Patent ID: 7296717
Filing Date: 2007-11-20
Classification: B65H

Abstract:
1. A method of controlling a moving web in relation to a selected transverse position, the method comprising: positioning a first positioning guide proximate a second positioning guide; passing the web through the first positioning guide to reduce angular and transverse position errors; passing the web through the second positioning guide wherein the second positioning guide positions the moving web independently of the first positioning guide with a mechanism having zero-backlash; sensing a transverse location of the moving web at the second positioning guide with a sensor; transmitting the transverse location of the web at the second positioning guide to a controller; and manipulating a zero-backlash actuator with the controller wherein the zero-backlash actuator is coupled to the second positioning guide such that the transverse position of the web is controllable to within a preselected dimension of the selected transverse position.