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Metallic mirror, metallic rotary polygonal mirror, and process for their production

Image Number 8 for United States Patent #6916101.

A metallic mirror comprising a substrate made of aluminum or an aluminum alloy, and superposingly provided thereon, in order, an intermediate TiO.sub.2 layer and a metallic reflective in layer. The metallic mirror may be a metallic mirror which further comprises a protective layer including at least an Al.sub.2 O.sub.3 layer formed by vacuum deposition on the metallic reflective layer. Also disclosed is a process for producing a metallic mirror, comprising the steps of forming the intermediate layer by vacuum deposition on a metallic polygonal mirror substrate metal, forming the metallic reflective Cu layer by vacuum deposition on the intermediate layer, and forming the protective layer by vacuum deposition on the metallic reflective layer.

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