Try the following:

• Print labels so that barcodes are placed in the direction as shown below:

  1 Tape feed direction



• Try to use another scanner.


• Set [Print Speed] to a slower option. The print speed can be specified in the Printer Setting Tool.
  Refer to the FAQ: "Using the Printer Setting Tool (for Windows)"
   
• Adjust [Print Density]. The print density can be specified in the Printer Setting Tool.
  Refer to the FAQ: "Using the Printer Setting Tool (for Windows)"

  This printer is not designed exclusively for creating barcode labels. Always check that barcode labels can be read by the barcode reader.