PURPOSE: To prevent the generation of static electricity and to prevent the inferiority such as the disconnection or breakage of the circuit of a printed wiring board by using a transparent conductive film as a support film.
CONSTITUTION: A support film 1 composed of a transparent conductive film is formed by laminating a transparent conductive film composed of ITO to the single surface of a polymer film 2 having flexibility such as a polyethylene terephthate film or a polyethylene naphthalate film. A photosensitive resin layer is laminated to the surface opposite to the transparent conductive film 3 of the support film 1. This support film 1 is prevented from static electrification by the transparent conductive film 3 and, therefore, when the support film 1 is drawn out of a taking-up roller in work laminating a dry film 5 to an insulating substrate, the support film generates no static electricity and is prevented from the adhesion of dust.
YOKOYAMA HIROYOSHI
NOGUCHI KOICHI
