Web shift compensation
AssigneeHewlett-Packard Development Company, L.P.
InventorsRonald R. Anderson, Joseph Santich
Life of this patent
Estimating the term…
Abstract
According to examples, an apparatus may include a first feed element and a second feed element, in which a web is to be fed to the first feed element and from the first feed element to the second feed element. The apparatus may also include a controller that may determine whether the web exiting the second feed element is shifted from an intended position and based on a determination that the web is shifted from the intended position, cause the first feed element to be moved laterally a first distance and the second feed element to be moved laterally a second distance to compensate for the shift in the web exiting the second feed element.
Claims16
An apparatus comprising:
- a first feed element to receive a web;
- a second feed element to receive the web from the first feed element;
- an actuator to simultaneously move the first feed and the second feed elements;
- and
- a controller to control the actuator to move the first feed element and the second feed element when the web exiting the second feed element is shifted from an intended position,
- wherein the controller is to control the actuator to move the first feed element a first distance and to move the second feed element a second distance different from the first distance to compensate for the shift in the web exiting the second feed element, and
- wherein the actuator is to move the first feed element at a first rate and the second feed element at a second rate different from the first rate, so that the first feed element reaches the first distance concurrently with the second feed element reaching the second distance.
A method comprising:
- receiving a web by a first feed element;
- receiving, by a second feed element, the web from the first feed element;
- simultaneously moving, by an actuator, the first and second feed elements;
- and
- controlling, by a controller, the actuator to move the first feed element and the second feed element when the web exiting the second feed element is shifted from an intended position, wherein the controller is to control the actuator to move the first feed element a first distance and to move the second feed element a second distance different from the first distance to compensate for the shift in the web exiting the second feed element, and
- wherein the actuator is to move the first feed element at a first rate and the second feed element at a second rate different from the first rate, so that the first feed element reaches the first distance concurrently with the second feed element reaching the second distance.
Dependencies are inferred from the claim text.