Method and apparatus for printing a web

摘要

In a method and an apparatus for printing on material in web form print images are successively applied to the web by a transfer cylinder. The web is continuously drawn into the printing station and the speed at which the web is moved in the printing station during a printing operation is greater than the speed at which it is drawn into the printing station. After the printing operation the web is positioned in the printing station for the following printing operation relative to the transfer cylinder which is not in contact with the web during a part of a revolution of 360°, and at the same time the path of the web is altered in accordance with the change in the speed thereof. The web is driven by the impression cylinder which is associated with the transfer cylinder and around the peripheral surface of which the web partially passes. Positioning of the web for the respectively following printing operation is implemented by a change in the rotary movement of the impression cylinder.