METHOD OF PHASING AND ACCELERATING CYLINDERS OF A PRINTING PRESS DURING AUTO TRANSFER

摘要

A method of preparing cylinders for printing on a web (11) during auto transfer operations is provided. The method includes the steps of printing images on a web (11) with at least one first printing cylinder (22, 26, 30, 34); accelerating at least one second printing cylinder (24, 28, 32, 36) so that the at least one second printing cylinder (24, 28, 32, 36) has a surface velocity that equals a velocity of the web (vw); adjusting a phasing of the at least one second printing cylinder (24, 28, 32, 36) with respect to the web (11) during the accelerating step and before the surface velocity of the at least one second printing cylinder (24, 28, 32, 36) equals the velocity of the web (11); moving the at least one first printing cylinder (22, 26, 30, 34) away from the web (11) and moving the at least one second printing cylinder (24, 28, 32, 36) towards the web (11); and printing images on the web (11) with the at least one second printing cylinder(24, 28, 32, 36). A printing press configured for auto transfer is also provided.