Patent ID: 7981590
Filing Date: 2011-07-19
Classification: G03F

Abstract:
1. Method for producing a base material for screen printing, which comprises a screen, a resist layer comprising photosensitive material and a protective film, the method comprising the steps of: a) applying a first resist layer to one side of the protective film, b) drying the first resist layer, c) applying an additional resist layer to the first resist layer, and d) then applying a screen to the additional resist layer, the side of the additional resist layer to which the screen is applied being wet, and the screen being pressed into the additional resist layer under pressure from a pressure-exerting element wherein the pressure-exerting element is a roller which makes direct contact with the screen, using a counter-pressure roller opposite the roller and on the other side of the assembly made up of a screen, resist layer and protective film, whereby the roughness of the surface of the resist layer is expressed by Rz value which is measured in accordance with the DIN 4768 standard, whereby the surface of the resist layer, on the side on which protective film is present, is sufficiently smooth for the Rz value of the said surface to be lower than 15 micrometers,