Flexographic printing can be classified as a direct letterpress process. It is referred to as a direct process because the printing form transfers the ink directly to the substrate, e.g., to a film. In turn, letterpress means that the elements to be printed, e.g. letters, are higher on the printing form than the non-printing areas. In this process, flexographic printing works with two counter-rotating rollers that touch at exactly one point. The first roller (printing form cylinder) carries the printing form. The second roller (impression cylinder) guides the printing substrate. A third roller (anilox roller) transfers the ink to the printing form.
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