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.

Verify the Whole Printing Process

Most people think of verification as something that is done during the on-press part of the printing process. What a shame this sort of thinking is. Consider that there are two major steps in the printing process: pre-press and on-press. Pre-press is the Error Prevention step. On-press is the Error Detection step. Verify the whole…

How Do You Test a Bar Code?

Maybe the first question is why do you test a bar code—why is it necessary? It is necessary to test a bar code because when it doesn’t work right, it causes huge problems and potentially huge liability. Bar codes hold the retail supply chain together and make it possible to track the movement of foods,…

Bar Width Reduction

Bar width reduction or BWR is compensation in the bar code data file for press or dot gain. The act of putting ink onto a substrate almost always results in that image spreading. Scanning a bar code is negatively impacted by fattened bars and thinned spaces.  Bar width reduction factors the design file, reducing bar…