Patent ID: 6897006
Filing Date: 2005-05-24
Classification: G03F

Abstract:
1. A multilayered photosensitive material for the preparation of a flexographic printing plate which comprises, as an integral layered body: (A) a substrate layer; (B) a layer of a photosensitive resinous composition having sensitivity to light excepting infrared light comprising (b1) an elastomeric binder resin, (b2) a polymerizable monomeric compound and (b3) a polymerization initiator, formed on the surface of the substrate layer (A); (C) a barrier layer of a composition comprising a resin which is an alkali-soluble cellulose compound, which transmits light other than infrared light and is removable in a development treatment, formed on the surface of the photosensitive resinous layer (B), said composition further comprising a plasticizer; and (D) a masking layer of a composition comprising (d1) a film-forming binder resin, (d2) an infrared absorbing compound and (d3) a compound having no transmissivity to light other than infrared light and capable of being removed by irradiation with an infrared laser beam, formed on the surface of the barrier layer (C).