Patent ID: 8722309

Claim:
An infrared sensitive photosensitive composition, comprising a composition which comprises by percentage weight: 30-70% of a water soluble thermal cross-linking resin; 1-20% of a water soluble photo cross-linking or polymeric resin; 10-50% of a photopolymerizable oligomer; 1-30% of a multifunctional monomer; 1-20% of a cationic photopolymerization initiator; and 1-20% of an infrared irradiation absorption dye; wherein said water soluble thermal cross-linking resin is urethanized and unsaturated vinyl multi-component co-polymer A having a chemical structure of: where R1 and R2 are hydrogen or methyl, R3 is CH 2 ═C(CH 3 )COOCH 2 CH 2 NCO-group, R4 is amide group, polyethoxylated ether group or pyrrolidone; m, n, o, p is number of mole of co-polymer unit; a proportion of m is 40˜70%, a proportion of n is 10˜30%, a proportion of o is 10˜30%, and a proportion of p is 10˜30%.