| 摘要 |
<p>The invention includes preparing a carrier web with uniformly spaced images and corresponding registration marks at regular intervals, applying an energy curable resiÏcoating to the carrier web either uniformly or in selected spots, providing a master webcarrying uniformly spaced impressing images and corresponding registration marks at regular intervals where accurate alignment of the registration marks of the carrier web and the master web is achieved by stretching the master web to align the registration marks. The invention comprises an apparatus including sensors which sense the location of the registration marks on the webs; a computer programmed to monitor error signals representing the deviation in the alignment of the web registration marks and determines the amount of stretching to be applied to the master web in order to bring the registration marks into alignment; and means for achieving appropriate stretching of the master web to produce the desired alignment.</p> |
