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Possible Causes:
•
Small X dimension (<0.10") makes narrow spaces appear too narrow.
•
Verifier aperture too large
Potential Solutions:
•
Make narrow spaces slightly wider than narrow bars (if possible).
•
Check for proper verifier aperture size (see Wand/Mouse Aperture
Selection Table on page 21.)
Problem: High Defects
Possible Causes:
•
Ribbon/substrate mismatch (thermal transfer)
•
Dirty printer
•
Incorrect toner (laser)
•
Verification aperture too small
Potential Solutions:
•
Ensure proper ribbon/substrate match (check with suppliers)
•
Clean printer
•
Match toner to laser imaging drum (check with manufacturer)
•
Check for proper verifier aperture size (see Wand/Mouse Aperture
Selection Table on page 21)
Dimensional Tolerance Failure or Cautions
Possible Problems:
•
Bars exhibit excessive uniform growth
•
Bars exhibit excessive uniform reduction
Potential Solutions:
•
Increase or reduce ink and/or pressure (as appropriate) for wet ink
processes
•
Check with film master manufacturer for bar width reduction/growth (wet
ink processes)
•
Increase or reduce heat (as appropriate) for thermal printers
•
Check for proper "break in" or excessive use of matrix impact ribbons.
Error messages
There are a few error messages you may see that are unrelated to the symbol
being verified. The error messages and causes are shown below.
Scanning Speed
34
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