Brady 200M - Manual (Page 83)

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 will run together.
Slightly Dark
-
Slightly dark labels are not as obvious. The
normal bar code will be “ in-spec” . Small character
alphanumerics will be 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 will be “ in-spec” , but small alphanumeric
characters may not be complete.
Too Light - Light labels are obvi ous. 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 will have complete, even bars and clear, distinct
spaces. The rotated bar code will also have complete bars and
clear distinct spaces. Although it may not look as good as a slightly
dark bar code, it will be “ in-spec” . In both normal and rotated
styles, small alphanumeric characters will look complete.
Appendix C - Darkness Adjustments M-Series User ’s Guide
C-2