Patent ID: 7060409

Claim:
An imageable element comprising a layer of an imageable composition over a support; in which the imageable composition comprises: about 0.1 wt % to about 20% wt % of an infrared absorbing compound, about 1 wt % to about 50 wt % of an acid generator, about 5 wt % to about 70 wt % of an acid activatable crosslinking agent, about 20 wt % to about 85 wt % of a polymeric binder, and about 0.01 wt % to about 1 wt % of an added onium compound; and in which: the added onium compound is different from the acid generator; and the added onium compound is a quaternary ammonium, odonium, sulphonium, phosphonium, oxysulphoxonium, oxysulphonium, sulphoxonium, ammonium, diazonium, selenonium, or arsonium compound.