Zebra Technologies 170PAX2TM manual Appendix D, Adjusting Darkness For In-Spec Bar Codes

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Appendix D

Adjusting Darkness For “In-Spec” Bar Codes

All direct thermal and thermal transfer materials do not require the same darkness setting. The best way to check for proper darkness is to use a bar code verifier that actually measures bars/spaces and will calculate the print contrast. Without the assistance of a verifier, your eyes and/or the system scanner are the best bet for choosing the optimal darkness setting. What follows is a simple yet effective method for adjusting the darkness to print “in-spec” bar codes.

1.Load media according to the appropriate media loading and ribbon loading instructions in “Getting Ready to Print.” Insure the proper print method has been selected (see “Configuration and Calibration”).

2.To print a label for evaluation, turn the power off; then, press and hold the FEED key. Next, turn the printer power on and release the FEED key. The printer will begin printing test labels.

3.Print a label, then press the PAUSE key. The label will contain two bar codes, as well as other printer information. Normal bar codes are printed in a horizontal (“picket fence”) format as they feed out of the printer. Rotated bar codes are printed in a vertical (“stepladder”) format.

4.Compare the test label printed to the bar codes in Figure 28. If the test label appears too dark or too light, refer to “Configuration and Calibration” and increase or decrease the darkness setting accordingly.

5.Resume printing by pressing the PAUSE key again. Print a few labels at the new setting and verify that proper “in-spec” bar codes are being printed. Repeat steps 3, 4 and 5 until satisfied.

6.To terminate the printing of the test labels, first press the PAUSE key and then press the CANCEL key.

Too Dark

Labels that are too dark 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 ones 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

Labels that are too light are obvious. Both normal and rotated bar codes have incomplete bars and spaces. Small alphanumeric characters are unreadable.

170PAX2-Series User’s Guide

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Contents Zebra 170PAX2 -Series User ’s Guide Product Improvements Proprietary StatementFCC Compliance Statement Canadian DOC Compliance StatementContents 170PAX2-Series User’s Guide OptionsZebra 170PAX2 Print Engine IntroductionGetting Started Print Engine MountingCable Connections Printer PowerMedia Loading Media & Ribbon LoadingMedia Loading Left-Hand Units Right Hand Units Ribbon LoadingLeft Hand Units Removing Used RibbonMedia Sensor Position Reflective Media SensorTransmissive Media Sensor 170PAX2-Series User’s Guide Power On/Off Switch Printer OperationFront Panel Keys Front Panel Indicator Lights LEDs Liquid Crystal DisplayControl Panel Keys Entering the Program Mode Configuration and CalibrationChanging Password-Protected Parameters Leaving the Program ModeConfiguration Process Setting Print ParametersSetting Darkness Selecting the Print Mode Setting the Tear Off PositionSelecting the Media Type Selecting the Sensor TypeSetting the Print Width Setting the Maximum Label LengthSelecting the Print Method Label Feed Listing Printer Information Initialize Card Sensor Profile Media and Ribbon Sensor CalibrationMedia and Ribbon Calibration Setting the Host Port Setting Communication ParametersSetting the Baud Rate Setting the Data BitsSetting the Stop Bits Setting the ParitySetting the Host Handshake Setting the ProtocolSetting the Communications Mode Setting the Network IDControl Prefix Character Selecting Prefix and Delimiter CharactersFormat Prefix Character Delimiter CharacterSetting Ribbon Tension Selecting ZPL ModePower Up and Head Close Parameters Media Power UpLabel Positioning Parameters Head CloseBackfeed Sequence Label Top Position Setting the Label Top PositionLeft Position 170 PAX2-Series User’s Guide Setting the Left PositionHead Test Function Head ResistanceVerifier Port Applicator Port Setting the Applicator PortSetting the Start Print Signal Setting the Resync ModePrinting Controls Selecting the Ribbon Low Feature Reprint ModeSensor Values LCD Adjust Printer LanguageSelecting the Liquid Crystal Display LCD Language Cleaning Care & AdjustmentsCleaning the Exterior Cleaning the InteriorSensor Locations Right-Hand Unit Shown Cleaning the Printhead and Platen RollerToggle Positioning Printhead Pressure AdjustmentPrinthead Pressure Right-Hand Unit Shown Power On Self Test TroubleshootingPrinter Troubleshooting Power On TroubleshootingFor Thermal Transfer For Direct ThermalStoring Bitmap Explanation of Errors Creating BitmapBuilding Format Storing FormatFirst calibrate the printer, then CC , CT , and CD Cancel Key Self Test Printer Self TestsIntroduction Pause Key Test Sample Printout 170PAX2-Series User’s Guide Pause Key Self TestFeed Key Self Test Feed Key Self TestParameter Controlled by Feed Key and Pause KeyResults of Communications Diagnostic Test Communications Diagnostics TestSingle In-line Memory Module Simm OptionsCommunication Interfaces ZebraNet Micro Print Server MPS170PAX2-Series User’s Guide Media Specifications Printer SpecificationsRibbon Specifications Printing ConsiderationsCommunications Specifications Zebra Programming Language ZPLBar Codes Standard Printer Fonts Physical MemoryElectrical FusesPower Fuse Replacement AC Power Cord RequirementsAC Power Cord Specifications Appendix aShipping Installing a FusePrinter Communications Interface Technical Information Appendix BSystem Considerations Interface ConsiderationsRS-232/RS-422/RS-485 Pinouts RS-232/RS-422/RS-485 Serial Data PortPin to 25-Pin Interconnecting Cable RS-422/RS-485 Interconnecting Cable Centronics-Compatible Parallel Data Port Applicator Interface Connector DB-15 Connector Printer to ApplicatorCabling Requirements See the Configuration and Calibration section Fuse 1 JP1 JP2 Appendix C Ascii Code Chart170PAX2-Series User’s Guide Appendix D Adjusting Darkness For In-Spec Bar CodesBar Code Darkness Comparison In-SpecAppendix E Installation InformationFront View of Right Hand Printer 451 748 11.45 mm 222.2 mm 170PAX2-Series User’s Guide Glossary Glossary Printer configuration See configuration 170PAX2-Series User’s Guide Index Index Index Page Page Zebra Technologies Corporation

170PAX2TM specifications

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