Patent ID: 6983689
Filing Date: 2006-01-10
Classification: B41F

Abstract:
1. A web-fed rotary printing press adapted for printing a web comprising: a first printing tower adapted to print a first side of a web; at least first and second satellite cylinders in said first printing tower and being rotatable in a first direction; a first group of at least six cylinders in said first printing tower and defining a first printing unit adapted to apply ink to a first side of said web, said first printing unit have a plurality of possible first print positions with said at least first and second satellite cylinders in said first printing tower, at least two of said possible first print positions being alternatingly actuatable for application, in a print-on position of each of said at least two of said possible first print positions, of the same colored ink to said first side of said web wherein, in a first operating mode, a first half of said first possible print positions in said first printing unit are in a print-on position and in a second operating mode a second half of said first possible print positions in said first printing unit are in a print-on position; a second printing tower adapted to print a second side of said web; at least third and fourth satellite cylinders in said second printing tower and being rotatable in a second direction opposite to said first direction; a second group of at least six cylinders in said second printing tower and defining a second printing unit adapted to apply ink to a second side of said web, said second printing unit having a plurality of possible second print positions with said at least third and fourth satellite cylinders in said second printing tower, at least two of said possible second print positions being alternatingly actuatable for application, in a print-on position of each of said at least two of said possible second print positions, of the same colored ink to said second side of said web; a first distance along a path of web travel through said first and second printing towers between a first one of said possible first print positions and a last one of said possible second print positions which are simultaneously in said print-on position; and a second distance of a length of said path of web travel through said first and second printing towers between a first one of said possible first print positions and a last of said possible second print positions assigned to the web, said first distance being greater than half said second distance.