Flexo printing is a direct flat or rotary printing process with elastic, raised printing formes or plates, which can be attached to plate or printing cylinders of different circumferences. Ink is applied with a rubber roller and/or an anilox roller with a doctor blade and relatively high viscosity water, solvent based or UV curable printing inks. The system was initially developed in the beginning of the 19th century to print wallpaper. By the end of the 19th century it was used for printing packaging paper and board. The name was chosen in 1952 and is derived from the earlier name aniline printing, relating to the early types of inks used.