| 主权项 |
1. A system for reducing tension fluctuations in a web when printing a print job on the web, comprising:
a printing system including a print station disposed opposite a first side of the web, the print station defining one or more print zones where the print station deposits a liquid onto the first side of the web, and one or more first rollers adapted to receive tension control commands, the printing system having a plurality of tension zones where tension on the web in one tension zone is controlled independently of the tension on the web in the other tension zones, wherein each tension zone has at least one first roller associated therewith, and wherein the tension control commands operate on the first rollers to control the amount of tension in the web in the printing system, the printing system being adapted to print a first copy of the print job; a sensor to measure tension changes on the web in the plurality of tension zones in the printing system during the printing of the first copy of the print job; and a processor responsive to the sensor to determine first tension control adjustments based on the measured tension changes and to use the first tension control adjustments to adjust the tension control commands to the one or more first rollers in the printing system to change the tension in the web when printing a second copy of the print job, thereby reducing tension fluctuations in the web. |
