A printer comprising a printing roller supporting a matrix strip; a pressure roller for pressing the web on to the matrix at a first portion of the printing roller; and an inking unit including an inking roller contacting the matrix at a second portion of the printing roller; the cylindrical outer surface of the inking roller presenting microincisions, and being partially immersed in water-based ink inside a tank; and surplus ink being removed from the surface of the inking roller by a doctor blade prior to transfer on to the matrix.
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