| 摘要 |
A dampening water amount adjustment apparatus 40 is provided with a plurality of air supply boxes 41 arranged side by side in an axial direction of a water transfer roller 8, each of the air supply boxes 41 forming an air blowing part. The air supply boxes 41 have a substantially U-shaped air passage 67 that causes air inside an air supply chamber 57 to pass along an outer peripheral surface of the water transfer roller 8 and be fed into an air exhaust chamber 60. A valve mechanism 44 that increases and decreases the amount of air is provided midway along the air passage 67. |
