Process for the production of printing forms or photoresists...

Details Process for the production of printing forms or photoresists... Process for the production of printing forms or photoresists...

G - Physics

03

F

G03F 7/26 (2006.01) G03C 1/40 (2006.01) G03C 1/735 (2006.01) G03F 7/028 (2006.01) G03F 7/20 (2006.01) G03F 7/30 (2006.01)

Patent

CA 2041191

Abstract of the Disclosure A process for the production of printing forms or photoresists by imagewise irradiation of a photopolymerizable recording material is disclosed. The photopolymerizable recording material comprises a layer that contains a polymer binder, an ethylenically unsaturated compound that is polymerizable by free radicals and that contains at least one terminal ethylenic double bond, and a metallocene compound as photoinitiator. The material is heated after imagewise irradiation for a short time, exposed before, simultaneously with or after the imagewise irradiation for a short time to visible light having a wavelength of at least 400 nm without an original, and then developed. The process allows a substantial shortening of the image exposure or irradiation and is suitable in particular for the projection exposure or laser exposure of printing plates.

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