| 摘要 |
A device for feeding dampening solution in an offset printing unit is presented. The device comprises a plurality of nozzles (22), each of which comprises an orifice (24), wherein each nozzle (22) is configured to eject a solitary droplet of dampening solution of a predetermined volume through said orifice (24) to a roller/cylinder (2, 5) of said offset printing unit, and a control means connected to the plurality of nozzles (22) and programmed to allow a predetermined number of nozzles to eject solitary droplets such that a film of dampening solution is provided across hydrophobic areas and hydrophilic areas of a printing plate of said offset printing unit. |
