Patent ID: 8351835

Claim:
A tube, which is a hollow tube made of metal, having a uniform wall thickness of 20 to 50 μm and being obtained by plastic working through spinning, in which a metallic ring-shaped metal original body is rotated about the center axis thereof together with a rotation support body, while being pressed by a top or tops disposed on the outer periphery of said metal original body, wherein fine irregularities are formed on the outer peripheral face and the inner peripheral face of said metal tube at a substantially constant interval, wherein said irregularities are made of dimension difference between peaks and valleys on the outer peripheral face and the inner peripheral face, the dimension difference being about 1 μm, wherein said irregularities are formed in a pattern of multiple spirals in the center axis direction of said metal tube, wherein said tube is a tube for a fixing roller or for a belt used in an electrophotographic printer or a copier, wherein said fine irregularities of said inner peripheral face have a lubricant-holding capability.