Intermec EasyCoder 501 Service Manual page 185

Chapter 24 Print Quality Adjustment
24.1 Test Labels, cont.
184
Test Label 2
Test label 2 contains a chessboard pattern that reveals any varia-
tions 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 media
indicates a small image buffer. In extreme cases, only part of the
pattern will be printed.
Test Label 3
CODE39
1 23 45 67 890 12 8
This test label contains two examples of the Code 39 bar code plus
an EAN 13 bar code printed in picket fence attitude, that is, with
the bars running along the media feed direction The readability
could be checked visually or with a bar code scanner.
CODE39
Intermec EasyCoder 501 – Service Manual Ed. 7