Digital Printing technology has progressed, Printing On Demand (POD) has become widely recognized and applied. Digital technology offers high flexibility to printers for personalised, security and financial documents. This requires substrates with a high degree of cleanliness. Simco-Ion designed a complete Plug and Run system for narrow web cleaning to be installed on the substrate web prior to entering the printing unit. Contamination is removed, print quality is improved whilst misprints are prevented. Service intervals are reduced due to the collection of paper dust.