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Elements of Card Design
Bar Code Size
A lower density bar code is easier to read, because the bars are wider and spaced farther
apart.
The width of the narrow elements in the bar code must be large enough to be read
consistently. The capabilities of the bar code reader can influence this.
The bar code must be tall enough to be read under normal conditions.
Bar Code Print Settings
To achieve the best quality printing and improve the readability of the bar code, use the K
(black) panel of color print ribbon to print the black bars. Bar codes printed with YMC panels
are not as crisp and sharp as those printed with the K panel only. Refer to the documentation
for your card personalization software for more information about how to print bar codes
using the K panel.
Infrared readers require that the K panel be used to print the bar code.
Test Bar Codes
Always test the readability of bar codes under production conditions. Factors to consider include:
If you print cards one at a time, print the samples using that method. If you print cards in
batch (many cards sent to the printer at the same time), use a production-sized batch and
evaluate cards from the beginning, middle, and end of the batch.
Use exactly the same card stock for testing that you use for production. The card stock can
affect the readability of bar codes. Usually, a white surface that reflects light in many
directions is needed. Test cards before purchasing production quantities.
Include other card design components that you use in production, such as topcoat.
Use the same bar code readers as users have, and test each card multiple times to simulate
any wear the card might experience. Also test multiple cards.
Card Design Changes That Affect Bar Codes
If you make substantial changes to the way you produce cards, review your setup tasks to make
sure that cards continue to have the quality you require.
Changes that can affect bar codes include:
Purchasing a new brand of card stock, which can change the color of some images.
Changing to, or from, preprinted cards, which can change the color of some images.
If you change the design of your cards, or if you start producing an additional card design, test
each design as described in
to make sure that the bar code prints as expected.
