When it comes to maintenance, there are really 3 categories of issue we keep seeing: Labels jamming up on the bottom of the rollerGlue and gunk messing up the sensorGlue from labels building up on the roller Clearing A DYMO Paper Jam Cleaning The Sensor In practice we’ll also just soak a business card in alcohol and run it through… Cleaning The Printer’s Roller Again… we usually just use alcohol and a business card.