A printing technique, in which the ink is printed on the substrate from a printing plate with printing elements raised above spacing elements.

Since printing is carried out under high pressure (15 kg/cm2), the prints have the following characteristic features:

  • uneven ink distribution in the strokes: less in the middle than along the edges;
  • a rim formed by the ink along the edges of a stroke (“beaded edges”) (fig. 1, a);
  • substrate deformation (protuberance on the back side of the print (fig. 1, b); inward bulging on the front side of the print).

Letterpress printing is often used for printing serial numbers and bar-codes on the banknotes.

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