Patent ID: 7267756

Claim:
A mold for fine electroforming for manufacturing a fine metal product composed of a metal thin film and having a predetermined plane shape and a predetermined thickness by electroforming, comprising: a conductive substrate to function as a cathode during electroforming; and an insulation layer composed of an inorganic insulation material having a thickness of not less than 10 nm and less than one-half the thickness of the metal product, formed on a surface of the conductive substrate, wherein the insulation layer having an opening having a shape corresponding to the plane shape of the metal product and forming through to the surface of the conductive substrate, for manufacturing the metal product by making the metal thin film selectively grow by electroforming on the surface of the conductive substrate exposed at the opening, the conductive substrate formed of a SUS316 type stainless steel, a conductive layer having corrosion resistance and composed of a titanium thin film, the conductive layer formed at least on a surface exposed through the opening of the insulation layer in the conductive substrate, and the insulation layer formed of a two-layered structure having an intermediate layer composed of a silicon or silicon carbide thin film and a surface layer composed of a diamond-like carbon thin film.