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Most of us shuffle paper to introduce a bit of air between the sheets. This air lets the paper sheets shift some with respect to each other, and we can then get them "lined up" by grasping the stack of papers and tapping the stack on an edge. In commercial printing, a stack of paper is sometimes called a lift of paper, and the pressman will fan the lift of paper to line it up before loading it into the in-feed end of a press. The printer fans that lift of paper to get it to line up and them stacks it on the in-feed table.

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16y ago

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