The principles and progress of printing machinery (1900)
Southward, John, 1840-1902, Wilson, Frederick John Farlow. Account of modern printed machine · London : E. Menken · leaf 134
ing the plates,those in the centre being used for impression. The paperpasses over and under the centre cylinders; the side of thepaper being thus reversed in the operation. In order thatno perceptible set-off may occur, a large surface-drum of thesame diameter as the second impression-cylinder…
Printing machinery and supplies
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