| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the problem wherein dynamic errors are not corrected by alignment of print heads to account for thermal expansion and contraction of the print heads. <P>SOLUTION: A printing system includes: a first roll; a second roll; a first print head; a second print head positioned adjacent to a process path and axially spaced from the first print head along an in-track axis of the process path; and a processor identifying a first roll error (R<SB>e</SB>) associated with the first roll, identifying a second R<SB>e</SB>associated with the second roll, characterizing the cross-process movement of a web moving along the in-track axis of the process path by calculating the cross-process web motion from a first roll error and a second roll error, controlling the cross-process position of the first print head on the basis of the calculated cross-process web motion, and also controlling the cross-process position of the second print head on the basis of the calculated cross-process web motion. <P>COPYRIGHT: (C)2010,JPO&INPIT |
