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A printing method in which an image is created as a patterned polymer (plastic) coating applied to a flexible plastic or metal plate.

Lithographic printing works by having two plates: one positive, with a smooth texture which embraces oil-based inks, and one negative, with a rough texture that absorbs water and repels the oil. The image is then transferred to the printing material using rubber rollers.

Most books and magazines are printed using offset lithography.

Compared to digital printing, litho is generally more expensive to set up but more efficient once it’s up and running.