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a product, part, or publication number. Bar codes are designed to be read by a
device called a bar code reader or scanner. The scanner must be compatible with
the printed bar code symbology.
The following sections show examples of two bar codes: Code 3 of 9 and
POSTNET.
Code 3 of 9 Bar Code Example
Code 3 of 9 is a discrete bar code symbology because each character stands by
itself and is separated from the others by a non-data space or intercharacter gap.
Code 3 of 9 is constructed so that each character has 9 elements (count both bars
and spaces, but do not count the intercharacter gap) with 3 of those elements being
wide.
Figure 26 shows an example of the Code 3 of 9 bar code symbology.
POSTNET (Postal Bar Code) Bar Code Example
The POSTNET bar code uses five bars to represent a digit. The data is based on
the height of the bars instead of on their width. This symbology requires a check
digit or a correction digit. POSTNET is a numeric bar code only with each digit
that has 2 tall bars and 3 short bars.
Figure 27 shows an example of the POSTNET bar code symbology.
How APU Works with Bar Codes
APU provides comprehensive support for bar codes:
v Printing application data or constant data in bar code format
v Handling the 12 major bar code symbologies and their variations
v Full control over size and positioning
v Handling the special attributes of each bar code, such as human-readable
information and check digits
In the following example, the zip code is remapped into a POSTNET bar code.
From the Define Field Mapping panel, use F14 to mark the beginning of the zip
code field and F15 to mark the end of the zip code field, then press Enter. The
Select function pop-up panel appears. Select Map as Bar Code to see the
following panel.
Figure 26. Code 3 of 9 Bar Code Example
Figure 27. POSTNET Bar Code Example
30 APU User’s Guide