Kodak 9500 Bedienungsanleitung Seite 85

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Seitenansicht 84
A-61092 September 1999 8-17
Table 2 identifies the most common causes of low bar code
ratings/grades.
Table 2 — Common Causes of Low Bar Code Ratings
Field Problem Type Cause
W/N
NEW
Dimensional Bar codes not printed according to
specifications (refer to Kodak publication
Bar
Code Made Easy,
A-61099).
Inaccurate measurements due to:
Ink smearing (improper curing)
Ink spreading (use of super-absorbent
paper)
Use of dot matrix printers (ragged edges)
RMIN
CONTRAST
Reflectance Bar elements are too light often caused by:
Use of old ink ribbon
Hammer pressure too light
Defective/dirty print head
Space elements are too dark often caused by:
Dark colored paper background
Stain on paper
MOD Reflectance Bar code element edges are ragged rather than
straight often caused by use of a dot matrix
printer.
DEFECT Reflectance Bar elements contain voids (white spots) often
caused by:
Use of old ink ribbon
Hammer pressure too light
Defective/dirty print head
Space elements contain dark spots often
caused by:
Paper with flecks
Ink smearing (improper curing)
Ink spreading (use of super-absorbent
paper)
Defective/dirty print head
Toner contamination (if using a laser printer)
Upon completion of the test:
Remove the bar code from under the scan head if a Static Bar Code
Evaluation has been performed.
Press C to return to normal operation, or press Stop to remain in the
test environment.
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