Mosaic printer

A mosaic printer which comprises a printing head mounted for movement along a first rectilinear line proximate to an associated printing sheet to produce a plurality of signs arrayed in a second rectilinear line parallel to said first rectilinear line, said printing head being provided with a number of printing wires, each of said wires including means which upon preselected axial travel produce a printing mark on the associated printing sheet, a plurality of said marks producing said signs said wires extending from a first part of said printing head in the vicinity of the associated printing sheet substantially along a third rectilinear line, said third rectilinear line and said second rectilinear line having an included angle, at least said first part of said printing head being rotatable about an axis which is substantially perpendicular to the associated printing sheet, and a setting mechanism to position said first part of said printing head to at least two discrete angular positions, in which said third rectilinear line is disposed at different included angles with respect to said first and second rectilinear lines for producing signs with different heights and inclination by said setting mechanism before printing any individual sign and without change of said elements, said included angles being less than 100 degrees and said included angle not varying during the printing of any one sign.