| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that stain is easy to stick and accumulate on a nozzle surface and cleaning of the nozzle ejection port is insecure and difficult, and, as a result, a stain prevention system may become inevitably large-sized, in a conventional nozzle. SOLUTION: A spray type damping water feeding apparatus supplies damping water by spraying through a nozzle 10 to the peripheral face of a roller R which leads to the printing plate face or the printing plate of an offset printing machine P, in which the nozzle 10 has a guide face 1 which slants toward the center ejection port 13 on the downstream side in the damping water ejection direction from the outer peripheral side on the upstream side in the damping water ejection direction, a partition wall member 40 is provided with an opening port 41 at a position facing against the ejection port 13 of the nozzle 10, and a spraying apparatus is provided with an opening/closing means 70 capable of opening/closing the opening port 41. COPYRIGHT: (C)2004,JPO
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