The present invention provides an imageable element including a
lithographic substrate and an imageable layer disposed on the substrate.
The imageable layer includes a radically polymerizable component, an
initiator system capable of generating radicals sufficient to initiate a
polymerization reaction upon exposure to imaging radiation, and a
polymeric binder having a hydrophobic backbone and including both
constitutional units having a pendant cyano group attached directly to
the hydrophobic backbone, and constitutional units having a pendant group
including a hydrophilic poly(alkylene oxide) segment. When the imageable
element is imaged and developed, the resulting printing plate may exhibit
improved on-press solvent resistance and longer press life.