| 摘要 |
PROBLEM TO BE SOLVED: To provide a dampening means used to dampen a distributing roller of a lithographic printer. SOLUTION: The dampening means comprises a hollow porous roller adjacent to the distributing roller, a dampening solution source containing a dampening solution, a variable speed power mechanism for driving the porous roller to pass the solution source, an air source for blowing to fly the solution obtained from the solution source onto the distributing roller, and a means for laterally vibrating the porous roller to the air source in the case of rotating the porous roller. |
