BASE MATERIAL FOR FIXING BELT, FIXING BELT, FIXING DEVICE, AND IMAGE FORMING APPARATUS

PROBLEM TO BE SOLVED: To provide a base material for a fixing belt that is excellent in bending resistance, a fixing belt, a fixing device, and an image forming apparatus.SOLUTION: There is provided a base material 71 for a fixing belt that comprises a laminate 71A having a lamination of a plurality of metal layers and has flexibility, wherein the laminate 71A includes a nickel layer 71b that is formed of nickel, a copper layer 71c that is laminated on the nickel layer 71b and includes an alloy of copper and tin, and a protective layer 71d that is laminated on a surface of the copper layer 71c on the opposite side of a surface laminated on the nickel layer 71b and formed of nickel.SELECTED DRAWING: Figure 4 【課題】耐折れ曲がり性に優れた定着ベルト用基材、定着ベルト、定着装置及び画像形成装置を提供する。【解決手段】複数の金属層を積層してなる積層体７１Ａを備え、可撓性を有する定着ベルト用基材７１であって、積層体７１Ａが、ニッケルにより構成されたニッケル層７１ｂと、ニッケル層７１ｂに積層された銅と錫の合金を含む銅層７１ｃと、ニッケル層７１ｂが積層された面と反対側の銅層７１ｃの面に積層された、ニッケルにより構成された保護層７１ｄと、を含む。【選択図】図４