COATING ROLLER AND SERVICE LIFE DETECTION METHOD FOR COATING ROLLER

To provide a coating roller that improves productivity, reduces costs, and sufficiently achieves fixing of a coating; and to provide service life detection means thereof.SOLUTION: A rotor on which a coating is coated has an area where an insertion member is inserted inside the rotor through the coating. Due to thermal contraction in a radial direction of the coating caused by heating after a length of the coating, in a width (axial) direction, is made to be longer than a rotor width on which the coating is coated and the coating is projected from the rotor, or due to contraction of the coating after the coating is made longer than the rotor width where the coating having stretchability at least in a radial direction, the rotor is coated, and the coating is projected from the rotor, the roller, which is formed such that an inner circumferential length of end part of the coating in the area projected from the rotor is the same as or shorter than an inner circumferential length no an inner diameter of the rotor, the coating in the projection portion is folded inside the rotor, the insertion member is inserted inside the rotor through the coating at least in press-fit conditions, and the coating is held on a surface of the rotor, and which integrates at least the rotor, the coating and the insertion member, is used.SELECTED DRAWING: Figure 1 【課題】 生産性改善、コスト低減を図り、被覆物の固定を十分に成す被覆ローラの提供及びその寿命検知手段の提供。【解決手段】被覆物が被覆される回転体は回転体の内側に被覆物を介して挿入部材が挿入される領域を有し、被覆物の長さが巾（軸）方向において被覆物が被覆される回転体巾より長くせしめ被覆物を回転体よりはみださせ加熱による被覆物の半径方向への熱収縮により、もしくは被覆物を少なくとも半径方向に伸縮性を有する被覆物を被覆される回転体巾より長くせしめ回転体に被覆し回転体よりはみ出させ被覆物の収縮により回転体からはみ出させた領域の被覆物の端部の内周長を回転体の内径の内周長と同じもしくは短く形成せしめ、はみ出し部の被覆物を回転体の内側に折り返し被覆物を介して挿入部材を回転体の内側に少なくとも圧入条件で挿入せしめ被覆物を回転体表面に保持し、少なくとも回転体、被覆物、挿入部材を一体化したローラを用いる。【選択図】 図１