Printing machine having ghost countermeasure roll, and ghost countermeasure roll

摘要

PROBLEM TO BE SOLVED: To realize "reduction of ghost" by making a fixing roll reciprocally swing once during a period a plate cylinder rotates by two to four times, and by making a fixing roll in a bottom stream and/or a second fixing roll from the bottom stream reciprocally swing or the like.SOLUTION: A printer 1 has a fixing roll 2 that rotates and a plate cylinder 3 that contacts to fixing roll 2 and rotates. The fixing roll 2 at least includes a swing roll 4 which reciprocally swings once along a roll rotation axis J during a period in which the plate cylinder 3 rotates 2 to 4 times. Otherwise, the printer 1 has a plurality of fixing rolls 2 which rotate and the plate cylinder 3 which contacts to the plurality of fixing rolls 2 and rotates. A fixing roll 2d in bottom stream among the plurality of fixing rolls 2 and/or a second fixing roll 2c from the bottom stream may be a swing roll 4 which reciprocally swings along the roll rotation axis J.SELECTED DRAWING: Figure 1