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86 Zebra S-Series User’s Guide
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Too Dark — Dark labels are fairly obvious. The normal bar code bars
increase in size, and the openings in small alphanumeric characters may
fill in with ink. It may be readable but not “in-spec”. Rotated bar code
bars and spaces run together.
Slightly Dark — Slightly dark labels are not as obvious. The normal bar
code is “in-spec”. Small character alphanumerics are bold and could be
slightly filled in. The rotated bar code spaces are small when compared to
the “in-spec” code, possibly making the code unreadable.
Slightly Light — Slightly light labels are, in some cases, preferred to
slightly dark for “in-spec” bar codes. Both normal and rotated bar codes
are “in-spec”, but small alphanumeric characters may not be complete.
Too Light — Light labels are obvious. Both normal and rotated bar codes
have incomplete bars and spaces. Small alphanumeric characters are
unreadable.
In-Spec — The “in-spec” bar code can only be confirmed by a verifier, but
it should exhibit some very visible characteristics. The normal bar code
has complete, even bars and clear, distinct spaces. The rotated bar code
also has complete bars and clear distinct spaces. Although it may not look
as good as a slightly dark bar code, it is “in-spec”. In both normal and
rotated styles, small alphanumeric characters appear complete.