Patent ID: 6037085
Filing Date: 2000-03-14
Classification: B41C,C07C,G03F

Abstract:
A printing plate substrate comprising a metal substrate having a layer thereon of a positive image producing formulation for use with computer exposed laser light pulses that emit light in the infrared region of the spectrum and deliver from about 100 to 400 mJ/cm.sup.2 of light in a light pulse period and that is developable using a developer solvent to remove a portion of the light exposed photopolymer of the layer, the unexposed portion of the layer remaining on the substrate comprisinga) a film forming polymeric resin;b) an organo azide compound, andc) an infrared absorbing dye, which has been exposed to infrared laser light pulses and treated by a developer solvent to form a pattern of exposed and unexposed regions on the plate.