Patent ID: 8481248

Claim:
A method for fabricating a resin-made micromachine component having an internal structure and a circumferential edge portion having a shape, and having a shroud having a shape, characterized in that the method comprises the steps of: (a) forming a sacrifice layer on a substrate, said sacrifice layer being made of a material which can be dissolved and removed by a medium which dissolves neither of said substrate nor the micromachine component on said substrate; (b) forming in layers negative photosensitive resin composition layers on said sacrifice layer, and subjecting each of said formed photosensitive resin composition layers to exposure with ultraviolet light using a first photomask corresponding to said internal structure and said shape of said circumferential edge portion, repeating said step of forming in layers negative photosensitive resin composition layers and said step of subjecting each of said formed photosensitive resin composition layers to exposure with ultraviolet light at least two times, and removing unexposed portions from the formed photosensitive resin composition layers comprising at least two layers of cured exposed portions, thereby forming a multilayer structure of the cured photosensitive resin composition layers; (c) laminating a first dry film resist made of a negative photosensitive resin composition on said multilayer structure of the cured photosensitive resin composition layers, and exposing with ultraviolet radiation said first dry film resist layer using a second photomask corresponding to said shape of said shroud, and removing unexposed portions of said first dry film resist to form a cured layer of said first dry film resist layer; and (d) separating said micromachine component having said multilayer structure of said cured photosensitive resin composition layers and said cured first dry film resist layer from said substrate by removing said sacrifice layer.