Printing Guide

Troubleshooting
4-6
Troubleshooting
4
The layout for the German 25 Postal bar code is not correct.
Cause The size and text of the bar code are not printed as expected.
Remedy To print the German 25 Postal bar code in the correct layout, use 124 for the p
parameter and 300 for the h parameter. For example, <Esc>(s124p300h24642T.
An error message is displayed with the 2 of 5 Interleaved bar code.
Cause The number of encoded digits is not even, in multiples of two.
Remedy If you are using a checksum, you must send an odd number of digits. (The
calculated checksum will add one character, making the total data length an
even number.)
Narrow bar codes are not readable.
Cause In all laser printers, thin lines do not have a perfectly clean edge because the
toner particle shape is not square. This results in narrow black bars that are
wider than the blank spaces of the same width.
Remedy Fine tune the bar width using the b and s parameters to reduce the horizontal
width of the thin black bars, or use the s parameter to widen the thin white bars
(blank spaces).
Bar codes on the very top of the page are not printed correctly.
Cause As bar codes are printed at the current cursor position from the baseline to the
top of the page, they may not be printed correctly (i.e., wrong height or caption
text in the middle of the bar code).
Remedy Make sure that you set the cursor in a vertical position, compatible with the bar
code height.