Patent ID: 9329485
Filing Date: 2016-05-03
CPC Classification: B41C,G03F

Claim Text:
1. A method for preparing a lithographic printing plate, the method comprising: (a) imagewise exposing a negative-working lithographic printing plate precursor comprising a substrate having disposed thereon a negative-working radiation-sensitive imageable layer, and optionally, a hydrophilic overcoat disposed on the negative-working radiation-sensitive imageable layer, to provide an exposed precursor comprising exposed regions and non-exposed regions in the negative-working radiation-sensitive imageable layer; (b) optionally heating the exposed precursor to a temperature of at least 60° C. and up to and including 180° C.; (c) optionally washing the exposed precursor to remove the hydrophilic overcoat; (d) treating the exposed precursor with one or more successive applications of a processing solution to provide an exposed and processed precursor, the processing solution having a pH of at least 7 and up to and including 11 and comprising: (e) optionally, drying the exposed and processed precursor; and (f) mounting the exposed and processed precursor on a printing press, with the proviso that the exposed precursor is not further treated with any liquid between (d) and (f), and wherein: component (2) comprises at least 20 ethylene oxide or propylene oxide units.