| 主权项 |
1. A system for using tension control adjustments on a web to reduce registration errors 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 determine a plurality of registration errors produced 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 plurality of registration errors 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 registration errors. |
