Any device—typically mechanical, but not necessarily—that transfers an inked image, or—more often—many copies of an inked image to a surface. There are a wide variety of printing presses, generally categorized by the half dozen or so major printing process, but with many different variations on a basic theme. See Letterpress, Offset Lithography, Gravure, Flexography, and Screen Printing. Printing presses are also categorized according to whether they are webfed (print on continuous rolls of substrate) or sheetfed (print on single sheets, fed into the press in a variety of ways).
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