Patent ID: 8578850
Filing Date: 2013-11-12
Classification: B41F,B41P

Abstract:
1. A printing machine having at least one inking unit, the printing machine comprising: at least two cylinders which are set against each other during printing operation, to be rotated with the aid of at least one drive; sensors by way of which the rotational movement of the cylinders may be recorded; at least one actuator, by way of which the at least two cylinders can be set against each other in their radial directions; and a control unit which sets a throwing-on position of the at least two cylinders by inducing a different circumferential speed between the at least two cylinders, setting the at least two cylinders against each other by way of the at least one actuator, and recording or maintaining the relative position of the at least two cylinders with respect to each other in response to at least one parameter of the rotational movement of the at least two cylinders exceeding a limiting value; wherein the control unit operates the at least one drive in a field weakening mode during the setting of the throwing-on position, at least one of the at least two cylinders has an asynchronous motor as the at least one drive, and at least one of the at least two cylinders has at least one elevation on its circumferential face.