Is the print density set correctly?
Adjust the print density and print speed.
You can check the settings in the BPM (Brother Printer Management Tool) as follows:
Connect your computer and the printer, and then make sure that the printer is turned on.
Start the BPM, and then click the Printer Configuration button.
Check the Density and Speed settings in the FBPL tab.
Run the printer self-test and check the print head test pattern at the bottom of the self-test printout to see if there is dot missing in the pattern. To learn how to print the self-test, see the FAQ: "Printing the printer configuration (Self-test)".
If the problem still occurs, contact your reseller or Brother Customer Service for assistance.
If your question was not answered, have you checked other FAQs?