Machine and method for multi-pass digital printing on glass sheets with minimised print travel

Multi-pass printing machine for plate glass with minimization of print travel of the kind that comprises a fixed structure to hold the glass by means of automatic positioning for the positioning and bracing of a sheet of glass during the printing, means of expelling the sheet of glass, and means of transporting the glass when no printing is happening, a print bridge disposed perpendicularly to the direction in which the plate advances wherein the print bridge can move in the X direction, a print carriage supported and configured to move along said bridge (Y direction) wherein the print carriage is configured with heads orientated to print during the bridge's movement along the X direction, and a central print processing and control unit, wherein:

• said print carriage comprises a main support with at least one print module oriented in the X direction, perpendicular to said Y direction, wherein said print module is fed by a colored ink, and said print module comprises at least one print head;
• said machine also comprises two motors, each motor including a high-precision micrometric encoder, said motors configured to control the movement of said bridge in the X direction;
• and a central unit configured to simultaneously order the movement of the bridge in the X direction, and the printing by said print heads.