Appendix C - Darkness Adjustments M-Series User ’s Guide
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 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 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.
