Ribbon OutZD421t

Fixing Ribbon Out Error on Zebra ZD421t Thermal Printers

The Ribbon Out error indicates that the Zebra ZD421t printer is configured for thermal transfer mode but fails to detect a ribbon present. This is common when the ribbon runs out, breaks, or is incorrectly installed. Properly addressing this ensures your labels are printed with high quality.

1 views

Common causes

  • 1The ribbon roll is empty.
  • 2The print mode is set to 'Direct Thermal' in the software while ribbon is present.
  • 3The ribbon core is loose on the spindle.

Solutions

Ribbon Loading Check

  1. Ensure the ribbon is loaded on the supply spindle correctly.
  2. Check that the ribbon is pulled taut across the printhead.
  3. Make sure the ribbon sensor is not blocked by excess packaging.

Steps to follow

  1. 1

    Check Spindles

    Ensure both supply and take-up spindles are locked in place.

  2. 2

    Load Ribbon

    Slide the ribbon onto the supply spindle and feed through the printhead area.

  3. 3

    Secure Take-up

    Attach the ribbon to the take-up core and rotate to take up the slack.

Frequently asked questions

Check your printer driver settings to ensure it matches the media and ribbon setup.

No, you must set the printer to 'Direct Thermal' mode in the settings if you choose not to use a ribbon.

Zebra recommends original supplies to avoid sensor detection issues with different ribbon thicknesses.