A second print device prints images on a rear surface of a web with no sprockets after a first print device prints images on a front surface of the web. A CPF-OFF signal is generated at a time of when an irradiating unit of the second print device completes irradiating for a last page. The second print...http://www.google.com/patents/US6714758?utm_source=gb-gplus-sharePatent US6714758 - Printing system that positions web at accurate waiting position
