Patent ID: 8197647

Claim:
A method of forming a hard laminated film comprising a layer A and a layer B of specific compositions deposited alternately, wherein the crystal structure of layer A differs from the crystal structure of layer B, the thickness of layer A per layer is two or more times that of layer B per layer, the thickness of layer B per layer is 0.5 nm or more, and the thickness of layer A per layer is 200 nm or less, wherein an arc vaporization source and a sputter vaporization source are simultaneously operated in a film-forming atmosphere comprising a reactive gas using a film-forming device comprising one or more of each of an arc vaporization source and sputter vaporization source also having a magnetic field applying function in the same vacuum container so that the components of said layer A are vaporized by the arc vaporization source and the components of said layer B are vaporized by the sputter vaporization source, respectively, and a substrate is moved relative to said vaporization sources so that said layer A and said layer B are deposited alternately on the substrate.