Patent ID: 6546870
Filing Date: 2003-04-15
Classification: B41F

Abstract:
A method for controlling an ink quantity in different zones of an ink roller in a printing machine, which comprises:presetting first nominal values of the ink quantity for each zone in a time-dependent manner, each first nominal value of the ink quantity corresponding to a value of ink quantity flow released for the respective zone by an ink source; maintaining a constant ink quantity in the respective zone by releasing an ink quantity flow from the ink source corresponding to the first nominal value for a zone, upon the first nominal value for the zone remaining constant; changing the ink quantity in a given zone upon a nominal value for the given zone being changed from the first nominal value to a second nominal value, and performing the step of changing the ink quantity in the given zone by: determining a first correction ink quantity flow in accordance with a given rule dependent upon the first and the second nominal values; and during a transition interval, setting the ink quantity flow for the given zone to the sum of the first correction ink quantity flow and an ink quantity flow corresponding to the second nominal value; determining additional correction ink quantity flows for the zones situated adjacent the given zone; and during the transition interval, setting the ink quantity flow for each of the zones situated adjacent the given zone to the sum of the respective additional correction ink quantity flow and the ink quantity flow corresponding to the second nominal value of the respective zone of zones situated adjacent the given zone.