Diagnostics and Troubleshooting
216
Judging Barcode Quality
Figure 17 shows how printer settings such as darkness and print speed can affect the quality of barcodes.
Set the print darkness to the lowest setting that provides good print quality. Tests such as the Print Test
Format Option on page 219 and the Optimal Darkness and Speed Test on page 224 can be used to help
determine the optimal settings for your printer and media.
Figure 17 • Barcode Darkness Comparison
Too Dark
Labels that are too dark are fairly obvious. They may be readable but not “in-spec.”
• The normal barcode bars increase in size.
• The openings in small alphanumeric characters may fill in with ink.
• Rotated barcode bars and spaces run together.
Slightly Dark Slightly dark labels are not as obvious.
• The normal barcode will be “in-spec.”
• Small character alpha numerics will be bold and could be slightly filled in.
• The rotated barcode spaces are small when compared to the “in-spec” code, possibly making the code
unreadable.
“In-Spec” The “in-spec” barcode can only be confirmed by a verifier, but it should exhibit some visible
characteristics.
• The normal barcode will have complete, even bars and clear, distinct spaces.
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