User guide

Bar Code Printing on the LA600 MultiPrinter
20.7 Characteristics of the Supported Bar Code Styles
20.7.1 Code 39
As shown in Figure 20–1, the Code 39 bar code style provides the means to
encode the entire ASCII character set. This system supports all 128 ASCII
characters by using four prefixes for the 26 letters of the alphabet. These four
prefixes are the Extended Code 39 symbols:
$
/
%
+
Extended Code 39 prints like Code 39. Extended Code 39 decodes and prints
the control characters as their combined printable codes.
The following characteristics also apply to Code 39:
• A check digit, though not required, can be calculated by the application
based on modulo 43.
• The recommended ratio of wide to narrow elements is 2.5, though the ratio
can range from 2.0 to 3.0.
• Minimum symbol height is 25% of symbol length—at least 20 millimeters.
• Maximum number of characters encoded is 20.
• Minimum quiet zone width is 10 times the width of the narrow element.
20–16 Bar Code Printing on the LA600 MultiPrinter