LITHOGRAPHIC IMAGING AND PRINTING WITH POSITIVE-WORKING PHOTORESPONSIVE PRINTING MEMBERS

摘要

Imaging of positive-working, IR-sensitive printing plates that use a novolac resin as the major polymer component of the imaging layer takes place with greater post-exposure latitude. In various embodiments, the imaging layer includes one or more poly(vinyl phenol) polymers or copolymers combined with one or more vinyl phenol monomers.