Method and apparatus for cleaning printing cylinders

A method for cleaning a printing cylinder of a printing system comprising:

• providing a cleaning cassette in the printing system, the cleaning cassette comprising a roll of cleaning fabric, said cleaning fabric comprising a liquid absorbable material soaked with a cleaning liquid, wherein said cleaning liquid comprises a polar additive containing at least one of a glycol ether and a long-chain alcohol, the cleaning liquid comprising the polar additive in a range of 50 wt % to 90 wt %, the polar additive having 10 to 16 carbon atoms;
• wherein said polar additive is configured to make the cleaning liquid polar;
• wherein said cleaning fabric is wrapped around a core to form said roll, the cassette having a support adapted and configured to support the roll of the cleaning fabric, the cassette comprising a collecting roller around which used cleaning fabric is configured to be wrapped;
• unwinding from said roll at least a portion of said cleaning fabric soaked with a cleaning liquid;
• and
• cleaning a print cylinder of the print system by placing said at least a portion of said cleaning fabric in contact with a print cylinder to be cleaned;
• and
• wherein the roll of cleaning fabric is soaked with the cleaning liquid before the roll is installed in the cleaning cassette.