Mr. Nachtrieb has 30+ years of hands-on experience in barcode technology. His team imaged the film master for the first commercially scanned barcode in North America (1974). His specialty is barcode quality. He created and hosts a highly customized barcode quality seminar which has been presented to 100's of companies, reaching thousands of quality-concerned people, helping them to avoid barcode problems and manage barcode-related risk.

The Dangers of an Old Verifier

Verifiers are expensive. Sometimes companies are reluctant to invest the money and once they finally do, they are reluctant to let go of an old verifier that still works. But sometimes an old verifier that works is worse than one that does not work. Here are some reasons why. “Working” is one thing; “functioning properly”…

Bar Width Reduction

Bar width reduction or BWR is a method for adjusting the graphics design file of a barcode to compensate for press gain. Press gain or ink spread is one of the most common causes of poor barcode performance. Bar width reduction is a compensation for press gain Not all barcode design software provides for bar…

Bar Codes on Corrugated

It is a widely accepted fact that printing bar codes on corrugated is a challenge. TAPPI and other trade groups recognize that the verification grade is seldom better than ANSI D (ISO 0.5-2.3) due to the low reflectance value of the bare kraft substrate. There is very little that can be done to improve this,…

Scan Reflectance Profile

The Scan Reflectance Profile or SRP is a graphic representation of the changing reflectance values of a linear bar code across its width, from leading quiet zone to trailing quiet zone. As the scanner detects and, through a timing algorithm, “measures” the widths of each element (bar and space), it acquires a reflectance reading that…