Patent ID: 8539883
Filing Date: 2013-09-24
Classification: B41F

Abstract:
1. A method for controlling a register in a rotary printing press ( 18 ) by a register control device ( 17 ), wherein the printing press ( 18 ) includes at least two printing units (DWn-1 to DWn+2), each of which includes at least one cylinder ( 13 ) supporting a printing image to be transmitted and at least one cylinder ( 14 ) pressing a print fabric ( 16 ) against the other cylinder, and the control device ( 17 ) comprising at least a measuring unit ( 2 , 6 ) and a measuring head ( 1 , 5 ), a register control unit ( 3 . 7 ), a trigger unit ( 4 , 8 ) and a drive unit ( 9 , 10 ), wherein components ( 2 , 6 ; 1 , 5 ; 3 , 7 ; 4 , 8 ; 9 , 10 ) of the control device ( 17 ) are mutually connected through a real-time bus system ( 12 ) in which all bus members of the real-time bus system ( 12 ) are chronologically synchronized with each other, the method comprising the steps of: a. for each trigger unit and/or measuring unit and/or register control unit, a reference time signal is generated and transmitted via the bus system ( b. a time interval limited by at least 2 reference time signals issued chronologically in succession is further divided by the trigger unit by issuing at least one time signal located between the reference dates, c. the trigger unit selects one signal from the signal sequence generated in the preceding step for triggering a measuring step to be performed by the measuring head. d. the measuring head detects a printed pattern which is part of the printed printout, and e. in the measuring unit, position information concerning the printout respectively transmitted by the printing unit is determined based on the pattern scanned by the measuring head, f. in the register control unit, correction values are calculated based on the position information determined by one or more measuring unit(s), and g. the correction values are transmitted to the drive units for operation thereof.