Printronix T5000e Series Module Manual page 12

Chapter 1
Overview
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Refer to Table 1 for the minimum x-dimension requirements for
each printer size of a 300 dpi printer.
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The validator can also evaluate PDF 417 bar codes. For PDF
417 Limited, the validator works best with security level 5 or
higher, using the current default printer settings for Defects
Percentage, Percent Decode, and Decodeability. For lower
security levels, lower the Defects Percentage to 5% to enable
checking for bar code damage.
Stacked, 2D, and vertical (ladder) bar codes are not supported.
Bar codes must have a minimum x-dimension of 10 mil
(0.010 inch) to be recognized by the full width of the scanning
beam. The validator can recognize bar x-dimension as narrow
as 6.6 mil (0.0066 inch) for 300 dpi printers, and 10 mil
(0.010 inch) for 203 dpi printers. The validator cannot
recognize x-dimensions smaller than 6.6 mil (0.0066 inch) or
larger than 40 mil (0.040 inch).
Table 1: Minimum X-Dimension and Beam Width for
a 300 dpi Printer
Printer Size Beam Width
4 inch 4.5 inches
6 inch 6.5 inches
8 inch 8.5 inches
Minimum
X-Dimension
6.6 mil
10 mil
13 mil