PHOTOSENSITIVE ELEMENT, METHOD FOR FORMING RESIST PATTERN, AND METHOD FOR MANUFACTURING PRINTED WIRING BOARD

摘要

A photosensitive element having a support film and a photosensitive resin layer formed on the support film. The support film is a multilayer support film composed of at least three layers. The photosensitive resin layer is made of a photosensitive resin composition containing (A) a binder polymer, (B) photopolymerizable compound having at least one polymerizable ethylenic unsaturated group in a molecule, and (C) a photopolymerization initiator. A method for forming a resist pattern characterized in that such a photosensitive element is so placed on a circuit-forming board that the photosensitive resin layer is in contact with the circuit-forming board, an exposure area is formed by irradiating a predetermined portion of the photosensitive resin layer with activating light, and the portion other than the exposure area is removed and a method for manufacturing a printed wiring board characterized in that a circuit-forming board on which a resist pattern is formed by such a resist pattern forming method is etched or plated are also disclosed.