How-to-Guide / Automotive Assembly

How to maximize the implementation of Bar Code Lasing (on Anodized Aluminum).

March 5, 2014
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The UPC and Code 39 codes are very common, linear or “1D” codes. They are read with barcode scanners (like the ones used at many cash registers).These codes require very specific rules regarding contrast level, bar width, space width and “quiet zone”. They are also typically limited to numerals or lower case letters. The other code is referred to as Data Matrix or “2D” code. It is a more sophisticated, more robust code that does not require as much contrast. A significantly larger number of alpha-numeric characters can be encoded in this image. The code is read via a camera based reader, and is redundant within the “checker board” pattern.The readers for Data Matrix and other 2D codes are similar in cost and availability compared to readers.

The (3) codes in the pictures were lased in a positive pattern. It is also possible to lase the code inverted. In some cases, an inverted code may read more consistently than a positive code.

The pictures shown above, depict (3) typical machine readable codes that can be produced with the laser. The Barcode Wizard within the Gravostyle software makes it easy to tailor the code to specific needs.

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