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…

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…