UBI EasyCoder 501 – Service Manual
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Test Label 2
Test label 2 contains a chessboard pattern that reveals any variations
in printhead quality, weak printout, and wrinkled transfer ribbon.
Stronger printout on one side indicates misalignment in the print-
head mechanism, whereas spots with weaker or darker printout are
symptoms of an unevenly worn pressing roller (platen) or foreign
objects on it.
A sudden change from darker to weaker printout across the paper
indicates a small image buffer. In extreme cases, only part of the
pattern will be printed.
Test Label 3
This test label contains two examples of the Code 39 bar code plus
an EAN 13 bar code printed in picket fence attitude, i.e. with the bars
running along the paper web. The readability could be checked
visually or with a bar code scanner.
24.1
Test Labels, cont'd.
24. PRINT QUALITY ADJUSTMENT, cont'd.
Continued!
CODE39
CODE39
1 23 45 67 890 12 8
Содержание EasyCoder 501 SA
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