Best Practices

5 FAQs About Choosing Bar Codes

Courtesy of Brodart Library Supplies & Furnishings

1. What is bar code symbology and how does it work?

Symbology is a specific language (made from bars and spaces) that sends a number to the software through a scanner. A bar code is "read” when a beam of light from a scanner is passed over the bars/spaces.

2. What symbology do I need?

Your circulation software determines the bar code symbology you need. Each software program reads a specific language. The two basic symbologies are Code39 (Code 3 of 9) and Codabar. The third (and least used) symbology in library applications is Interleaved 2 of 5. If you can't find your software's specifications in your software manual or are unsure, call your software vendor and ask what symbology your software supports.

3. What are the differences between digital, laser and thermal bar codes?

All three bar code label types are acid-free and are chemical- and UV-resistant. Thermal have a matte finish. Digital and laser are offered in laminated and non-laminated. All types are available in singles, doubles or pairs.

• Digital: These labels are the latest in technology and most durable bar codes available. Imaged on 4-mil 60-lb. white paper with a 1-mil permanent archival-safe acrylic adhesive. Advantages include: 100% guaranteed first time read-rate; higher print-contrast ratio than photocomposed; archival quality; no change in adhesive; greater abrasion resistance than all other technologies; and a lower cost than photocomposed.

• Laser: These labels are printed on a 24-lb. smudge-proof paper using a 1200 dpi laser printing system. Available in five background colors or white.
  

• Thermal: These labels are printed on a 2-mil polyester material. Available with colored text, color stripe or colored eye-readable digits.

4. Do I Need a Protector?

We recommend using a protector to:

• Protect non-laminated bar code labels

• Repel dirt and other damage

• Keep information readable longer

• Eliminate lifting and peeling labels

• Extend the life of labels
  

Protectors specifically designed for use on bar code labels are best to use. Generic tape or protectors may lose quality, which increases the risk of damage to the bar code label. See our complete selection of bar code label protectors for a variety of options.

Quality protectors can extend the life of the bar code if chosen and applied properly. Protectors will not affect the read, however you should always test the scan after a protector is applied to one or two bar codes to ensure an accurate read.

5. What is a scanner, and how do I choose one?

A scanner is the vehicle by which the information from your bar code is decoded and sent to your software package. As with any product, there are many levels of quality and various styles on the market. Always purchase the best-quality product that your budget allows.

For more information, please contact:

Brodart Library Supplies & Furnishings. www.shopbrodart.com