| 摘要 |
PURPOSE: A printing machine is provided to temporarily move an air injection device for blowing injection air to dry a sliding surface of an impression cylinder between printing units without any additional space for the movement, thereby precisely observing a printed surface of a paper. CONSTITUTION: In the printing machine, an impression cylinder(1) is positioned in a central part to mount a plurality of printing units(2,3;2',3'). At least one air injection device(5) is mounted between the two printing units so that injection air is blown in the impression cylinder direction to dry a sliding surface of the impression cylinder. In order to move the air injection device without any further space, the air injection device is able to be pushed from the impression cylinder almost radial direction and returned onto the impression cylinder, wherein the air injection device is mounted in a guide rail(9) fixed on a frame via a sliding carriage or a carriage(7).
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