Operator’s Guide Appendix K
002-5564 RJS, Minneapolis, MN
The ability to read a bar code symbol from any angle
as long as the bar code passes across the scanner
window.
Opacity
The property of a material that minimizes the show-
through of printing from the back side or the next
sheet.
Overhead
The number of characters in a symbol required for
start, stop and checking.
Over-laminate
A coating or material adhered to the scanning
surface of a bar code symbol.
Parity
A system for encoding characters as “odd” or “even”
for self checking of barcodes.
Peak
The graphical pattern on a scan reflectance profile
which looks like an upside down “U” or “V.” Within a
profile a peak represents a space. One or more
peaks could also be found within an element
representing a reflectance change within an element.
Plaque
A template used as a reflectance calibration standard
(RCS). The known reflectance values are posted on
the back of the plaque.
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