NLS-Glossary

Work-In-Progress/Process. An application using bar code totes and bar code scanners to track lots through a manufacturing operation.                                                              

The Wollaston prism is a beampolarization splitter. E1 is orthogonal to the plane of the paper and also to the optic axis of the first prism. E2 is in the plane of the paper and orthogonal to E1. e-ray is the extraordinary wave and o-ray is the ordinary wave.

An AS/400 program that serves as a link between an output queue and a printer. Normally the writer is started automatically at AS/400 IPL time.                                                  

The nominal dimension (height, width, or diameter) of the smallest element in a barcode symbol. It is often expressed as multiple, as in 1X or 10X. Specifies the width of the narrowest unit in a barcode. Usually, this is the width of the narrowest bar or space. A single X dimension is called a "module." Wider elements in the barcode are measured as multiples of the X dimension. Therefore, the X dimension correlates directly with the overall width of the barcode and therefore its density. 

Optimize the Module Width
Printing tolerances can lead to problems when decoding a barcode. A remedy for this problem is to optimize the module width with respect to available printing resolutions.
Assume you want to print a barcode with a resolution of 300 dpi then one pixel equals 0.003333 inch (or 0.08466 mm) in such a case. To avoid raster errors, you should select a module width that is an integer multiple of the pixel width (e.g. for 300 dpi a multiple of 0.08466 mm).

A technique used to shorten U.P.C. codes by removing zeros from the bar code in a predetermined manner.