing
- Mind your speed!
- Barcode orientation is important
- What action should be taken when faulty barcodes
- Can the printer/system be paused by an external