Brother International TD-4520TN Users Guide - Page 41

Problem Poor Print Quality. Labels are skipped when printing. Possible Cause  The ribbon/media is loaded incorrectly.  Dust or adhesive has accumulated on the Print Head.  The print density is set incorrectly.  The Print Head mechanism is damaged.  The ribbon/media are incompatible. Solution  Reload the media/ribbon.  Clean the Print Head.  Clean the Platen Roller.  Adjust the print density and print speed.  Run the printer self-test and check the Print Head test pattern for missing dots.  Install the correct ribbon/media.  The label size is not specified correctly.  The sensor sensitivity is not set correctly.  The media sensor is dirty.  Check if the label size is set up correctly.  Calibrate the sensor using the Auto Gap or Manual Gap options.  Clean the Gap/Black Mark Sensor using a blower brush.  Calibrate the sensor sensitivity again.  Set the correct label size and gap size.  If using the BarTender software, set the Vertical Offset in the driver. The printing position of small labels is incorrect.  The media sensor sensitivity is not set correctly.  The label size is incorrect.  The vertical offset setting in the driver is incorrect. Incomplete printing on the left The label size is set up or right side of label. incorrectly. Warped labels. Blank labels with gray lines. Irregular printing.  The ribbon is installed incorrectly.  The media is installed incorrectly.  The print density setting is incorrect.  The media is not fed correctly.  The Print Head is dirty.  The Platen Roller is dirty. The printer is in Hex Dump mode. Set the correct label size.  Adjust the print density to improve the print quality.  Make sure the label guide touches the edge of the Media Guide Tips.  Clean the Print Head.  Clean the Platen Roller. Turn the printer on and off to skip the dump mode. (See section 4.3.2) For more information about cleaning the printer, see section 7. 37