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NCR RealScan 7882 Installation and Owner Guide
497-0419630 Release F 09/02
19 of 62
Determining Label Quality
Many labels in a typical retail environment are unreadable. The following illustration
shows some of the common problems. Vendors and printers regularly supply products
to the market with bar codes that are over-printed, under-printed, or truncated. Some
labels have missing margins. Others may be printed around the corners of packages, or
on media not likely to remain flat when picked up.
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Bar Code Scratched
Bar Code Folded
Bar Code Truncated
Bar Code Torn
Poor Color Contrast
Red Bar Code On
Red Background
The readability of a label depends on variables such as size, placement, color, paper
type, ink viscosity, and package coatings. The middle of a printing run can yield
erroneous labels due to the many variants involved. In particular, poor color contrast
and marginal print quality can make a label hard to read.
UPC bar code requirements are identified in the UPC Symbol Specification Manual
that is published by the Uniform Code Council, Inc. Contact the following for a copy of
this document.
Uniform Code Council, Inc.
8163 Old Yankee Road, Suit J
Dayton, OH 45458
Phone: 513-435-3870
Contact the following for information on Code 39 or "3 of 9" bar code labels.
AIM – USA
634 Alpha Dr.
Pittsburgh, PA 15238-2802
Phone: 412-963-8588
EAN bar code requirements are identified in General Specification for Article
Symbol Marking, Copyright EAN-1977.