Brother QL-600B User Manual page 58

Troubleshooting
Problem
Printed barcodes cannot be read.
Solution
 Print labels so that barcodes are aligned with the print head as shown
below:
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1 Print head
2 Barcodes
3 Printing orientation
 Barcodes may not be read if they are reduced or enlarged.
 Try using another scanner.
 We recommend printing barcodes with Print Quality options set to Give
priority to print quality.
For Windows 7:
To display the Quality options, open the printer properties by clicking Start >
Devices and Printers, right-clicking the printer you want to set up, and then
clicking Printing preferences.
For Windows 8 / Windows 8.1:
To display the Quality options, open the printer properties by clicking Control
Panel in the Apps screen > Hardware and Sound > Devices and Printers,
right-clicking the printer you want to set up, and then clicking Printing
preferences.
For Windows 10:
To display the Quality options, open the printer properties by clicking Start >
Settings > Devices > Printers & scanners > Devices and Printers,
right-clicking the printer you want to set up, and then clicking Printing
preferences.
For Mac:
To change the Print Quality options, open the Print dialog box and select Basic
from the print options pop-up menu.
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