FLEXOGRAPHIC PRINTER INCLUDING PRINTING UNITS WITH IMPROVED STABILITY

摘要

The invention relates to a flexographic printer including printing units with improved stability, containing a print drum (1) having several printing units (3) disposed therearound, each of said units consisting of a plate-holding roller (5) rotatably supported on moving supports (7) driven along the length of linear guide elements (9) by linear electric motors (11, 12). Control means are provided to control one or more control parameters for the pre-determined alteration of the conditions relating to the response offered by the linear motors (11, 12) to variations in the position of the plate-holding roller (5) during operation, with the plate-holding roller (5) being returned to the printing position, thereby preventing the system from vibrating at frequencies that can be in resonance.