Patent ID: 8026045

Claim:
A method of manufacturing a wiring circuit board, comprising: forming a predetermined conductor circuit pattern on a base material; forming a photosensitive resin composition layer on a surface of the base material on which the conductor circuit pattern is formed by using a photosensitive resin composition containing a cyclic phosphazene compound; irradiating a surface of the photosensitive resin composition layer with active light rays through a photomask having a predetermined pattern, thereby exposing the surface of the photosensitive resin composition layer to the active light rays; forming a solder resist layer having a predetermined pattern by using a developing solution after the exposure step; then irradiating the solder resist layer with ultraviolet light at a dose of 200 to 3000 mJ/cm 2 by using a low-pressure mercury-vapor lamp thereby suppressing the separating of the cyclic phosphazene compound; and then subjecting the solder resist layer to irradiation with ultraviolet light by the use of a high-pressure mercury-vapor lamp.