Axicon Auto ID Ltd.
William van Benthum

www.axicon.com
Greetings from the Netherlands

www.axicon.com
Holfeld Graphics
Rory Connaughton
Our partner in Ireland

www.axicon.com
Barcode Verification
Why and how

www.axicon.com
What’s the difference?

Barcode scanners
vs.
Barcode verifiers

www.axicon.com
Barcode scanners
- Designed to capture barcode data content.
- Forward the decoded data to a system being used in
a certai...
A variety of scanners
Hand held

Fixed

www.axicon.com
A variety of scanners
Hand held

Fixed

www.axicon.com
What’s a Barcode Verifier?

- It is a measuring or quality inspection device.
- Examines, analyses and reports the quality...
Verifiers are about standards
- It compares the results of the measurements against
international industry standards and s...
Grading your barcode
- A verifier grades the barcode for quality.
- Grade A(4), B(3), C(2), D(1) or F(0).
- For most appli...
Why verify?
- Verification makes sure that the printed barcode will
be read by the scanners in the various applications, b...
Who verifies?
- Designers, Printers, Packaging.
- Manufacturers (food, non-food, pharmaceutical,
automotive, aerospace etc...
What can go wrong?
- Wrong data encoded
- Too little contrast
- Bars (and/or spaces) too wide or too narrow
- Insufficient...
What can go wrong 2?
- Missing (or split) bars because of faulty print heads
- Using transparent substrates (plastic/glass...
Analysis
- A verifier analyses the problem area (if any) and
gives the user information how to correct the mistake
and/or ...
How to verify
- The scan reflectance profile (SRP)

www.axicon.com
Parameters of quality
-

Edge Determination
Minimum Reflectance
Symbol Contrast
Minimum Edge Contrast
Modulation
Defects
D...
A typical grading according to 15416

2.8/06/660
- Where 2.8 (or B) is the achieved grade.
-‘06’ is for 6 mil/150 microns....
Are you still with me?

www.axicon.com
Types of verification
- linear
- 2D
- all-in-one
- PC system
- Portable system
- off-line (>95%)
- in-line

www.axicon.com
What does it look like

www.axicon.com
What does it look like 2

www.axicon.com
In-Line verification
- All codes are verified
- All results can be stored and kept as proof of ISO
compliance
- Will usual...
However…

- In-line verification requires a fixed distance from
verifier to barcode within small tolerances.
- It also req...
In-Line verification
- Requires stable web printing
- Mind your speed!
- Barcode orientation is important
- What action sh...
Thank you!

www.axicon.com
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Barcode Verification - how and why?

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William van Benthum from Axicon Auto ID Ltd gives an overview of barcode verification

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Barcode Verification - how and why?

  1. 1. Axicon Auto ID Ltd. William van Benthum www.axicon.com
  2. 2. Greetings from the Netherlands www.axicon.com
  3. 3. Holfeld Graphics Rory Connaughton Our partner in Ireland www.axicon.com
  4. 4. Barcode Verification Why and how www.axicon.com
  5. 5. What’s the difference? Barcode scanners vs. Barcode verifiers www.axicon.com
  6. 6. Barcode scanners - Designed to capture barcode data content. - Forward the decoded data to a system being used in a certain application. - Such as… a Point Of Sale cash register. a baggage handling system. various sorts of logistic environments. www.axicon.com
  7. 7. A variety of scanners Hand held Fixed www.axicon.com
  8. 8. A variety of scanners Hand held Fixed www.axicon.com
  9. 9. 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. www.axicon.com
  10. 10. 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 from GS1. -Oh, and a verifier is NOT a scanner. www.axicon.com
  11. 11. 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? www.axicon.com
  12. 12. Why verify? - 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. etc. www.axicon.com
  13. 13. Who verifies? - Designers, Printers, Packaging. - Manufacturers (food, non-food, pharmaceutical, automotive, aerospace etc. etc.) - Publishers - Retail www.axicon.com
  14. 14. 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 www.axicon.com
  15. 15. 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 www.axicon.com
  16. 16. Analysis - 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 better grade. www.axicon.com
  17. 17. How to verify - The scan reflectance profile (SRP) www.axicon.com
  18. 18. Parameters of quality - Edge Determination Minimum Reflectance Symbol Contrast Minimum Edge Contrast Modulation Defects Decode Decodability www.axicon.com
  19. 19. A typical grading according to 15416 2.8/06/660 - 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. www.axicon.com
  20. 20. Are you still with me? www.axicon.com
  21. 21. Types of verification - linear - 2D - all-in-one - PC system - Portable system - off-line (>95%) - in-line www.axicon.com
  22. 22. What does it look like www.axicon.com
  23. 23. What does it look like 2 www.axicon.com
  24. 24. In-Line verification - All codes are verified - All results can be stored and kept as proof of ISO compliance - Will usually also do data content checking (AI check, sequential numbering etc.) www.axicon.com
  25. 25. However… - 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 www.axicon.com
  26. 26. In-Line verification - Requires stable web printing - Mind your speed! - Barcode orientation is important - What action should be taken when faulty barcodes are detected? - Can the printer/system be paused by an external device? www.axicon.com
  27. 27. Thank you! www.axicon.com
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