How to clean an OPC (Organic Photo Conductor) drum for laser printers, copiers. Drum cartridges maintenance and handling Instructions. How to remove lines, marks on the printed sheet - Activate subtitles in your language! - For any question or suggestion leave a comment -------------------------------------------- email: link.accessori@libero.it other links: http://www.emmegiricambi.it/ http://www.samsung.com/it/consumer/pc-peripherals-printer/printers-multifunction -------------------------------------------------------------------------