Being that clear it's probably an impression cylinder transfer.
The press wets and inks the plate, then the plate prints to a rubber sheet on a metal cylinder(The blanket). Then the paper is fed between that cylinder and a smooth metal cylinder (The impression cylinder).
If the ink and printing is engaged before the paper feed, the blanket prints onto the impression cylinder. Also if the paper feed is stopped for some reason before the inking is stopped.
Then the next sheet gets printed in reverse on the back side of the paper.
So the operator probably stopped the press without stopping the ink. Maybe a paper jam in the feeder, maybe for break. Then on restart ran a blank sheet through which got the offset from the impression cylinder.
Maybe a few blank sheets, the feeder jam seems likely, and if it was happening a lot that day he'd have fussed with things trying to get it fixed.
Steve B
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10-10-2013, 11:25 AM
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