Offset printing is a printing technique where an inked image is transferred (or “offset”) from a plate to a blanket, then to the paper. The lithographic process is based on the repulsion of oil and water; the image to be printed obtains ink from ink rollers, while the non-printing area attracts a water-based film (“fountain solution”), keeping the non-printing areas ink-free. In very basic terms:   A printing plate (with a positive…

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