| 摘要 |
<p>Disclosed is a dampening roll which receives spray from a multi-nozzle spray member having a pair of overspray preventing shields mounted at opposite ends of the spray path and projecting into close relation to the dampening roll. An oscillating roll runs against the dampening roll to spread the moisture film and a wet form roll provides contact between the oscillating roll and the plate cylinder. The oscillating roll has a length generally equal to the length of the wet form roll plus the oscillating roll stroke length and the dampening roll has a length slightly less than the length of the oscillating roll plus the oscillating roll stroke length. Preferably, the spray member oscillates transversely along the dampening roll and the distance between the inside surfaces of the spray shields plus the spray member stroke is slightly less than the length of the dampening roll.</p> |
