| 摘要 |
A digital printing device performs dynamic printing of a substrate web in line with static printing in a reel-fed printing press. A position sensor, together with a digital printing head, is relocated on a cross member transversely to the transport direction of the respective substrate web and serves for measuring the respective substrate web for regulating a print position for the dynamic printing. A position sensor control generates a synchronisation signal for the device dependent on a cylinder trigger signal and on measurement values of the position sensor out of the cylinder trigger signal and provides a digital printing head control. A speed signal transformer generates a feed signal dependent on a speed signal and a predetermined dynamic print resolution out of the speed signal, making it available to the digital printing head control which activates the digital printing head dependent on the synchronisation signal and on the feed signal. |
