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Old 09-25-2018, 11:47 AM
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Steve Birmingham
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Join Date: Sep 2009
Location: eastern Mass.
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I believe that's not a mark that was on the plate, but rather a drag mark. The presses have various guides to direct the sheet to the right spot after it's printed, and there are some tinsel like things that are used to dissipate static electricity. Being near the center of the full press sheet, this is probably from the sheet rubbing on one of the strips intended to guide it onto the outfeed pile while the black ink was fresh. That should happen in a few other spots on the top row as well. Maybe a couple across each side, and near the other corners.
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