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All direct thermal and thermal transfer materials do not use the
same Darkness setting. The best way to check for the proper
Darkness is to use a bar code verifier that actually measures
bars/spaces and will calculate the PCS ratio. Without the
assistance of a verifier, your eyes and/or the scanner to be used in
the system may be used for picking the optimum Darkness setting.
What follows is a simple yet effective method for adjusting the
Darkness to print “in-spec” bar codes.
1. Load media according to the appropriate media loading
and ribbon loading instructions in the Installation Section.
Ensure that the proper print method has been selected.
2. To print a label for evaluation, use the following procedure:
A. With Power OFF, press and hold the FEED key.
B. Turn the printer power ON, then release the
FEED key. The printer begins printing test
labels.
3. Print a label, then press the PAUSE key. The label will contain
several bar codes as well as other printer information. Normal
bar codes are printed in a horizontal format as they feed out of
the printer. Rotated bar codes are printed in a vertical format.
4. Compare the test label printed, to the bar codes in Figure C.1.
If the test label appears too dark or too light, increase or
decrease the Darkness setting accordingly.
5. Resume printing by pressing the PAUSE key again. Print
a few labels at the new setting and verify that proper “in-
spec” bar codes are being printed. Repeat steps 3, 4, and 5
until satisfied.
6. To stop printing test labels, press the PAUSE key, then
press the CANCEL key.
C-1