Photosensitive resin laminate

Abstract

A photosensitive resin laminate comprising at least a support, a photosensitive resin layer and an IR ablation layer, wherein the IR ablation layer comprises an IR absorbent metal layer which is disposed in contact with the photosensitive resin layer.

1 . A photosensitive resin laminate comprising at least a support, a photosensitive resin layer and an IR ablation layer, wherein the IR ablation layer comprises an IR absorbent metal layer which is disposed in contact with the photosensitive resin layer.  
   
   
       2 . The photosensitive resin laminate of  claim 1 , wherein the IR ablation layer comprises the IR absorbent metal layer and an organic polymer layer laminated on said metal layer.  
   
   
       3 . The photosensitive resin laminate of  claim 1 , wherein the IR ablation layer has a thickness of 70-20000 Å.  
   
   
       4 . The photosensitive resin laminate of  claim 1 , wherein the IR absorbent metal layer is an aluminized layer.  
   
   
       5 . The photosensitive resin laminate of  claim 2 , wherein the organic polymer layer laminated on the metal layer is a non-IR-sensitive polymer resin layer.  
   
   
       6 . The photosensitive resin laminate of  claim 2 , wherein the organic polymer layer laminated on the metal layer can receive an opaque non-transparent to actinic radiation.  
   
   
       7 . The photosensitive resin laminate of  claim 2 , wherein the organic polymer layer laminated on the metal layer contains a UV absorbent.  
   
   
       8 . The photosensitive resin laminate of  claim 1 , wherein the IR ablation layer has an optical density of not less than 2.0.  
   
   
       9 . The photosensitive resin laminate of  claim 1 , which shows a rate of change in the radius of a halftone dot after IR ablation of not more than ±30% per unit energy (J/cm 2 ).  
   
   
       10 . The photosensitive resin laminate of  claim 1 , which is a photosensitive plate.  
   
   
       11 . The photosensitive resin laminate of  claim 1 , which is a photosensitive flexo plate.  
   
   
       12 . The photosensitive resin laminate of  claim 11 , wherein wrinkles are not caused when a bending radius is not more than 5 cm.  
   
   
       13 . The photosensitive resin laminate of  claim 11 , wherein the IR ablation layer comprises the IR absorbent metal layer and an organic polymer layer laminated on said metal layer, said organic polymer layer being a non-IR-sensitive polymer resin layer and the non-IR-sensitive polymer resin layer comprising a water-soluble polymer and a plasticizer.  
   
   
       14 . The photosensitive resin laminate of  claim 1 , wherein the photosensitive resin laminate is a photosensitive letter press plate.  
   
   
       15 . The photosensitive resin laminate of  claim 14 , wherein the photosensitive resin layer comprises a composition comprising a polymer binder, an ethylenically unsaturated compound and a photoinitiator, the photosensitive resin laminate shows a rate of warp of within ±2% before exposure to actinic radiation, and a change in the warp after exposure to actinic radiation is not more than 15%.  
   
   
       16 . The photosensitive resin laminate of  claim 14 , wherein the photosensitive resin layer has a residual solvent content of 3-10%.  
   
   
       17 . A photosensitive resin laminate comprising at least a support, a photosensitive resin layer and an IR ablation layer, wherein the IR ablation layer comprises an IR absorbent metal layer and a UV absorbent organic polymer layer on at least one surface of the metal layer.