Paxar 9830-CL Operator's Handbook Manual page 34

To clean the printhead, supply sensor, and platen roller:
1. Turn off the printer.
2. Open the cover and printhead assembly.
3. Remove the label roll and ribbon (when cleaning the
printhead).
4. Press down on the exit cover tabs to open the exit cover on
the front of the printer.
Exit Cover
5. Clean the platen roller with a dry cloth or small brush.
However, if there is adhesive gum build-up on the platen
roller, moisten a cotton swab with isopropyl alcohol. Turn the
platen roller with your finger and run the cotton swab or dry
cloth across it. Make sure the platen roller is clean all the
way around.
Care and Maintenance 4-3