Lithographic printing plate with oleophilic area of radiation exposed adduct of diazo resin and sulfonated polymer

摘要

A light-sensitive adduct comprising the combination of a diazo resin having a plurality of pendant diazonium groups and a sulfonated polymer having a plurality of sulfonate groups and a presensitized light-sensitive article comprising a substrate having a light-sensitive coating which is comprised of the light-sensitive adduct on a surface thereof. After imagewise exposure, unexposed portions of the coating are removable by water or aqueous developers.