Multilayered photosensitive material for flexographic...

Details Multilayered photosensitive material for flexographic... Multilayered photosensitive material for flexographic...

G - Physics

03

F

G03F 7/11 (2006.01) B41F 5/24 (2006.01) G03F 1/00 (2006.01)

Patent

CA 2347945

The invention discloses a multilayered photosensitive material for processing into a flexographic printing plate by direct patterning with an infrared laser beam. The multilayered material comprises: (A) a substrate; (B) a photosensitive resinous layer having sensitivity to light excepting infrared light and comprising (b1) an elastomeric binder resin, (b2) a polymerizable monomeric compound and (b3) a polymerization initiator formed on the substrate (A); (C) a barrier layer of a composition comprising a resin such as a polyvinyl pyrrolidone and alkali-soluble cellulose compounds, which transmits light other than infrared light and is removable in the development treatment, formed on the photosensitive resinous layer (B); 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 lights other than infrared light and removable by irradiation with an infrared laser beam, formed on the barrier layer (C).

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