Process for the preparation of screen printing stencils by...

Details Process for the preparation of screen printing stencils by... Process for the preparation of screen printing stencils by...

G - Physics

03

F

204/12

G03F 7/12 (2006.01) C25D 7/00 (2006.01)

Patent

CA 1175385

Hoe 80/K 013 Abstract of the Disclosure This invention relates to an improvement in the process for the preparation of screen printing stencils by an electroplating meth- od, which comprises coating a metallic matrix, provided in the manner of a screen with dots of insulating material, with a photo- resist layer, exposing the photoresist layer imagewise and develop- ing it by washing out, and rendering those areas of the photoresist layer which have remained in place electrically conductive in the course of imaging, electrodepositing metal up to a desired height on the conductive image stencil and on the matrix ridges surrounding the insulating screen dots, and removing the patterned screen print- ing stencil thus obtained from the matrix, the improvement which comprises rendering the photoresist layer conductive only on its surface and before developing. Hoe 80/K 013

373645

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