Process for the preparation of printing forms

Details Process for the preparation of printing forms Process for the preparation of printing forms

H - Electricity

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H05K 3/12 (2006.01) G03G 9/08 (2006.01) G03G 13/28 (2006.01) G03G 13/32 (2006.01)

Patent

CA 1046865

Abstract of the Disclosure This invention relates to an improvement in the process for the preparation of printing forms or metallic etchings from electro- photographic or electrographic reproduction materials composed of a support with a photoconductive or high-ohmic layer thereon, by charging and image-wise exposure, or by image-wise charging, development of the electrostatic image with a finely-divided toner, fixing, and removal of the layer in the image-free areas by means of a decoating solution, the improvement comprising developing the electrostatic image with a developer which renders the image areas hydrophobic at room temperature, and simultaneously effects develop- ment and resistance to the decoating solution.

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