NCR 7882 manual Determining Label Quality, 1234 5 678

Page 19

NCR RealScan 7882 Installation and Owner Guide

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.

0

01 234 5

78 9

6

Bar Code Scratched

0

0 1234 5 678 9

 

Bar Code Torn

0

01 234

5 6

6

Bar Code Folded

00 1234 5 678 9 6

Poor Color Contrast

0

01234 5 678 9

6

Bar Code Truncated

0 01234 5 678 9 6

Red Bar Code On

Red Background

R0026

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.

497-0419630 Release F

09/02

19 of 62

Image 19
Contents RealScan Installation and Owner Guide Revision Record ContentsObtaining Technical Assistance Obtaining Additional InformationRealScan RealScan 7882 MountingsStep Installation InstructionsConnecting the Cables to an NCR RealScan Installing Power Supply Interface CablesUSB Interface Connection IBM HID Auxiliary RS-232 Port Auxiliary RS-232 PortTurning on the RealScan Setting Program Parameters and Verifying Host ConnectionProgramming the Communication Parameters RS-232 NCR 2170, 7452 Ocia Short Format NCR 2113, 2126 RS-232 Ruby Verifone Ruby 4M UPC/EAN Programming DefaultsPrefix Byte Disable Ascii Code RS-232 Communications Programming for USB ConnectionMaking Other Program Changes UPC-A Scan Sample Tags1234 5 678 Determining Label QualityScan Zone Adjusting Screw Setting RealScan Scan ZoneVertical Pass-by Scanning Horizontal Pass-by ScanningVertical Presentation Scanning from Bottom Vertical Presentation Scanning from TopRubber Feet Mounting RealScanPlastic Top Plate Connect Power Cable and Interface Cable Vertical Mounting Bracket Checkpoint Cable Checkstand CutoutCable Clamps Operating the Scanner Cleaning the Scanner Green Status Indicator Tones Problem Suspect Component Correcting Scanner ProblemsNCR RealScan 7882 Installation and Owner Guide Interface Information Interface ConnectorMost Common Interface Cables Programming Worksheet Communications ProtocolProtocol Checkstand Hole RealScan 7882 Horizontal Mount NCR RealScan SpecificationsCheckstand Hole RealScan 7882 Flat Mount Ventilation Requirements Electrical WiringTone On/Off Programming WorksheetsPeriodical Codes Version DExtend UPC-A To EAN-13 Extend UPC-E To UPC-ATransmit Check Digit CodeMinimum Characters Allowed Full Ascii Check Digit PresentBar Code Type Minimum Data Characters Allowed UCCIdentifier Type Common ByteHandshake Baud RateParity Stop Bits Character LengthIBM Tone Control Good Read Tone Control Message DelayNormal or Eavesdrop Mode Terminator ByteAscii Code Chart Regulatory Information CE Mark Applicability Identification LabelsDeclaration of Conformity Laser Safety Label Laser SafetyLaser Module Label Laser PowerProgramming Tags Volume Adjustment ResetDefault Programming Mode End Save and Reset Abort Diagnostic Mode RS-232 Temporary Service Mode Mode Reset Tallies Hex Hex Hex Hex Hex Hex a Hex B Hex C Hex D Hex E Hex F Copyright 2001, 2002 by NCR Corporation